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THE INFLUENCE OF EVENT SEGMENTATION ON MEMORY FOR ACTORS AND THEIR ACTIONS
Title
THE INFLUENCE OF EVENT SEGMENTATION ON MEMORY FOR ACTORS AND THEIR ACTIONS.
Creator
Smithwick, Megan S., Kersten, Alan, Florida Atlantic University, Department of Psychology, Charles E. Schmidt College of Science
Abstract/Description
Previous research indicates that event boundaries can hinder or facilitate memory. The present study aimed to examine the influence of physical context changes (i.e., event boundaries) on the memory for actors and the actions they performed. Undergraduate participants (N=121) from Florida Atlantic University viewed two different video clip set types of actors performing various actions. The continuous context (CC) video set type included four different actors performing actions in the same...
Show morePrevious research indicates that event boundaries can hinder or facilitate memory. The present study aimed to examine the influence of physical context changes (i.e., event boundaries) on the memory for actors and the actions they performed. Undergraduate participants (N=121) from Florida Atlantic University viewed two different video clip set types of actors performing various actions. The continuous context (CC) video set type included four different actors performing actions in the same physical context. The discontinuous context (DC) video set type contained four actors, the first, second, and fourth actors shown in each set performed actions in the same physical context (e.g., a library), while the third actor in the set performed an action in a different physical context (e.g., a playground). After viewing the videos, memory for the actors and the actions was evaluated using the Person-Action-Conjunction (PAC) test in a retrieval session. Participants provided significantly more ‘yes’ responses to old item than to conjunction items at retrieval. No significant differences in the proportion of ‘yes’ were found between the CC video items and DC video items. These results could be due to the manipulation of physical context not being sufficiently strong to influence event segmentation.
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Date Issued
2021
PURL
http://purl.flvc.org/fau/fd/FA00013866
Subject Headings
Memory, Memory--Research
Format
Document (PDF)
Is age really just a number? Neuropsychological predictors of eyewitness memory errors
Title
Is age really just a number? Neuropsychological predictors of eyewitness memory errors.
Creator
Tsikis, Tina, Earles, Julie, Kersten, Alan
Date Issued
2012-04-06
PURL
http://purl.flvc.org/fcla/dt/3349047
Subject Headings
Memory, Eyewitness identification, Forensic psychology, False memories, Recollection research, Eyewitness memory, Neuropsychology
Format
Document (PDF)
Memory Narrowing and Thematic Arousal: The Effect of Negative Emotion on Memory for Event Details
Title
Memory Narrowing and Thematic Arousal: The Effect of Negative Emotion on Memory for Event Details.
Creator
Curtayne, Eileen, Kersten, Alan, Florida Atlantic University
Abstract/Description
Laney, Campbell, Heuer, and Reisberg (2004) proposed that the preferential recall of central relative to peripheral information in a negative event (known as "memory narrowing") is the product of presenting participants with a visually arousing attention magnet -- not negative emotion, as the Easterbrook ( 1959) hypothesis suggests. Laney et al. used conceptually meaningful (or thematically arousing) events to stimulate an emotional response in participants instead of visual arousal and found...
Show moreLaney, Campbell, Heuer, and Reisberg (2004) proposed that the preferential recall of central relative to peripheral information in a negative event (known as "memory narrowing") is the product of presenting participants with a visually arousing attention magnet -- not negative emotion, as the Easterbrook ( 1959) hypothesis suggests. Laney et al. used conceptually meaningful (or thematically arousing) events to stimulate an emotional response in participants instead of visual arousal and found evidence that negative arousal improves memory for all categories of details. The current study tested Laney et al. 's theory that a visually arousing stimulus, rather than negative arousal, is responsible for memory nan·owing as well as their position that negative arousal benefits recall of both central and peripheral information. Support was found for both assertions of Laney et al. The presence of a visually salient and emotionally provoking detail produced an effect similar to the traditional memory narrowing pattem and exposure to the negative thematic climax resulted in improved memory performance for all the detail categories. However, this latter effect was observed only for the female participants. No evidence was found to support the Easterbrook hypothesis.
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Date Issued
2007
PURL
http://purl.flvc.org/fau/fd/FA00000850
Subject Headings
Eyewitness identification--Psychological aspects, Memory--Research, Cognitive neuroscience
Format
Document (PDF)
Influence of small conductance calcium-activated potassium channels (SK,Kca2) on long-term memory
Title
Influence of small conductance calcium-activated potassium channels (SK,Kca2) on long-term memory: global and local analysis across time- and task- dependent measures.
Creator
Vick, Kyle A., Charles E. Schmidt College of Science, Department of Psychology
Abstract/Description
Small conductance calcium-activated potassium (SK) channels are found ubiquitously throughout the brain and modulate the encoding of learning and memory. Systemic injection of 1-ethyl-2-benzimidalzolinoe (EBIO), a SK channel activator, impairs the encoding of novel object memory and locomotion but spares fear memory encoding in C57BL/6NHsd mice. The memory impairments discovered were not due to non-cognitive performance confounds such as ataxia, anxiety, attention or analgesia. Further...
Show moreSmall conductance calcium-activated potassium (SK) channels are found ubiquitously throughout the brain and modulate the encoding of learning and memory. Systemic injection of 1-ethyl-2-benzimidalzolinoe (EBIO), a SK channel activator, impairs the encoding of novel object memory and locomotion but spares fear memory encoding in C57BL/6NHsd mice. The memory impairments discovered were not due to non-cognitive performance confounds such as ataxia, anxiety, attention or analgesia. Further investigation with intra-hippocampal application of EBIO revealed SK channels in dorsal CA1 contribute to the encoding deficits seen systemically, but do not account for the full extent of the impairment. Concentrated activation of dorsal CA1 SK channels do not influence fear memory encoding or locomotor impairments. Taken together, these data indicate SK channels, especially in the dorsal hippocampus, have a modulatory role on novel object memory encoding, but not retrieval; however, pharmacological activation of hippocampal SK channels does not appear to influence fear memory encoding.
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Date Issued
2009
PURL
http://purl.flvc.org/FAU/192991
Subject Headings
Mice as laboratory animals, Cellular signal transduction, Memory, Research, Biological transport, Research, Potassium channels, Physiological effect
Format
Document (PDF)
The effect of small conductance calcium-activated potassium channels on emotional learning and memory
Title
The effect of small conductance calcium-activated potassium channels on emotional learning and memory.
Creator
Sanguinetti, Shannon, Stackman, Robert W., Florida Atlantic University, Charles E. Schmidt College of Science, Department of Psychology
Abstract/Description
Small conductance Ca2+-activated K+ (SK) channels have been shown to alter the encoding of spatial and non-spatial memory in the hippocampus by shaping glutamatergic postsynaptic potentials and modulating NMDA receptor-dependent synaptic plasticity. When activated, dendritic SK channels reduce hippocampal neuronal excitability and LTP. Similar SK channel properties have been demonstrated in lateral amygdala (LA) pyramidal neurons. Additionally, induction of synaptic plasticity and beta...
Show moreSmall conductance Ca2+-activated K+ (SK) channels have been shown to alter the encoding of spatial and non-spatial memory in the hippocampus by shaping glutamatergic postsynaptic potentials and modulating NMDA receptor-dependent synaptic plasticity. When activated, dendritic SK channels reduce hippocampal neuronal excitability and LTP. Similar SK channel properties have been demonstrated in lateral amygdala (LA) pyramidal neurons. Additionally, induction of synaptic plasticity and beta-adrenoreceptor activation in LA pyramidal neurons causes PKA-mediated internalization of SK channels from the postsynaptic density. Chronic activation of the amygdala through repetitive stressful stimuli can lead to excitatory synaptic strengthening that may create permanent hyper-excitability in its circuitry. This mechanism may contribute to a number of mood and anxiety disorders. The selective influence of SK channels in the LA on anxiety and fear conditioning are not known. The thesis project outlined herein examined whether SK channel blockade by bee venom peptide, apamin, during a repetitive acute fear conditioning paradigm was sufficient to alter fear memory encoding and the resulting behavioral outcome. Following the final fear memory test session, mice were tested in the open field immediately after the second fear conditioning test session. The findings indicate that intracranial LA microinfusions of apamin did not affect memory encoding or subsequent anxiety.
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Date Issued
2015
PURL
http://purl.flvc.org/fau/fd/FA00004543, http://purl.flvc.org/fau/fd/FA00004543
Subject Headings
Biological transport -- Research, Cellular signal transduction, Memory -- Research, Mice as laboratory animals, Potassium channels -- Physiological effect
Format
Document (PDF)
influence of motion type on memory of simple events
Title
The influence of motion type on memory of simple events.
Creator
Berger, Johanna D., Charles E. Schmidt College of Science, Department of Psychology
Abstract/Description
This experiment investigated an individual's memory of specific motion events, unique actor, intrinsic motion, and extrinsic motion combination. Intrinsic motions involve the movement of an individual's body parts in a specific manner to move around, while extrinsic motions specify a path in reference to an external object. Participants viewed video clips, each depicting an actor performing a unique extrinsic and intrinsic motion combination. One week later, they viewed a different series of...
Show moreThis experiment investigated an individual's memory of specific motion events, unique actor, intrinsic motion, and extrinsic motion combination. Intrinsic motions involve the movement of an individual's body parts in a specific manner to move around, while extrinsic motions specify a path in reference to an external object. Participants viewed video clips, each depicting an actor performing a unique extrinsic and intrinsic motion combination. One week later, they viewed a different series of retrieval video clips consisting of old (identical to encoding), extrinsic conjunction (extrinsic motion previously performed by different actor), intrinsic conjunction (intrinsic motion previously performed by different actor), and new (novel extrinsic or intrinsic motion) video clips. Participants responded "yes" to viewing the old video clips the most often, followed by conjunction video clips, and then new video clips. Furthermore, there were a greater number of "yes" event memory recognition responses for extrinsic conjunction items than intrinsic conjunction items.
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Date Issued
2009
PURL
http://purl.flvc.org/FAU/186673
Subject Headings
Recollection (Psychology), Context effects (Psychology), Memory, Research, Human information processing, Research, Transference (Psychology), Motion segmentation
Format
Document (PDF)
Uncovering the role of the rodent dorsal hippocampus in spatial and object memory retrieval
Title
Uncovering the role of the rodent dorsal hippocampus in spatial and object memory retrieval.
Creator
Rios, Lisa, Charles E. Schmidt College of Science, Department of Psychology
Abstract/Description
Male C7BL/6J mice were implanted with bilateral dorsal CA1 guide cannulae. After confirming that intrahippocampal microinfusion of muscimol impaired hippocampal function, demonstrated by impaired performance in the Morris water maze, the influence of intrahippocampal muscimol was tested in the Novel Object Recognition paradigm. During a test session 24 h after the last habituation/sample session, mice were presented with one familiar object and one novel object. Successful retention of object...
Show moreMale C7BL/6J mice were implanted with bilateral dorsal CA1 guide cannulae. After confirming that intrahippocampal microinfusion of muscimol impaired hippocampal function, demonstrated by impaired performance in the Morris water maze, the influence of intrahippocampal muscimol was tested in the Novel Object Recognition paradigm. During a test session 24 h after the last habituation/sample session, mice were presented with one familiar object and one novel object. Successful retention of object memory was inferred if mice spent more time exploring the novel object than the familiar object. Results demonstrate that muscimol infused into dorsal CA1 region prior to the test session eliminates novel object preference, indicating that the hippocampus is necessary for the retrieval of this non-spatial memory - a topic that has garnered much debate. Understanding the similarities between rodent and human hippocampal function could enable future animal studies to effectively answer questions about diseases and disorders affecting human learning and memory.
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Date Issued
2011
PURL
http://purl.flvc.org/FAU/3172696
Subject Headings
Rodents as laboratory animals, Memory, Research, Cellular signal transduction, Cognitive neuroscience, Hippocampus (Brain), Space perception
Format
Document (PDF)
Of Mice, Men and Memories: The Role of the Rodent Hippocampus in Object Recognition
Title
Of Mice, Men and Memories: The Role of the Rodent Hippocampus in Object Recognition.
Creator
Cohen, Sarah J., Stackman, Robert W., Florida Atlantic University, Charles E. Schmidt College of Science, Center for Complex Systems and Brain Sciences
Abstract/Description
Establishing appropriate animal models for the study of human memory is paramount to the development of memory disorder treatments. Damage to the hippocampus, a medial temporal lobe brain structure, has been implicated in the memory loss associated with Alzheimer’s disease and other dementias. In humans, the role of the hippocampus is largely defined; yet, its role in rodents is much less clear due to conflicting findings. To investigate these discrepancies, an extensive review of the rodent...
Show moreEstablishing appropriate animal models for the study of human memory is paramount to the development of memory disorder treatments. Damage to the hippocampus, a medial temporal lobe brain structure, has been implicated in the memory loss associated with Alzheimer’s disease and other dementias. In humans, the role of the hippocampus is largely defined; yet, its role in rodents is much less clear due to conflicting findings. To investigate these discrepancies, an extensive review of the rodent literature was conducted, with a focus on studies that used the Novel Object Recognition (NOR) paradigm for testing. The total amount of time the objects were explored during training and the delay imposed between training and testing seemed to determine hippocampal recruitment in rodents. Male C57BL/6J mice were implanted with bilateral dorsal CA1 guide cannulae to allow for the inactivation of the hippocampus at discrete time points in the task. The results suggest that the rodent hippocampus is crucial to the encoding, consolidation and retrieval of object memory. Next, it was determined that there is a delay-dependent involvement of the hippocampus in object memory, implying that other structures may be supporting the memory prior to the recruitment of hippocampus. In addition, when the context memory and object memory could be further dissociated, by altering the task design, the results imply a necessary role for the hippocampus in the object memory, irrespective of context. Also, making the task more perceptually demanding, by requiring the mice to perform a two-dimensional to three-dimensional association between stimuli, engaged the hippocampus. Then, in the traditional NOR task, long and short training exploration times were imposed to determine brain region activity for weak and strong object memory. The inactivation and immunohistochemistry findings imply weak object memory is perirhinal cortex dependent, while strong object memory is hippocampal-dependent. Taken together, the findings suggest that mice, like humans, process object memory on a continuum from weak to strong, recruiting the hippocampus conditionally for strong familiarity. Confirming this functional similarity between the rodent and human object memory systems could be beneficial for future studies investigating memory disorders.
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Date Issued
2016
PURL
http://purl.flvc.org/fau/fd/FA00004580
Subject Headings
Memory--Research., Mice as laboratory animals., Hippocampus (Brain)--Physiology., Episodic memory., Neurotransmitter receptors., Cellular control mechanisms., Cellular signal transduction., Human information processing.
Format
Document (PDF)
Integrity and reflections of the past
Title
Integrity and reflections of the past: a phenomenographic analysis.
Creator
Rio, Germina Emily Risos., Christine E. Lynn College of Nursing
Abstract/Description
The graying of America as a sociological and health care phenomenon continues to dictate the demand for creative and innovative interventions that can directly influence the quality of life of nursing home residents. Creative Reminiscence is a program that fosters the active reliving of the past through narration, such as in story-telling, and the use of creative art expression to uncover meaningful life events or valuable life experiences. The purpose of this study was to investigate and...
Show moreThe graying of America as a sociological and health care phenomenon continues to dictate the demand for creative and innovative interventions that can directly influence the quality of life of nursing home residents. Creative Reminiscence is a program that fosters the active reliving of the past through narration, such as in story-telling, and the use of creative art expression to uncover meaningful life events or valuable life experiences. The purpose of this study was to investigate and describe the meaningful life events elicited by the experience of Creative Reminiscence using a phenomenographic approach. Existing (archived) data-transcribed interviews, poetry and painting on planters that were obtained from 20 participants of the Creative Reminiscence program entitled Le Jardin de Sante were analyzed. Five variations of meaningful memories evoked by Creative Reminiscence were identified. These are described as follows: (a) memories that rejuvenate the elder's sense of connectio n; (b) memories that revive the elder's sense of love and intimacy; (c) memories that restore the elder's sense of being; (d) memories that reassert the elder's sense of control; and (e) memories that reinstitute the elder's sense of purpose. In a caring interaction with Creative Reminiscence, the nursed are able to transcend, moving back in time (past) to appreciate segment(s) of their lives, with triumphs and disappointments that give meaning to their inner conflict/human struggle (present), and integrate a sense of confidence and acceptance of their lives to sustain well-being and a sense of wholeness. This research highlights the similarities and differences in the description of memories by the nursing home residents evoked during Creative Reminiscence., The results of the study support Erikson's notion of the circular nature of the life cycle, wherein there is an inherent need at the last stage of life to re-integrate ascendant psychosocial themes.Taking into account the meaning that nursing home residents ascribe to their experiences provided data on strategies nurses and caregivers can use effectively to help these elders transcend despair. Further research is recommended using a more diverse sample and in more diverse geographical locations. Current standardized instruments may be revised to quantify effects on the ascendant psychosocial themes.
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Date Issued
2008
PURL
http://purl.flvc.org/fcla/dt/177012
Subject Headings
Aging, Psychological aspects, Memory in old age, Analysis, Nursing, Philosophy, Depression in old age, Research, Reminiscing in old age
Format
Document (PDF)