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Title: INDIVIDUAL DIFFERENCES IN REPRODUCTIVE MEMORY.
Creator: WHITEHURST, ROBERT EUGENE, Florida Atlantic University
Abstract/Description: Individual differences were obtained in a task requiring the reproduction of familiar and unfamiliar dot patterns. These individual differences were related to Hock's (1973) distinction between Ss emphasizing analytic vs. structural processes. For some Ss (structural), reproductive performance was facilitated by past experience, presumably because these Ss acquired a structural organizational scheme of knowledge. For the other Ss (analytic), reproductive performance was retarded by past...
Show moreIndividual differences were obtained in a task requiring the reproduction of familiar and unfamiliar dot patterns. These individual differences were related to Hock's (1973) distinction between Ss emphasizing analytic vs. structural processes. For some Ss (structural), reproductive performance was facilitated by past experience, presumably because these Ss acquired a structural organizational scheme of knowledge. For the other Ss (analytic), reproductive performance was retarded by past experience, presumably because these Ss acquired a knowledge of "distinctive" features.
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Date Issued: 1975
PURL: http://purl.flvc.org/fcla/dt/13748
Subject Headings: Reproduction (Psychology), Visual perception, Recognition (Psychology)
Format: Document (PDF)

Title: Peripheral Object Recognition in Naturalistic Scenes.
Creator: Schlangen, Derrick, Barenholtz, Elan, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Psychology
Abstract/Description: Most of the human visual field falls in the periphery, and peripheral processing is important for normal visual functioning. Yet, little is known about peripheral object recognition in naturalistic scenes and factors that modulate this ability. We propose that a critical function of scene and object memory is in order to facilitate visual object recognition in the periphery. In the first experiment, participants identified objects in scenes across different levels of familiarity and...
Show moreMost of the human visual field falls in the periphery, and peripheral processing is important for normal visual functioning. Yet, little is known about peripheral object recognition in naturalistic scenes and factors that modulate this ability. We propose that a critical function of scene and object memory is in order to facilitate visual object recognition in the periphery. In the first experiment, participants identified objects in scenes across different levels of familiarity and contextual information within the scene. We found that familiarity with a scene resulted in a significant increase in the distance that objects were recognized. Furthermore, we found that a semantically consistent scene improved the distance that object recognition is possible, supporting the notion that contextual facilitation is possible in the periphery. In the second experiment, the preview duration of a scene was varied in order to examine how a scene representation is built and how memory of that scene and the objects within it contributes to object recognition in the periphery. We found that the closer participants fixated to the object in the preview, the farther on average they recognized that target object in the periphery. However, only a preview duration of the scenes for 5000 ms produced significantly farther peripheral object recognition compared to not previewing the scene. Overall, these experiments introduce a novel research paradigm for object recognition in naturalistic scenes, and demonstrates multiple factors that have systematic effects on peripheral object recognition.
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Date Issued: 2016
PURL: http://purl.flvc.org/fau/fd/FA00004669, http://purl.flvc.org/fau/fd/FA00004669
Subject Headings: Context effects (Psychology), Human information processing, Optical pattern recognition, Pattern recognition systems, Recognition (Psychology), Visual perception
Format: Document (PDF)

Title: Self-relevant familiarity effects on object recognition: effects of context, location and object's size.
Creator: Daskagianni, Evangelie., Charles E. Schmidt College of Science, Department of Psychology
Abstract/Description: Recent research in visual object recognition has shown that context can facilitate object recognition. This study assessed the effect of self-relevant familiarity of context in object recognition. Participants performed a task in which they had to recognize degraded objects shown under varying levels of contextual information. The level of degradation at which they could successfully recognize the target object was used as a measure of performance. There were five contextual conditions: (1)...
Show moreRecent research in visual object recognition has shown that context can facilitate object recognition. This study assessed the effect of self-relevant familiarity of context in object recognition. Participants performed a task in which they had to recognize degraded objects shown under varying levels of contextual information. The level of degradation at which they could successfully recognize the target object was used as a measure of performance. There were five contextual conditions: (1) no context, (2) context, (3) context and size, (4) context and location, (5) context, size and location. Within each contextual condition, we compared the performance of "Expert" participants who viewed objects in the context of their own house and "Novice" participants who viewed those particular settings for the first time. Ratings were performed to assess each object's consistency, frequency, position consistency, typicality and shape distinctiveness. Object's size was the only contextual info rmation that did not affect performance. Contextual information significantly reduced the amount of bottom-up visual information needed for object identification for both experts and novices. An interaction (Contextual Information x Level of Familiarity) was observed. Expert participants' performance improved significantly more than novice participants' performance by the presence of contextual information. Location information affected the performance of expert participants, only when objects that occupied stable positions were considered. Both expert and novice participants performed better with objects that rated high in typicality and shape distinctiveness. Object's consistency, frequency and position consistency did not seem to affect expert participants' performance but did affect novice participants' performance., A regression analysis model that included Level of Familiarity, Contextual Information Level, Shape and Typical performance. Our results are in accordance with the priming model of visual object recognition. We concluded that a self-relevant context has its own consistency rules and that it affects visual object recognition by narrowing down the number of expectations and the search space significantly more than a non-self-relevant context does. Keywords: visual object recognition, self-relevant familiarity, location, size, probability.
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Date Issued: 2011
PURL: http://purl.flvc.org/FAU/3332183
Subject Headings: Optical pattern recognition, Context effects (Psychology), Visual perception, Categorization (Psychology), Recognition (Psychology), Whole and parts (Psycholog)
Format: Document (PDF)

Title: THE INTERRELATIONSHIP OF SPECIFIC AND PROTOTYPE MEMORY: A DEVELOPMENTAL STUDY.
Creator: HAFER, MARY FLANAGAN, Florida Atlantic University
Abstract/Description: A stimulus class was generated by applying a fixed set of transformational rules to a prototype, and selected members of this class were presented during acquisition. It was found that children discriminated members of this class from nonmembers. For adults, further distinctions were obtained among the stimuli within the class, as follows: Although the prototype was not presented during acquisition, it was recognized with greater confidence than stimuli from the acquisition set. Furthermore,...
Show moreA stimulus class was generated by applying a fixed set of transformational rules to a prototype, and selected members of this class were presented during acquisition. It was found that children discriminated members of this class from nonmembers. For adults, further distinctions were obtained among the stimuli within the class, as follows: Although the prototype was not presented during acquisition, it was recognized with greater confidence than stimuli from the acquisition set. Furthermore, class members that were not seen during acquisition were recognized on the basis of this prototype. For those class members that had been seen during acquisition, however, there was no evidence that their recognition was based on the prototype. Evidence that these previously seen class members were recognized with greater confidence than new class members indicated that recognition of stimuli from the acquisition set was based on stored copies, or specific memory.
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Date Issued: 1973
PURL: http://purl.flvc.org/fcla/dt/13575
Subject Headings: Recognition (Psychology), Memory in children, Memory
Format: Document (PDF)

Title: RECOGNITION VS COGNITIVE EVALUATION: THE LATE POSITIVE COMPONENT OF THE VISUAL AVERAGE EVOKED POTENTIAL DURING NUMERICAL PROBLEM-SOLVING.
Creator: WRIGHT, PEGGY, Florida Atlantic University
Abstract/Description: Visual average evoked potentials (AEPs) were recorded from four male Ss in a sequential, single digit problem solving task requiring addition of the first digit to the second. Separate AEPs for the first and second digits allowed Late Positive Component comparisons. It was hypothesized that LPC latency variations are a function of cognitive evaluation of information, with the prediction that there would be a normal latency LPC in the first digit AEP, where S recognizes a stimulus, as compared...
Show moreVisual average evoked potentials (AEPs) were recorded from four male Ss in a sequential, single digit problem solving task requiring addition of the first digit to the second. Separate AEPs for the first and second digits allowed Late Positive Component comparisons. It was hypothesized that LPC latency variations are a function of cognitive evaluation of information, with the prediction that there would be a normal latency LPC in the first digit AEP, where S recognizes a stimulus, as compared to a delayed LPC in the second digit AEP where S must both recognize and cognitively evaluate information to solve the addition problem. Two experimental conditions, varying stimulus presentation time between long and short, were run. Equipment failure terminated the experiment and the proposed study could not be researched. The pilot data gathered were too variable and incomplete to permit conclusions. However, these data did not contradict the hypothesis.
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Date Issued: 1972
PURL: http://purl.flvc.org/fcla/dt/13522
Subject Headings: Recognition (Psychology), Cognition, Visual evoked response
Format: Document (PDF)

Title: RECOGNITION MEMORY FOR SEMANTIC AND SYNTACTIC ASPECTS OF SENTENCES: A DEVELOPMENTAL STUDY.
Creator: ERSOFF, JEFFREY ALAN., Florida Atlantic University
Abstract/Description: A probe recognition task tested memory for syntactic (active/passive arid word order) changes and for semantic (meaningful and anomalous) changes. On the basis of McNeill's theory of semantic development the following predictions were made: (a) with a minimal retention interval (almost immediate) 8-year-olds would recognize semantic changes better than syntactic changes, while 6-year-olds would not perform differently on the two types of changes, (b) with a longer retention interval, 8-year...
Show moreA probe recognition task tested memory for syntactic (active/passive arid word order) changes and for semantic (meaningful and anomalous) changes. On the basis of McNeill's theory of semantic development the following predictions were made: (a) with a minimal retention interval (almost immediate) 8-year-olds would recognize semantic changes better than syntactic changes, while 6-year-olds would not perform differently on the two types of changes, (b) with a longer retention interval, 8-year-olds would recognize semantic changes better than syntactic changes. Results supported (b) but in (a) the 8-year-olds recognized syntactic changes better. This finding was discussed in terms of task differences and a new experimental approach was proposed.
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Date Issued: 1973
PURL: http://purl.flvc.org/fcla/dt/13598
Subject Headings: Memory in children, Recognition (Psychology), Psycholinguistics
Format: Document (PDF)

Title: ALTERNATIVE SPATIAL FRAMES OF REFERENCE IN THE RECOGNITION OF NOVEL FORMS.
Creator: SULLIVAN, MARY., Florida Atlantic University
Abstract/Description: The effects of retinal and objective orientation on recognition of novel stimuli were examined in a two-phase experiment. In Phase 1 novel stimuli were presented to tilted subjects placed in either an intentional learning condition (they were instructed to remember the stimuli) or an incidental learning condition (they received no instruction regarding memory). In Phase 2 the same stimuli were randomly mixed with distractor stimuli in a recognition test. Stimuli were presented to upright...
Show moreThe effects of retinal and objective orientation on recognition of novel stimuli were examined in a two-phase experiment. In Phase 1 novel stimuli were presented to tilted subjects placed in either an intentional learning condition (they were instructed to remember the stimuli) or an incidental learning condition (they received no instruction regarding memory). In Phase 2 the same stimuli were randomly mixed with distractor stimuli in a recognition test. Stimuli were presented to upright subjects in either their objectively upright orientation (the same orientation relative to gravity as in Phase 1) or their retinally upright orientation (the same orientation relative to subjects' tilted retinas as in Phase 1). The instructions produced no effect on recognition. Evidence that both retinal and objective orientation influenced recognition was obtained in both conditions. Alternative interpretations hypothesized that: (1) dual memory representations of Phase 1 stimuli, referenced to both retinal and objective upright, were formed and (2) a single memory representation of Phase 1 stimuli, referenced to an axis intermediate to retinal and objective upright, was formed.
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Date Issued: 1979
PURL: http://purl.flvc.org/fcla/dt/13990
Subject Headings: Recognition (Psychology), Orientation--Testing, Learning, Psychology of
Format: Document (PDF)

Title: THE SPATIAL FRAMEWORK OF FORM PERCEPTION: INDIVIDUAL DIFFERENCES WITH RESPECT TO PHENOMENAL AND RETINAL DETERMINATION OF SPATIAL REFERENCE.
Creator: GOLD, LEON SAMUEL, Florida Atlantic University
Abstract/Description: Rock's procedure for separating the effect of objective and retinal spatial reference by varying stimulus orientation and body posture was used in conjunction with the "same-different" reaction time paradigm. It was predicted that the individual differences in perceptual processing (analytic and structural) obtained by Hock (1973) would involve different determinants of spatial reference, these being retinal reference for analytic processing and objective reference for structural processing....
Show moreRock's procedure for separating the effect of objective and retinal spatial reference by varying stimulus orientation and body posture was used in conjunction with the "same-different" reaction time paradigm. It was predicted that the individual differences in perceptual processing (analytic and structural) obtained by Hock (1973) would involve different determinants of spatial reference, these being retinal reference for analytic processing and objective reference for structural processing. The results show that analytic subjects as hypothesized, referenced perceptual information to a retinal coordinate system. Structural subjects however, seemed to reference perceptual information to both objective and retinal coordinates. The results for structural subjects were attributed to the unexpected finding that subjects who were structural while upright, became analytic when in a reclining position. The latter finding suggested that Rock's methodology for separating the effects of retinal and objective orientation relies on the subjects employing the same mode of processing in all bodily postures.
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Date Issued: 1974
PURL: http://purl.flvc.org/fcla/dt/13649
Subject Headings: Form perception, Orientation (Psychology), Recognition (Psychology), Visual perception
Format: Document (PDF)

Title: The Happiness/Anger Superiority Effect: the influence of the gender of perceiver and poser in facial expression recognition.
Creator: Peaco, Sophia., Charles E. Schmidt College of Science, Department of Psychology
Abstract/Description: Two experiments were conducted to investigate the impact of poser and perceiver gender on the Happiness/Anger Superiority effect and the Female Advantage in facial expression recognition. Happy, neutral, and angry facial expressions were presented on male and female faces under Continuous Flash Suppression (CFS). Participants of both genders indicated when the presented faces broke through the suppression. In the second experiment, angry and happy expressions were reduced to 50% intensity. At...
Show moreTwo experiments were conducted to investigate the impact of poser and perceiver gender on the Happiness/Anger Superiority effect and the Female Advantage in facial expression recognition. Happy, neutral, and angry facial expressions were presented on male and female faces under Continuous Flash Suppression (CFS). Participants of both genders indicated when the presented faces broke through the suppression. In the second experiment, angry and happy expressions were reduced to 50% intensity. At full intensity, there was no difference in the reaction time for female neutral and angry faces, but male faces showed a difference in detection between all expressions. Across experiments, male faces were detected later than female faces for all facial expressions. Happiness was generally detected faster than anger, except when on female faces at 50% intensity. No main effect for perceiver gender emerged. It was concluded that happiness is superior to anger in CFS, and that poser gender affects facial expression recognition.
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Date Issued: 2013
PURL: http://purl.flvc.org/fcla/dt/3360964
Subject Headings: Face perception, Human face recognition, Facial expression, Physiological aspects, Biometric identification, Recollection (Psychology), Recognition (Psychology)
Format: Document (PDF)

Title: How the Spatial Organization of Objects Affects Perceptual Processing of a Scene.
Creator: Rashford, Stacey, Barenholtz, Elan, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Psychology
Abstract/Description: How does spatial organization of objects affect the perceptual processing of a scene? Surprisingly, little research has explored this topic. A few studies have reported that, when simple, homogenous stimuli (e.g., dots), are presented in a regular formation, they are judged to be more numerous than when presented in a random configuration (Ginsburg, 1976; 1978). However, these results may not apply to real-world objects. In the current study, fewer objects were believed to be on organized...
Show moreHow does spatial organization of objects affect the perceptual processing of a scene? Surprisingly, little research has explored this topic. A few studies have reported that, when simple, homogenous stimuli (e.g., dots), are presented in a regular formation, they are judged to be more numerous than when presented in a random configuration (Ginsburg, 1976; 1978). However, these results may not apply to real-world objects. In the current study, fewer objects were believed to be on organized desks than their disorganized equivalents. Objects that are organized may be more likely to become integrated, due to classic Gestalt principles. Consequently, visual search may be more difficult. Such object integration may diminish saliency, making objects less apparent and more difficult to find. This could explain why, in the present study, objects on disorganized desks were found faster.
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Date Issued: 2015
PURL: http://purl.flvc.org/fau/fd/FA00004537, http://purl.flvc.org/fau/fd/FA00004537
Subject Headings: Image analysis, Optical pattern recognition, Pattern recognition systems, Phenomenological psychology, Visual perception
Format: Document (PDF)

Title: The role of location information in identifying degraded objects.
Creator: Schlangen, Derrick, Charles E. Schmidt College of Science, Department of Psychology
Abstract/Description: Across three experiments, we assessed how location and color information contributes to the identification of an object whose image has been degraded, making its identity ambiguous. In Experiment 1, some of the target objects had fixed locations within the scene. We found that subjects used this location information during search and later to identify the blurred target objects. In Experiment 2, we tested whether location and color information can be combined to identify degraded objects, and...
Show moreAcross three experiments, we assessed how location and color information contributes to the identification of an object whose image has been degraded, making its identity ambiguous. In Experiment 1, some of the target objects had fixed locations within the scene. We found that subjects used this location information during search and later to identify the blurred target objects. In Experiment 2, we tested whether location and color information can be combined to identify degraded objects, and results were inconclusive. In Experiment 3, both the location and color of each object was variable but statistically predictive of the object's identity. We found that subjects used both sources of information-color and location - equally when identifying the blurred image of the object. Overall, these findings suggest that location information may be as determining as intrinsic feature information to identify objects when the objects' intrinsic features are degraded.
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Date Issued: 2013
PURL: http://purl.flvc.org/fcla/dt/3361059
Subject Headings: Recognition (Psychology), Context effects (Psychology), Visual perception, Imagery (Psychology), Implicit learning
Format: Document (PDF)

Title: Large-Scale Cortical Functional Connectivity Underlying Visuospatial Attention.
Creator: Meehan, Timothy Patrick, Bressler, Steven L., Florida Atlantic University, Charles E. Schmidt College of Science, Center for Complex Systems and Brain Sciences
Abstract/Description: The endogenous, or voluntary, control of visuospatial attention relies upon interactions within a frontoparietal dorsal attention network (DAN) and this network’s top-down influence on visual occipital cortex (VOC). While these interactions have been shown to occur during attention tasks, they are also known to occur to some extent at rest, but the degree to which task-related interactions reflect either modulation or reorganization of such ongoing intrinsic interactions is poorly understood....
Show moreThe endogenous, or voluntary, control of visuospatial attention relies upon interactions within a frontoparietal dorsal attention network (DAN) and this network’s top-down influence on visual occipital cortex (VOC). While these interactions have been shown to occur during attention tasks, they are also known to occur to some extent at rest, but the degree to which task-related interactions reflect either modulation or reorganization of such ongoing intrinsic interactions is poorly understood. In addition, it is known that in spatial neglect—a syndrome following unilateral brain lesions in which patients fail to attend to the contralesional side of space—symptom severity covaries with disruptions to intrinsic interhemispheric interactions between left and right homologous regions of the DAN; however, similar covariance with disruptions to intrahemispheric interactions within the DAN, and between the DAN and VOC, has not been demonstrated. These issues are addressed herein via the measurement of both undirected and directed functional connectivity (UFC, DFC) within the DAN and between the DAN and VOC. UFC and DFC were derived from correlations of, and multivariate vector autoregressive modeling of, fMRI BOLD time-series, respectively. Time-series were recorded from individuals performing an anticipatory visuospatial attention task and individuals at rest, as well as from stroke patients either with or without neglect and age-matched healthy controls. With regard to the first issue, the results show that relative to rest, top-down DAN-to-VOC influence and within-DAN coupling are elevated during task performance, but also that intrinsic connectivity patterns are largely preserved during the task. With regard to the second issue, results show that interhemispheric imbalances of intrahemispheric UFC and DFC both within the DAN and between the DAN and VOC strongly correlate with neglect severity, and may co-occur with functional decoupling of the hemispheres. This work thus demonstrates that the intrinsic functional integrity of the DAN and its relationship to VOC is crucial for the endogenous control of visuospatial attention during tasks, and that the compromise of this integrity due to stroke likely plays a role in producing spatial neglect.
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Date Issued: 2016
PURL: http://purl.flvc.org/fau/fd/FA00004613
Subject Headings: Cognitive neuroscience., Sensorimotor integration., Space perception., Selectivity (Psychology), Recognition (Psychology), Brain mapping.
Format: Document (PDF)

Title: Effects of Age on Children's Binding of Actors With Actions.
Creator: Spirgel, Arie, Kersten, Alan, Florida Atlantic University
Abstract/Description: In the current experiment, a group of 10-year-olds and a group of young adults watched a series of short video clips of different women performing different actions. One week later, participants were tested on their ability to discriminate the old videos from distracter videos, which included new actor/old action videos, new action/old actor videos, novel combinations of familiar actors and actions, as well as entirely new videos. The results provide evidence that the ability to accurately...
Show moreIn the current experiment, a group of 10-year-olds and a group of young adults watched a series of short video clips of different women performing different actions. One week later, participants were tested on their ability to discriminate the old videos from distracter videos, which included new actor/old action videos, new action/old actor videos, novel combinations of familiar actors and actions, as well as entirely new videos. The results provide evidence that the ability to accurately bind actors with their actions reaches adult levels by age 10. The results are discussed in terms of the brain areas involved in memory binding tasks, as well as implications for various areas of study within forensic psychology, particularly unconscious transference.
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Date Issued: 2007
PURL: http://purl.flvc.org/fau/fd/FA00000836
Subject Headings: Transference (Psychology), Cognition--Age factors, Memory--Age factors, Recognition (Psychology)
Format: Document (PDF)

Title: "I distinctly remember you!": an investigation of memory for faces with unusual features.
Creator: Keif, Autumn., Charles E. Schmidt College of Science, Department of Psychology
Abstract/Description: Many errors in recognition are made because various features of a stimulus are attended inefficiently. Those features are not bound together and can then be confused with other information. One of the most common types of these errors is conjunction errors. These happen when mismatched features of memories are combined to form a composite memory. This study tests how likely conjunction errors, along with other recognition errors, occur when participants watch videos of people both with and...
Show moreMany errors in recognition are made because various features of a stimulus are attended inefficiently. Those features are not bound together and can then be confused with other information. One of the most common types of these errors is conjunction errors. These happen when mismatched features of memories are combined to form a composite memory. This study tests how likely conjunction errors, along with other recognition errors, occur when participants watch videos of people both with and without unusual facial features performing actions after a week time lag. It was hypothesized that participants would falsely recognize actresses in the conjunction item condition over the other conditions. The likelihood of falsely recognizing a new person increased when presented with a feature, but the conjunction items overall were most often falsely recognized.
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Date Issued: 2012
PURL: http://purl.flvc.org/FAU/3342207
Subject Headings: Face perception, Human face recognition, Facial expression, Physiological aspects, Recollection (Psychology)
Format: Document (PDF)

Title: The neural correlates of endogenously cued covert visuospatial attentional shifting in the cue-target interval: an electroencephalographic study.
Creator: Modestino, Edward Justin., Charles E. Schmidt College of Science, Center for Complex Systems and Brain Sciences
Abstract/Description: This study investigated electroencephalographic differences related to cue (central left- or right-directed arrows) in a covert endogenous visual spatial attention task patterned after that of Hopf and Mangun (2000). This was done with the intent of defining the timing of components in relation to cognitive processes within the cue-target interval. Multiple techniques were employed to do this. Event-related potentials (ERPs) were examined using Independent Component Analysis. This revealed a...
Show moreThis study investigated electroencephalographic differences related to cue (central left- or right-directed arrows) in a covert endogenous visual spatial attention task patterned after that of Hopf and Mangun (2000). This was done with the intent of defining the timing of components in relation to cognitive processes within the cue-target interval. Multiple techniques were employed to do this. Event-related potentials (ERPs) were examined using Independent Component Analysis. This revealed a significant N1, between 100:200 ms post-cue, greater contralateral to the cue. Difference wave ERPs, left minus right cue-locked data, divulged significant early directing attention negativity (EDAN) at 200:400 ms post-cue in the right posterior which reversed polarity in the left posterior. Temporal spectral evolution (TSE) analysis of the alpha band revealed three stages, (1) high bilateral alpha precue to 120 ms post-cue, (2) an event related desynchronization (ERD) from approximately 120 ms: 500 ms post-cue, and (3) an event related synchronization (ERS) rebound, 500: 900 ms post-cue, where alpha amplitude, a measure of activity, was highest contralateral to the ignored hemifield and lower contralateral to the attended hemifield. Using a combination of all of these components and scientific literature in this field, it is possible to plot out the time course of the cognitive events and their neural correlates.
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Date Issued: 2009
PURL: http://purl.flvc.org/FAU/369199
Subject Headings: Brain mapping, Neural networks (Neurobiology), Cognitive neuroscience, Recognition (Psychology), Cognition, Research, Methodology
Format: Document (PDF)

Title: Reduced representation of neural networks.
Creator: Stefanescu, Roxana A., Charles E. Schmidt College of Science, Department of Physics
Abstract/Description: Experimental and computational investigations addressing how various neural functions are achieved in the brain converged in recent years to a unified idea that the neural activity underlying most of the cognitive functions is distributed over large scale networks comprising various cortical and subcortical areas. Modeling approaches represent these areas and their connections using diverse models of neurocomputational units engaged in graph-like or neural field-like structures. Regardless of...
Show moreExperimental and computational investigations addressing how various neural functions are achieved in the brain converged in recent years to a unified idea that the neural activity underlying most of the cognitive functions is distributed over large scale networks comprising various cortical and subcortical areas. Modeling approaches represent these areas and their connections using diverse models of neurocomputational units engaged in graph-like or neural field-like structures. Regardless of the manner of network implementation, simulations of large scale networks have encountered significant difficulties mainly due to the time delay introduced by the long range connections. To decrease the computational effort, it is common to assume severe approximations to simplify the descriptions of the neural dynamics associated with the system's units. In this dissertation we propose an alternative framework allowing the prevention of such strong assumptions while efficiently representing th e dynamics of a complex neural network. First, we consider the dynamics of small scale networks of globally coupled non-identical excitatory and inhibitory neurons, which could realistically instantiate a neurocomputational unit. We identify the most significant dynamical features the neural population exhibits in different parametric configuration, including multi-cluster dynamics, multi-scale synchronization and oscillator death. Then, using mode decomposition techniques, we construct analytically low dimensional representations of the network dynamics and show that these reduced systems capture the dynamical features of the entire neural population. The cases of linear and synaptic coupling are discussed in detail. In chapter 5, we extend this approach for spatially extended neural networks., We consider the dynamical behavior of a neural field-like network, which incorporates many biologically realistic characteristics such as heterogeneous local and global connectivity as well as dispersion in the neural membrane excitability. We show that in this case as well, we can construct a reduced representation, which may capture well the dynamical features of the full system. The method outlined in this dissertation provides a consistent way to represent complex dynamical features of various neural networks in a computationally efficient manner.
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Date Issued: 2009
PURL: http://purl.flvc.org/FAU/369387
Subject Headings: Molecular neurobiology, Neural networks (Neurobiology), Brain, Mathematical models, Cognitive neuroscience, Recognition (Psychology)
Format: Document (PDF)

Title: Eye Fixations of the Face Are Modulated by Perception of a Bidirectional Social Interaction.
Creator: Kleiman, Michael J., Barenholtz, Elan, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Psychology
Abstract/Description: Eye fixations of the face are normally directed towards either the eyes or the mouth, however the proportions of gaze to either of these regions are dependent on context. Previous studies of gaze behavior demonstrate a tendency to stare into a target’s eyes, however no studies investigate the differences between when participants believe they are engaging in a live interaction compared to knowingly watching a pre-recorded video, a distinction that may contribute to studies of memory encoding....
Show moreEye fixations of the face are normally directed towards either the eyes or the mouth, however the proportions of gaze to either of these regions are dependent on context. Previous studies of gaze behavior demonstrate a tendency to stare into a target’s eyes, however no studies investigate the differences between when participants believe they are engaging in a live interaction compared to knowingly watching a pre-recorded video, a distinction that may contribute to studies of memory encoding. This study examined differences in fixation behavior for when participants falsely believed they were engaging in a real-time interaction over the internet (“Real-time stimulus”) compared to when they knew they were watching a pre-recorded video (“Pre-recorded stimulus”). Results indicated that participants fixated significantly longer towards the eyes for the pre-recorded stimulus than for the real-time stimulus, suggesting that previous studies which utilize pre-recorded videos may lack ecological validity.
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Date Issued: 2016
PURL: http://purl.flvc.org/fau/fd/FA00004701, http://purl.flvc.org/fau/fd/FA00004701
Subject Headings: Eye -- Movements, Eye tracking, Gaze -- Psychological aspects, Nonverbal communication, Optical pattern recognition, Perceptual motor processes, Visual perception
Format: Document (PDF)

Title: Facial Expression Computer Interaction System for Children with Asperger's Syndrome.
Creator: Amador, Francisco Javier, Huang, Shihong, Florida Atlantic University
Abstract/Description: People with Autism Spectrum Disorders, particularly Asperger's Syndrome, have a set of symptoms, such as difficulty processing emotive facial expressions and making less eye contact, that affect the individual's social interactions. The prototype developed is geared to help children with Asperger's Syndrome recognize facial expressions, improve eye contact, and to reinforce connections between facial and verbal components of expressions. This application utilizes a computer generated human...
Show morePeople with Autism Spectrum Disorders, particularly Asperger's Syndrome, have a set of symptoms, such as difficulty processing emotive facial expressions and making less eye contact, that affect the individual's social interactions. The prototype developed is geared to help children with Asperger's Syndrome recognize facial expressions, improve eye contact, and to reinforce connections between facial and verbal components of expressions. This application utilizes a computer generated human head, an avatar, to interact with the children while displaying various emotions and using games to increase the children's eye contact. The unique properties of the avatar utilized allow for a comprehensive coverage of the children's attention spectrum to maximize their learning potential. Knowing that about 17% of Autism Spectrum Disorders belong to the Asperger's Syndrome subclass, the positive impact of this application on their life would be of great importance for their families and the community.
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Date Issued: 2010
PURL: http://purl.flvc.org/fau/fd/FA00012503
Subject Headings: Autism spectrum disorders--Treatment--Technological innovations, Optical pattern recognition, Interpersonal communication in children, Emotions in children, Exceptional children--Psychology, Social skills in children
Format: Document (PDF)

Title: An interactive system to enhance social and verbal communication skills of children withautism spectrum disorders.
Creator: Minan, Maria Jose, Huang, Shihong, Florida Atlantic University, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: Affecting one in every 68 children, Autism Spectrum Disorder (ASD) is one of the fastest growing developmental disabilities. Scientific research has proven that early behavioral intervention can improve learning, communication, and social skills. Similarly, studies have shown that the usage of of-the-shelf technology boosts motivation in children diagnosed with ASD while increasing their attention span and ability to interact socially. Embracing perspectives from different fields of study can...
Show moreAffecting one in every 68 children, Autism Spectrum Disorder (ASD) is one of the fastest growing developmental disabilities. Scientific research has proven that early behavioral intervention can improve learning, communication, and social skills. Similarly, studies have shown that the usage of of-the-shelf technology boosts motivation in children diagnosed with ASD while increasing their attention span and ability to interact socially. Embracing perspectives from different fields of study can lead to the development of an effective tool to complement traditional treatment of those with ASD. This thesis documents the re-engineering, extension, and evolu- tion of Ying, an existing web application designed to aid in the learning of autistic children. The original methodology of Ying combines expertise from other research areas including developmental psychology, semantic learning, and computer science. In this work, Ying is modifed to incorporate aspects of traditional treatment, such as Applied Behavior Analysis. Using cutting-edge software technology in areas like voice recognition and mobile device applications, this project aspires to use software engineering approaches and audio-visual interaction with the learner to enhance social behavior and reinforce verbal communication skills in children with ASD, while detecting and storing learning patterns for later study.
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Date Issued: 2014
PURL: http://purl.flvc.org/fau/fd/FA00004306, http://purl.flvc.org/fau/fd/FA00004306
Subject Headings: Autism spectrum disorders in children -- Treatment -- Technological innovations, Children with autism spectrum disorders -- Education -- Technological innovations, Communication disorders in children -- Treatment -- Technological innovations, Computers and people with disabilities, Learning, Psychology of, Optical pattern recognition
Format: Document (PDF)

Recognition (Psychology) (14)	+ -
Visual perception (7)	+ -
Optical pattern recognition (6)	+ -
Context effects (Psychology) (3)	+ -
Cognition (2)	+ -

Cognitive neuroscience (2)	+ -
Face perception (2)	+ -
Facial expression (2)	+ -
Human face recognition (2)	+ -
Learning, Psychology of (2)	+ -
Memory in children (2)	+ -
Neural networks (Neurobiology) (2)	+ -
Pattern recognition systems (2)	+ -
Physiological aspects (2)	+ -
Recollection (Psychology) (2)	+ -
Autism spectrum disorders in children -- Treatment -- Technological innovations (1)	+ -
Autism spectrum disorders--Treatment--Technological innovations (1)	+ -
Biometric identification (1)	+ -
Brain (1)	+ -
Brain mapping (1)	+ -
Brain mapping. (1)	+ -
Categorization (Psychology) (1)	+ -
Children with autism spectrum disorders -- Education -- Technological innovations (1)	+ -
Cognition--Age factors (1)	+ -
Cognitive neuroscience. (1)	+ -
Communication disorders in children -- Treatment -- Technological innovations (1)	+ -
Computers and people with disabilities (1)	+ -
Emotions in children (1)	+ -
Exceptional children--Psychology (1)	+ -
Eye -- Movements (1)	+ -

Florida Atlantic University (13)	+ -
Charles E. Schmidt College of Science (10)	+ -
Department of Psychology (7)	+ -
Barenholtz, Elan (3)	+ -
Center for Complex Systems and Brain Sciences (2)	+ -

Huang, Shihong (2)	+ -
Schlangen, Derrick (2)	+ -
Amador, Francisco Javier (1)	+ -
Bressler, Steven L. (1)	+ -
College of Engineering and Computer Science (1)	+ -
Daskagianni, Evangelie. (1)	+ -
Department of Computer and Electrical Engineering and Computer Science (1)	+ -
Department of Physics (1)	+ -
ERSOFF, JEFFREY ALAN. (1)	+ -
GOLD, LEON SAMUEL (1)	+ -
HAFER, MARY FLANAGAN (1)	+ -
Keif, Autumn. (1)	+ -
Kersten, Alan (1)	+ -
Kleiman, Michael J. (1)	+ -
Meehan, Timothy Patrick (1)	+ -
Minan, Maria Jose (1)	+ -
Modestino, Edward Justin. (1)	+ -
Peaco, Sophia. (1)	+ -
Rashford, Stacey (1)	+ -
SULLIVAN, MARY. (1)	+ -
Spirgel, Arie (1)	+ -
Stefanescu, Roxana A. (1)	+ -
WHITEHURST, ROBERT EUGENE (1)	+ -
WRIGHT, PEGGY (1)	+ -

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