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Title: AN EXAMINATION OF CONTEXT EFFECTS IN VISUAL PERCEPTION.
Creator: GORDON, GREGORY PETER, Florida Atlantic University
Abstract/Description: A "same-different" reaction time paradigm was used to investigate the influence of context on the perception of multiple object scenes consisting of "real-world" objects. The relationships among these objects were manipulated to compose four different contextual arrangements. This enabled an investigation of three aspects of context: familiarity, physical plausibility, and belongingness. Differences in reaction time between the four levels of context were significant for both same and...
Show moreA "same-different" reaction time paradigm was used to investigate the influence of context on the perception of multiple object scenes consisting of "real-world" objects. The relationships among these objects were manipulated to compose four different contextual arrangements. This enabled an investigation of three aspects of context: familiarity, physical plausibility, and belongingness. Differences in reaction time between the four levels of context were significant for both same and different responses. Furthermore, a correlational analysis indicated individual differences in the use of contextual effects. Those subjects who were most influenced by whether or not the objects belonged together, were least influenced by the disruption of the rules of physical plausibility, and vice versa. Correlational analyses concerned with the relationship between individual differences in context effects and emphasis on structural versus analytic processing (Hock, 1973) were insignificant, though in the predicted direction.
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Date Issued: 1973
PURL: http://purl.flvc.org/fcla/dt/13558
Subject Headings: Visual perception
Format: Document (PDF)

Title: THE PERCEPTION OF DISTANCE AND ANGLE RELATIONS FOR SIMPLE DOT PATTERNS.
Creator: O'ROURKE, GERALD., Florida Atlantic University
Abstract/Description: This research was concerned with the perception of inter-element distance and angle relations for pairs of dots arranged vertically, horizontally, oblique-left, and oblique-right. For each trial, a pair of dots was presented in different global locations, for five consecutive frames. The subject's task was to detect a change in the relative location of the dots, which could occur during one of the five frames. Each subject participated in three different conditions. One condition emphasized...
Show moreThis research was concerned with the perception of inter-element distance and angle relations for pairs of dots arranged vertically, horizontally, oblique-left, and oblique-right. For each trial, a pair of dots was presented in different global locations, for five consecutive frames. The subject's task was to detect a change in the relative location of the dots, which could occur during one of the five frames. Each subject participated in three different conditions. One condition emphasized the detection of changes in distance between the elements; the second emphasized the detection of changes in the angle formed by the elements. The third condition did not focus attention on either distance or angle changes. Results indicated that focussing attention on either distance or angle changes affected sensitivity to distance changes for rectilinear, but not for oblique arrangements. These results suggested that the vertical and horizontal components of Inter-element distance are perceptually fundamental, and that the Euclidean distance between two elements and the angle formed by the elements are internally computed from the perceptually fundamental distance components.
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Date Issued: 1986
PURL: http://purl.flvc.org/fcla/dt/14288
Subject Headings: Visual perception
Format: Document (PDF)

Title: CONTEMPORARY ARCHEOLOGICAL VISUALIZATION: ANCIENT PALIKÉ IN THE DIGITAL AGE.
Creator: Babcock, Catherine J., Bargsten, Joey, Florida Atlantic University, School of Communication and Multimedia Studies, Dorothy F. Schmidt College of Arts and Letters
Abstract/Description: Exploring the intersection of archeological and artistic visualization and the impact of digital technologies on these disciplines, the author details an endeavor to communicate the essence of the sanctuary of Paliké in Catania, Sicily through digital reconstruction and animation. Emulating the creative process of the famous panoramic artist Yadegar Assisi, and drawing upon first-hand observation and research of the archeological site Rocchicella di Mineo, the author recounts the artistic...
Show moreExploring the intersection of archeological and artistic visualization and the impact of digital technologies on these disciplines, the author details an endeavor to communicate the essence of the sanctuary of Paliké in Catania, Sicily through digital reconstruction and animation. Emulating the creative process of the famous panoramic artist Yadegar Assisi, and drawing upon first-hand observation and research of the archeological site Rocchicella di Mineo, the author recounts the artistic journey of creating impactful archeological visualizations which, although driven by rapidly evolving technology, can remain relevant. This manuscript chronicles the process and describes the production methods used to convey the essence of the ancient city of Paliké both accurately and expressively.
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Date Issued: 2023
PURL: http://purl.flvc.org/fau/fd/FA00014169
Subject Headings: Archaeology, Visualization
Format: Document (PDF)

Title: Potential stimulus contributions to counterchange determined motion perception.
Creator: Park, Cynthia Louise Smith, Hock, Howard S., Barenholtz, Elan, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Psychology
Abstract/Description: Prior research has explored the counterchange model of motion detection in terms of counterchanging information that originates in the stimulus foreground (or objects). These experiments explore counterchange apparent motion with regard to a new apparent motion stimulus where the necessary counterchanging information required for apparent motion is provided by altering the luminance of the background. It was found that apparent motion produced by background-counterchange requires longer frame...
Show morePrior research has explored the counterchange model of motion detection in terms of counterchanging information that originates in the stimulus foreground (or objects). These experiments explore counterchange apparent motion with regard to a new apparent motion stimulus where the necessary counterchanging information required for apparent motion is provided by altering the luminance of the background. It was found that apparent motion produced by background-counterchange requires longer frame durations and lower levels of average stimulus contrast compared to foreground-counterchange. Furthermore, inter-object distance does not influence apparent motion produced by background-counterchange to the degree it influences apparent motion produced by foreground-counterchange.
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Date Issued: 2014
PURL: http://purl.flvc.org/fau/fd/FA00004313
Subject Headings: Motion perception (Vision), Perceptual motor processes, Visual analysis, Visual discrimination, Visual pathways, Visual perception
Format: Document (PDF)

Title: Reimagining Climate Change: Visualizing the Future of Sustainability.
Creator: Dowis, Kaitlin, Afanador-Llach, Camila, Florida Atlantic University, Department of Visual Arts and Art History, Dorothy F. Schmidt College of Arts and Letters
Abstract/Description: The world’s path to climate change is inevitable. Activists and legislators, all around the world, are actively working to slow down this process or stop changes. Technology is moving toward a sustainable future of renewable energy and resources to lighten the impact that the human population has on the climate. Whether or not these efforts will slow down the changing climate is unknown, but the world’s scientists, engineers, and designers are preparing for any scenario that comes our way....
Show moreThe world’s path to climate change is inevitable. Activists and legislators, all around the world, are actively working to slow down this process or stop changes. Technology is moving toward a sustainable future of renewable energy and resources to lighten the impact that the human population has on the climate. Whether or not these efforts will slow down the changing climate is unknown, but the world’s scientists, engineers, and designers are preparing for any scenario that comes our way. This thesis uses graphic design to visualize the future of humanity adapting to climate change. Topics that are explored include controlled-environment agriculture, vertical farming, sustainable food production, advancements in the medical industry, advancements in transportation, and sustainable energy production. These elements will come together, in my projects, to visualize one possible future of living in Arizona, where living conditions have become inhospitable for life as we know today.
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Date Issued: 2020
PURL: http://purl.flvc.org/fau/fd/FA00013557
Subject Headings: Climate Change, Sustainability, Visualization
Format: Document (PDF)

Title: Settling of fine particles.
Creator: Kim, Hung Soo., Florida Atlantic University, Scarlatos, Panagiotis (Pete) D., College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
Abstract/Description: This study pertaining to the settling of fine particles is developed using various models and formulas. The model considers two layers, i.e, the suspension zone dominated by perikinetic flocculation and the settling zone governed by gravitational force. In the suspension zone, floc formation of fine particles is simulated by the maximum chain model in which floc parameters and fractal dimension are compared with existing data. In addition, fractal dimension is compared with that of the...
Show moreThis study pertaining to the settling of fine particles is developed using various models and formulas. The model considers two layers, i.e, the suspension zone dominated by perikinetic flocculation and the settling zone governed by gravitational force. In the suspension zone, floc formation of fine particles is simulated by the maximum chain model in which floc parameters and fractal dimension are compared with existing data. In addition, fractal dimension is compared with that of the hierarchical model. The main assumption of the model is that any floc having sixteen particles outweighs Brownian force, and thus the floc starts falling down into the settling zone. The flocs moving from the suspension zone are considered as nonspherical particles in the settling zone. The study uses a dimensionless settling velocity, omega*, for estimation of the sedimentation of flocs. Settling causes aggregation of the depositing flocs. The form of these aggregates is analyzed by the fractal relationship P ~ L delta.
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Date Issued: 1992
PURL: http://purl.flvc.org/fcla/dt/14872
Subject Headings: Fluid dynamics, Flow visualization
Format: Document (PDF)

Title: TWO DIMENSIONAL FLOW WITHIN A TRIANGULAR OSCILLATING CRACK (TURBULENCE, VORTEX STREET, TRANSITION FLOW, MIXING).
Creator: KIM, SOO YONG., Florida Atlantic University, Tennant, Jeffrey S., College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
Abstract/Description: The transition of two dimensional flow within a crack with oscillating wall is studied experimentally to establish the role of the parameters involved. Multiple instabilities in the fluid are produced by the motion of the oscillating wall. For a better understanding of the flow structure and displaying in the whole flow field at a time, flow visualization was used. Frequency, amplitude, and crack width were systematically varied. The present study shows that, in general, the frequency and...
Show moreThe transition of two dimensional flow within a crack with oscillating wall is studied experimentally to establish the role of the parameters involved. Multiple instabilities in the fluid are produced by the motion of the oscillating wall. For a better understanding of the flow structure and displaying in the whole flow field at a time, flow visualization was used. Frequency, amplitude, and crack width were systematically varied. The present study shows that, in general, the frequency and crack width play a role in the transition process at low frequencies of oscillations. However, amplitude becomes progressively important at its higher range. Results also show that the flow changes its character approximately after a Reynolds number 11420. After that the transition process continues until the Reynolds number 34322 which is the upper limit of variation of frequency (Reynolds number) in the present study.
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Date Issued: 1986
PURL: http://purl.flvc.org/fcla/dt/14312
Subject Headings: Fluid dynamics, Flow visualization
Format: Document (PDF)

Title: Visions and voices: A community materializes its past.
Creator: Stein, Nancy Carol., Florida Atlantic University, Harris, Michael S.
Abstract/Description: The cultural construction of the past and the role it plays in the present have contributed to our understanding of our history and our culture. Expression and definition of cultural identity are important factors in this discussion and can depend on who is in control of the image and what drives their interest. In order to examine these issues, I explore the roles of authority, voice, and empowerment. I look at cultural representation as portrayed by the African American community of Delray...
Show moreThe cultural construction of the past and the role it plays in the present have contributed to our understanding of our history and our culture. Expression and definition of cultural identity are important factors in this discussion and can depend on who is in control of the image and what drives their interest. In order to examine these issues, I explore the roles of authority, voice, and empowerment. I look at cultural representation as portrayed by the African American community of Delray Beach Florida through an oral history project and self-representation through exhibits and public performances. I have documented the processes involved as the community gains control over the conceptualization of its past and creates an identify in the present. This example shows how anthropology can play a role that broadens the message of complex histories by the inclusion of personal experiences.
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Date Issued: 2002
PURL: http://purl.flvc.org/fcla/dt/12888
Subject Headings: Visual anthropology, Oral history
Format: Document (PDF)

Title: THE DETERMINANTS OF GROUPING DURING BINOCULAR RIVALRY.
Creator: Yoon, Yosun, Hong, Sang Wook, Florida Atlantic University, Department of Psychology, Charles E. Schmidt College of Science
Abstract/Description: Interocular grouping during binocular rivalry occurs when two images concurrently presented to two eyes are combined as a coherent pattern as if perceptual experience follows Gestalt grouping principles. The present study investigated what determines rivalry dynamics (perceptual experience of monocular stimuli and interocular grouping) by examining individual differences. Specifically, the effect of eye-of-origin and pattern coherence on percepts during rivalry were individually assessed...
Show moreInterocular grouping during binocular rivalry occurs when two images concurrently presented to two eyes are combined as a coherent pattern as if perceptual experience follows Gestalt grouping principles. The present study investigated what determines rivalry dynamics (perceptual experience of monocular stimuli and interocular grouping) by examining individual differences. Specifically, the effect of eye-of-origin and pattern coherence on percepts during rivalry were individually assessed using pairs of stimuli that induce either monocularly-driven (monocular coherence condition) or interocularly-driven (interocular coherence condition) coherent percepts. We found that the degree of perceiving complete, coherent stimuli was consistent within individuals regardless of conditions, indicating that individual differences in experiencing interocular grouping were explained by pattern coherence, rather than eye-of-origin information. In addition, we found that individuals who experience binocularly presented pattern motion more perceived interocularly-coherent stimuli more. This result suggests that a potential common mechanism may mediate binocular integration of visual information during binocular rivalry.
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Date Issued: 2021
PURL: http://purl.flvc.org/fau/fd/FA00013815
Subject Headings: Binocular rivalry, Visual perception
Format: Document (PDF)

Title: Traveling Waves of Dominance in Motion-Induced Blindness.
Creator: Cox, Dustin, Hong, Sang Wook, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Psychology
Abstract/Description: In the present study, it was examined whether the spatiotemporal dynamics of transitions towards target dominance in motion-induced blindness (MIB) were wave-like, similar to those in binocular rivalry. The spatiotemporal dynamics of transitions towards dominance in MIB were further compared with those in binocular rivalry to reveal a potential neural locus of MIB. Across a series of experiments, the relationship between target length, stimulus structure, presentation location and the latency...
Show moreIn the present study, it was examined whether the spatiotemporal dynamics of transitions towards target dominance in motion-induced blindness (MIB) were wave-like, similar to those in binocular rivalry. The spatiotemporal dynamics of transitions towards dominance in MIB were further compared with those in binocular rivalry to reveal a potential neural locus of MIB. Across a series of experiments, the relationship between target length, stimulus structure, presentation location and the latency for circular arc segment-shaped targets to reappear was examined, respectively. It was found that target reappearance durations increase with target length, as if they reappear in a gradual, wavelike fashion. Target reappearance durations were decreased for collinear compared to radial targets, but they were not influenced by the location of target presentation. The results suggest MIB target reappearances are associated with traveling waves of dominance, and early visual cortex is a likely neural substrate in which these wave-like transitions occur.
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Date Issued: 2016
PURL: http://purl.flvc.org/fau/fd/FA00004704, http://purl.flvc.org/fau/fd/FA00004704
Subject Headings: Binocular rivalry, Binocular vision, Visual pathways, Visual perception
Format: Document (PDF)

Title: The effect of spatial attention on pupil dynamics.
Creator: Daniels, Lori B., Charles E. Schmidt College of Science, Department of Psychology
Abstract/Description: Although it is well known that the pupil responds dynamically to changes in ambient light levels, the results from this dissertation show for the first time that the pupil also responds dynamically to changes in spatially distributed attention. Using a variety of orientating tasks, subjects alternated between focusing attention on a central stimulus and spreading attention over a larger area. Fourier analysis of the fluctuating pupil diameter indicated that: 1) pupil diameter changed at the...
Show moreAlthough it is well known that the pupil responds dynamically to changes in ambient light levels, the results from this dissertation show for the first time that the pupil also responds dynamically to changes in spatially distributed attention. Using a variety of orientating tasks, subjects alternated between focusing attention on a central stimulus and spreading attention over a larger area. Fourier analysis of the fluctuating pupil diameter indicated that: 1) pupil diameter changed at the rate of attention variation, dilating with broadly spread attention and contracting with narrowly focused attention, and 2) pupillary differences required changes in attentional spread; there were no differences in pupil diameter between sustained broad and sustained spread attention. Given that broadly spread attention increases the relative activation of large receptive fields and narrowly focused attention increases the relative activation of small receptive fields (Balz & Hock, 1997), the results of this study indicate that these attentional effects on receptive field activation can be mediated by changes in pupil diameter. That is, under broad attention, the corresponding pupillary dilation observed would increase spherical aberration, blurring the image thereby reducing high spatial frequency information and decreasing the activation of relatively small cortical receptive fields compared to relatively large receptive fields. This increased perception of low spatial frequencies would be beneficial in cases where attention is spread over a large area. Alternatively, under narrow attention the resulting pupillary constriction reduces spherical aberration sharpening the image and preserving high spatial frequency information resulting in a relatively increased response of small receptive fields.
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Date Issued: 2010
PURL: http://purl.flvc.org/FAU/1870692
Subject Headings: Visual perception, Eye, Physiology, Optics, Adaptive, Visual pathways
Format: Document (PDF)

Title: Autonomous landing and road following using two-dimensional visual cues.
Creator: Yakali, Huseyin Hakan., Florida Atlantic University, Raviv, Daniel, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: This dissertation deals with vision-based perception-action closed-loop control systems based on 2-D visual cues. These visual cues are used to calculate the relevant control signals required for autonomous landing and road following. In the landing tasks it has been shown that nine 2-D visual cues can be extracted from a single image of the runway. Seven of these cues can be used to accomplish parallel flight and glideslope tracking tasks of the landing. For the road following task, three...
Show moreThis dissertation deals with vision-based perception-action closed-loop control systems based on 2-D visual cues. These visual cues are used to calculate the relevant control signals required for autonomous landing and road following. In the landing tasks it has been shown that nine 2-D visual cues can be extracted from a single image of the runway. Seven of these cues can be used to accomplish parallel flight and glideslope tracking tasks of the landing. For the road following task, three different algorithms based on two different 2-D visual cues are developed. One of the road following algorithms can be used to generate steering and velocity commands for the vehicle. Glideslope tracking of the landing task has been implemented in real-time on a six-degree-of-freedom flight simulator. It has been shown that the relevant information computed from 2-D visual cues is robust and reliable for the landing tasks. Road following algorithms were tested successfully up to 50km/h on a US Army High Mobility and Multipurpose Wheeled Vehicle (HMMWV) equipped with a vision system and on a Denning mobile robot. The algorithms have also been tested successfully using PC-based software simulation programs.
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Date Issued: 1994
PURL: http://purl.flvc.org/fcla/dt/12365
Subject Headings: Visual perception, Landing aids (Aeronautics)
Format: Document (PDF)

Title: Visual Exploratory Behavior in the Squirrel Monkey.
Creator: Gammon, William D., Michels, Kenneth M., Florida Atlantic University
Abstract/Description: The viewing behavior of three adult male squirrel monkeys (Saimiri soiureus) to several visual incentives was studied by a paired-comparison testing technique. The total number of times and total duration of time that Ss viewed each incentive, at each window of a two-window cubicle, were recorrlerl automatically. The total duration of time Ss spent in visual exploration was relatively stable over days, averaging 40 per cent of the total testing time. Ss spent more time (p
Show moreThe viewing behavior of three adult male squirrel monkeys (Saimiri soiureus) to several visual incentives was studied by a paired-comparison testing technique. The total number of times and total duration of time that Ss viewed each incentive, at each window of a two-window cubicle, were recorrlerl automatically. The total duration of time Ss spent in visual exploration was relatively stable over days, averaging 40 per cent of the total testing time. Ss spent more time (p< .01) viewing another monkey than a toy snake or an empty plexiglass cage. Differences in time spent viewing the latter two incentives were not significant. Habituation to visual incentives (i.e., decrement in mean drration per response) was demonstrated over successive half-hour intervals within days (p < .01), but not over successive days. Differences in rate of habituation between visual incentives were not significant. Differences in rate of extinction following acquisition on each visual incentive were not significant.
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Date Issued: 1968
PURL: http://purl.flvc.org/fau/fd/FA00000767
Subject Headings: Visual discrimination, Monkeys--Behavior
Format: Document (PDF)

Title: Scientific data visualization interface.
Creator: Hughes, Rowan, Huang, Shihong
Date Issued: 2013-04-05
PURL: http://purl.flvc.org/fcla/dt/3361097
Subject Headings: Data visualization, Information visualization, Information visualization--Computer programs, Interactive computer systems
Format: Document (PDF)

Title: Temporal resolution and spectral sensitivity of the visual system of three coastal shark speciesfrom different light environments.
Creator: McComb, Dawn Michelle, Frank, Tamara M., Hueter, R. E., Kajiura, Stephen M., Harbor Branch Oceanographic Institute
Date Issued: 2010
PURL: http://purl.flvc.org/fau/fd/FA00007091
Subject Headings: Sharks, Visual system, Spectral sensitivity, Night Vision
Format: Document (PDF)

Title: Tomorrow is Saint Valentine’s Day: Ophelia Visualized.
Creator: Rutt, Otto J., McConnell, Brian, Florida Atlantic University, Department of Visual Arts and Art History, Dorothy F. Schmidt College of Arts and Letters
Abstract/Description: “Tomorrow is Saint Valentine’s Day” is a manic line of dialogue spoken by Ophelia in Shakespeare’s Hamlet. I have chosen that line as the title of my thesis and exhibition. Much of my graduate work has emanated from scenes in Shakespeare’s plays. I make dimensional paintings, prints, and sculptures that leverage a wide variety of media, material, and processes. I have chosen the intense drama of Ophelia’s final appearance on stage to inspire this body of work. The drama and imagery of...
Show more“Tomorrow is Saint Valentine’s Day” is a manic line of dialogue spoken by Ophelia in Shakespeare’s Hamlet. I have chosen that line as the title of my thesis and exhibition. Much of my graduate work has emanated from scenes in Shakespeare’s plays. I make dimensional paintings, prints, and sculptures that leverage a wide variety of media, material, and processes. I have chosen the intense drama of Ophelia’s final appearance on stage to inspire this body of work. The drama and imagery of Shakespeare’s plays has been a profound source of ideas for me. They motivate me to connect with all available resources in an energetic way to create visually captivating pieces of art. My objective is not to illustrate any given scene but to leverage the text for a personal artistic experience. The result is an abstraction that captures the energy of a dramatic moment. The art I produce is an expressive record of my relationship with the literature.
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Date Issued: 2020
PURL: http://purl.flvc.org/fau/fd/FA00013585
Subject Headings: Art, Visual art, Ophelia (Fictitious character)
Format: Document (PDF)

Title: WHISPERS FROM THE GHOST HOUSE.
Creator: Jones, Symantha, Ward, Julie Anne, Florida Atlantic University, Department of Visual Arts and Art History, Dorothy F. Schmidt College of Arts and Letters
Abstract/Description: Whispers from the Ghost House is the concrete manifestation of the mutable nature of childhood memory held within the nebulous forms of home. In all of its many incarnations home exists as a construction out of time and space that absorbs the accumulation of life performed around and within its walls. Home is idealized and sought after, both sanctuary and snare. The iterations of home I created are primarily constructed from repurposed materials with inherent histories; unstable and malleable...
Show moreWhispers from the Ghost House is the concrete manifestation of the mutable nature of childhood memory held within the nebulous forms of home. In all of its many incarnations home exists as a construction out of time and space that absorbs the accumulation of life performed around and within its walls. Home is idealized and sought after, both sanctuary and snare. The iterations of home I created are primarily constructed from repurposed materials with inherent histories; unstable and malleable. Cardboard and paper holds the plastic veneer of various mediums to shape, color, and mar surfaces. The home develops an identity as it absorbs each action and material, gradually becoming an entity as well as a receptacle, to both display and obfuscate the nostalgic and the unattainable. Each hardened home becomes a haunted being in which memories interlace and fade away as they transform into the wild twisted houses of reverie.
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Date Issued: 2020
PURL: http://purl.flvc.org/fau/fd/FA00013477
Subject Headings: Visual arts, Art, Mixed media works
Format: Document (PDF)

Title: UNAUTHORIZED ACCESS: A visual narrative on the scientific evolution, and artistic exploration of the blood brain barrier disruption protocol.
Creator: Odibi, Johnson O., McAfee, Francis X., Blakely, Randy, Florida Atlantic University, School of Communication & Multimedia Studies, Dorothy F. Schmidt College of Arts and Letters
Abstract/Description: The blood brain barrier (BBB) is the brain’s defense mechanism in its maintenance of homeostasis. This network comprises an intricate, functional shield for the human brain, equipped with highly specialized cells like pericytes, astrocytic end-feet, endothelial and neuronal cells. This highly organized barrier maintains the brain’s structural integrity by revealing a discriminatory absorbency of molecules based on their molecular weight and ample fat solubility. In view of this impediment to...
Show moreThe blood brain barrier (BBB) is the brain’s defense mechanism in its maintenance of homeostasis. This network comprises an intricate, functional shield for the human brain, equipped with highly specialized cells like pericytes, astrocytic end-feet, endothelial and neuronal cells. This highly organized barrier maintains the brain’s structural integrity by revealing a discriminatory absorbency of molecules based on their molecular weight and ample fat solubility. In view of this impediment to the delivery of many prospective therapeutic agents from crossing the inviolate BBB, a myriad of innovative surgical and pharmacological interventions have been developed to bypass it, one of which is the BBBD protocol.
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Date Issued: 2019
PURL: http://purl.flvc.org/fau/fd/FA00013401
Subject Headings: Blood-Brain Barrier, Visualization, Scientific illustration
Format: Document (PDF)

Title: Investigating the Temporal Dynamics of Advanced Information Processing During Interocular Suppression Using Electroencephalography and Pattern Classification.
Creator: Cox, Dustin, Hong, Sang Wook, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Psychology
Abstract/Description: A thorough delineation of the extent of processing possible without visual awareness is necessary to elucidate the neural mechanisms of visual awareness. Despite extensive research, it is presently unclear whether invisible stimuli can undergo advanced processing. To introduce existing work on this topic, previous behavioral efforts to investigate the extent of processing possible without visual awareness and the psychophysical methods used to render stimuli invisible, such as visual masking...
Show moreA thorough delineation of the extent of processing possible without visual awareness is necessary to elucidate the neural mechanisms of visual awareness. Despite extensive research, it is presently unclear whether invisible stimuli can undergo advanced processing. To introduce existing work on this topic, previous behavioral efforts to investigate the extent of processing possible without visual awareness and the psychophysical methods used to render stimuli invisible, such as visual masking and interocular suppression-based techniques, are discussed. Physiological evidence that provide support for and against the possibility that advanced information processing can occur without visual awareness are addressed. The basics of multivariate pattern classification techniques are outlined. The potential of using multivariate pattern classification analyses in conjunction with neuroimaging in the temporal domain to investigate whether advanced processing can occur without visual awareness is discussed. An original study using electroencephalography (EEG) and pattern classification techniques to investigate the extent of processing possible without visual awareness is outlined. The results of the analyses reveal that a pattern classifier did not extract neural signatures of categorical processing from EEG recordings when participants viewed an image that remained invisible for the duration of its presentation. In contrast, the results from a second experiment reveal that the pattern classifier was able to decode the category of invisible images from the EEG time series when the images would eventually become visible. The results provide support for the idea that under certain circumstances, such as when the depth of interocular suppression is reduced, advanced processing for invisible stimuli can occur.
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Date Issued: 2019
PURL: http://purl.flvc.org/fau/fd/FA00013193
Subject Headings: Advanced information processing, Electroencephalography, Neuroimaging, Visual perception
Format: Document (PDF)

Title: THE EFFECT OF WORD NOVELTY ON THE P300 COMPONENT OF THE VISUAL EVOKED POTENTIAL IN YOUNG AND ELDERLY ADULTS.
Creator: MCDONOUGH, BRUCE EDWARD, Florida Atlantic University
Abstract/Description: Visual evoked potentials were elicited by tachistoscopic presentation of familiar (real words) and novel (pseudowords) verbal stimuli to young and elderly adults. The amplitude and latency of the P300 component did not differ significantly for any of the experimental conditions. Excessive noise in the averaged waveforms, most likely due to eye and motor contaminants, may have been partly responsible for the failure to confirm the hypotheses.
Date Issued: 1978
PURL: http://purl.flvc.org/fcla/dt/13935
Subject Headings: Visual evoked response, Evoked potentials (Electrophysiology)
Format: Document (PDF)

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