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Articles 181 - 210 of 248

Full-Text Articles in Experimental Analysis of Behavior

On Reporting The Onset Of The Intention To Move, Uri Maoz, Liad Mudrik, Ram Rivlin, Ian Ross, Adam Mamelak, Gideon Yaffe Nov 2014

On Reporting The Onset Of The Intention To Move, Uri Maoz, Liad Mudrik, Ram Rivlin, Ian Ross, Adam Mamelak, Gideon Yaffe

Psychology Faculty Books and Book Chapters

"In 1965, Hans Kornhuber and Luder Deecke made a discovery that greatly influenced the study of voluntary action. Using electroencephalography (EEG), they showed that when aligning some tens of trials to movement onset and averaging, a slowly decreasing electrical potential emerges over central regions of the brain. It starts 1 second ( s) or so before the onset of the voluntary action1 and continues until shortly after the action begins. They termed this the Bereitschaftspotential, or readiness potential (RP; Kornhuber & Deecke, 1965).2 This became the first well-established neural marker of voluntary action. In that, the RP allowed for more …


Implicit Theories Of Intelligence And Learning A Novel Mathematics Task, Nathan Oehme Rudig Aug 2014

Implicit Theories Of Intelligence And Learning A Novel Mathematics Task, Nathan Oehme Rudig

UNLV Theses, Dissertations, Professional Papers, and Capstones

The social-cognitive model of motivation states that students adopt a theory of the nature of intelligence that guides their goals in academia and their responses to academic setbacks. Students who believe intelligence is an unchanging entity within them are more likely to adopt goals to display high ability, hide low ability, and respond helplessly to failed schoolwork. Conversely, a student who believes intelligence is a measure of effort and persistence will be motivated to gather knowledge and acquire new skills. The current study investigated the role theories of intelligence play in the field of mathematics understanding. In two experiments, participants …


Effects Of Licensed And Unlicensed Negation On The Activation Of Negated Concepts, Kevin Autry May 2014

Effects Of Licensed And Unlicensed Negation On The Activation Of Negated Concepts, Kevin Autry

Graduate Theses and Dissertations

Research on the activation of negated concepts has demonstrated situations in which negated concepts are less active than non-negated concepts (e.g., MacDonald & Just, 1989) as well as situations where negated and non-negated concepts are equally active (e.g., Autry & Levine, 2012, in press). Based on the pragmatic inference hypothesis (Levine & Hagaman, 2008), the present experiments tested the hypothesis that the activation level of negated concepts is a function of the context in which they occur. In two experiments, the activation level of target concepts was measured following licensing or non-licensing contexts using lexical decision and reading times. Although …


[Sabbatical Report], Steven Haggbloom Apr 2014

[Sabbatical Report], Steven Haggbloom

Sabbatical Reports

The purpose of my sabbatical leave was to develop an independent research program I could implement upon returning to full-time faculty status beginning in the fall 2014 semester after a nearly 12-year term as department head. My intent was to develop a research program that would utilize the University's recently acquired EEG/ERP equipment to explore neural correlates of reward based and error driven learning.


The Effects Of Serial Position, Evaluation Format, And Behavioral Isolate On Verbal And Nonverbal Clinical Cue Recognition And Performance Ratings, Timothy Robert Turner Jr. Apr 2014

The Effects Of Serial Position, Evaluation Format, And Behavioral Isolate On Verbal And Nonverbal Clinical Cue Recognition And Performance Ratings, Timothy Robert Turner Jr.

Psychology Theses & Dissertations

Standardized patients are individuals trained to realistically portray specific physical and psychological symptoms and evaluate healthcare trainees on their patient interaction skills. Prior research suggests that individual differences among standardized patients often result in assessment variance. This study examined the effects of cue serial position and evaluation format on individuals' perceptual awareness and recognition accuracy of verbal and nonverbal clinical cues. It was predicted that implementing periodic evaluations would reduce participant working memory load and permit better awareness and recognition of relevant clinical cues than the traditional post-scenario evaluation format. The concurrent evaluation benefit was also expected to mitigate the …


The Politics Of The Face-In-The-Crowd, Mark S. Mills, Kevin B. Smith, John R. Hibbing, Michael Dodd Jan 2014

The Politics Of The Face-In-The-Crowd, Mark S. Mills, Kevin B. Smith, John R. Hibbing, Michael Dodd

Department of Psychology: Faculty Publications

Recent work indicates that the more conservative one is, the faster one is to fixate on negative stimuli, whereas the less conservative one is, the faster one is to fixate on positive stimuli. The present series of experiments used the face-in-the-crowd paradigm to examine whether variability in the efficiency with which positive and negative stimuli are detected underlies such speed differences. Participants searched for a discrepant facial expression (happy or angry) amid a varying number of neutral distractors (Experiments 1 and 4). A combination of response time and eye movement analyses indicated that variability in search efficiency explained speed differences …


Level P300: An Erp And Working Memory Evaluation Of Gamers And Non-Gamers, Derek Matthew Ellis Jan 2014

Level P300: An Erp And Working Memory Evaluation Of Gamers And Non-Gamers, Derek Matthew Ellis

All Master's Theses

The Entertainment Software Rating Board (ESRB) estimates that the average U.S. household owns at least one video game console. The ESRB also notes that 66% of parents believe video games offer mental stimulation or education. Few studies have analyzed the impact of video game play on cognition. The purpose of the current study was to investigate the impact of video games on both behavioral and neurophysiological measures (event-related potentials) of working memory. Stimuli used during the neurophysiological portion of the study were based on the visual odd-ball paradigm in which participants had to respond to standard and rare occurring visual …


Which Way Is Which? Examining Global/Local Processing With Symbolic Cues, Mark Mills, Michael Dodd Jan 2014

Which Way Is Which? Examining Global/Local Processing With Symbolic Cues, Mark Mills, Michael Dodd

Department of Psychology: Faculty Publications

A new method combining spatial-cueing and compound-stimulus paradigms draws on involuntary attentional orienting elicited by a spatially uninformative central arrow cue to investigate global/local processing under incidental processing conditions, wherein global/local levels were uninformative (do not aid performance) and task-irrelevant (need not be processed to perform the task). The task was peripheral target detection. Cues were compound arrows, which were either consistent (global/local arrows oriented in same direction) or inconsistent (global/local arrows oriented in opposite directions). Global/local processing was measured by spatial-cueing effects (response time [RT] difference between target locations validly cued by an arrow and targets at different locations), …


A Heart-Based Sufi Mindfulness Spiritual Practice Employing Self-Journeying, Faruk Arslan Jan 2014

A Heart-Based Sufi Mindfulness Spiritual Practice Employing Self-Journeying, Faruk Arslan

Theses and Dissertations (Comprehensive)

Spiritual Psychology is the study and practice of the art and science of the human evolution of consciousness. The heart occupies an important place in Sufism and is considered to contain the divine spark that leads to spiritual realization. Fethullah Gülen’s action-oriented Sufi methods described in his book series “The Emerald Hills of the Heart” provides the basis for a heart-based therapeutic intervention through self-journeying, which is the objective of this thesis. These self-purification and mindfulness-related transpersonal methods generate a form of treatment that is culturally sensitive. Through my reflections in this research, I transformed my personal experiences into …


Treatment Of Psychiatric Inpatients With Relationship Dysfunction Using A Short Term Cognitive Interpersonal Intervention: A Pilot Study, Tamra Rasberry Jul 2013

Treatment Of Psychiatric Inpatients With Relationship Dysfunction Using A Short Term Cognitive Interpersonal Intervention: A Pilot Study, Tamra Rasberry

Doctoral Dissertations and Projects

Relationship conflict for the psychiatric patient can have significant detrimental effects. There are specific types of interactions that can increase conflict and predict the potential for relapse; these have been identified by research and designated as components of Expressed Emotion (EE). Cognitive Behavioral Therapy (CBT) and Interpersonal Therapy (IPT) have been very effective when targeting specific psychiatric diagnoses, but less effective when addressing relationship conflict. The majority of studies addressing relationship conflict have taken place in an outpatient, long-term setting. There is limited research that utilizes an inpatient short-term intensive therapy with relationship conflict as its sole focus, targeting areas …


Does Child Sponsorship Have A Positive Impact On The Quality Of Life And Social Behavior Of Sponsored Children? Evidence From Indonesia, Mario Carrillo May 2013

Does Child Sponsorship Have A Positive Impact On The Quality Of Life And Social Behavior Of Sponsored Children? Evidence From Indonesia, Mario Carrillo

Master's Theses

Relaxing an internal constraint of an individual at early stages of life is an approach that complements traditional policy interventions aimed to alleviate poverty. The Compassion International child sponsorship program focuses their work on the emotional, social, and spiritual development of sponsored children. This study investigates the impacts of child sponsorship on the quality of life and social behavior of sponsored children using age-eligibility as an instrument for sponsorship, a time preference experiment and a trust game. The study looks specifically at self-esteem, optimism, social trust, educational outcomes, patience and reciprocity of 286 sponsored children and 234 non-sponsored children between …


Witnessing Reconciliation Reduces Arousal Of Bystanders In A Baboon Group (Papio Hamadryas Hamadryas), Peter G. Judge, Katherine A. Bachmann May 2013

Witnessing Reconciliation Reduces Arousal Of Bystanders In A Baboon Group (Papio Hamadryas Hamadryas), Peter G. Judge, Katherine A. Bachmann

Faculty Journal Articles

Reconciliation is the occurrence of friendly behaviour between opponents shortly after an aggressive conflict. In primate groups, reconciliation reduces aggression and post-conflict arousal. Aggression within a group can also increase arousal of bystanders (e.g. increase bystanders’ rates of self-directed behaviour). Since reconciliation reduces aggression between opponents, we tested whether it also reduces self-directed behaviour in bystanders. Following aggression in a captive group of hamadryas baboons, one observer conducted a focal sample on one of the combatants to document reconciliation and a second observer simultaneously conducted a focal sample on a randomly selected bystander. Matched control observations were then collected on …


Examining The Testing Effect Using The Dual-Process Signal Detection Model, Nicole Jessica Bies-Hernandez May 2013

Examining The Testing Effect Using The Dual-Process Signal Detection Model, Nicole Jessica Bies-Hernandez

UNLV Theses, Dissertations, Professional Papers, and Capstones

Taking a test can lead to enhanced long-term retention compared to not practicing the information or simply restudying, a finding known as the testing effect (Roediger, Agarwal, Kang, & Marsh, 2010). The current study examined whether the dual-process signal detection (DPSD) model (Yonelinas, 1994) offers an approach for investigating the testing effect across two experiments. Experiment 1 investigated if the DPSD model could be used to examine the testing effect, and it also examined a factor (i.e., the number of practice sessions) that influences the magnitude of the testing effect. Experiment 2 investigated whether making the final test dependent on …


The Effects Of Selected Drugs On The Memory Recall Of Sleep Deprived Mice, Jenn Pauldurai Apr 2013

The Effects Of Selected Drugs On The Memory Recall Of Sleep Deprived Mice, Jenn Pauldurai

Capstone Research Projects

Humans often make use of the neurotransmission altering effects of drugs such as caffeine, ephedrine, and ethanol. These drugs induce changes in memory and learning ability, specifically when used for sleep deprivation. English white mice (Mus musculus) have been shown to exhibit similar cognitive changes when administered drugs while sleep deprived. A sample of 20 mice was divided into three experimental groups (each group receiving a different drug) and one control group. Maze-testing demonstrated that mice performance decreased with sleep deprivation (Treatment-1) but all groups returned to baseline performance when injected (IP) with selected drugs (Treatment-2), regardless of …


Lateralized Difference In Tympanic Membrane Temperature: Emotion And Hemispheric Activity, Ruth E. Propper, Tad T. Brunyé Mar 2013

Lateralized Difference In Tympanic Membrane Temperature: Emotion And Hemispheric Activity, Ruth E. Propper, Tad T. Brunyé

Department of Psychology Faculty Scholarship and Creative Works

We review literature examining relationships between tympanic membrane temperature (TMT), affective/motivational orientation, and hemispheric activity. Lateralized differences in TMT might enable real-time monitoring of hemispheric activity in real-world conditions, and could serve as a corroborating marker of mental illnesses associated with specific affective dysregulation. We support the proposal that TMT holds potential for broadly indexing lateralized brain physiology during tasks demanding the processing and representation of emotional and/or motivational states, and for predicting trait-related affective/motivational orientations. The precise nature of the relationship between TMT and brain physiology, however, remains elusive. Indeed the limited extant research has sampled different participant populations …


Imagery Rehearsal Therapy For Posttraumatic Nightmares: Symptom Severity And Control Appraisal Outcomes, Ashley Kay Rose Jan 2013

Imagery Rehearsal Therapy For Posttraumatic Nightmares: Symptom Severity And Control Appraisal Outcomes, Ashley Kay Rose

Theses, Dissertations and Capstones

This research included a small-scale randomized, controlled trial of IRT (Imagery Rehearsal Therapy) with a sample of military veterans receiving treatment for PTSD from the VAMC in Huntington, WV. Domains assessed included nightmare severity, posttraumatic cognition, general sleep quality, and PTSD symptom severity. The intended purposes were to evaluate the relative contribution of the imagery rehearsal and rescripting component of IRT intervention in isolation from the sleep hygiene component, to assess fluctuations in symptoms across time, and to assess any relative contribution of control appraisals in outcomes. Due to an unexpectedly small sample size, no definitive conclusions can be drawn …


Sad Mood Reduces Inadvertent Plagiarism: Effects Of Affective State On Source Monitoring In Cryptomnesia, Amanda C. Gingerich, Chad S. Dodson Jan 2013

Sad Mood Reduces Inadvertent Plagiarism: Effects Of Affective State On Source Monitoring In Cryptomnesia, Amanda C. Gingerich, Chad S. Dodson

Scholarship and Professional Work - LAS

In two experiments, we explored the influence of affective state, or mood, on inadvertent plagiarism, a memory failure in which individuals either misattribute the source of an idea to themselves rather than to the true originator or simply do not recall having encountered the idea before and claim it as novel. Using a paradigm in which participants generate word puzzle solutions and later recall these solutions, we created an opportunity for participants to mistakenly claim ownership of items that were, in fact, initially generated by their computer ‘partner.’ Results of both experiments suggest that participants induced into a sad mood …


The Effect Of Emotionally Arousing Negative Images On Judgments About News Stories, Martin Daniel Smith-Rodden Jan 2013

The Effect Of Emotionally Arousing Negative Images On Judgments About News Stories, Martin Daniel Smith-Rodden

Psychology Theses & Dissertations

Two experiments investigated the effects of the presentations of photographic images (highly emotionally arousing/low arousal/no image) on people's attitudes after reading a news story. Experiment 1 presented a story and images about U.S. involvement in the Afghanistan War. Experiment 2 replicated the design with a story and images about African famine relief efforts. Consistent with predictions of the affect heuristic model of judgment formation, the addition of emotionally arousing pictures had an effect on people's support for the war in Afghanistan and their support for famine aid. Additionally, effects were observed in broader attitudes concerning participant's support of a militaristic …


The Automaticity Of Emotion V. Emotion-Laden Word Processing : Findings From Unmasked And Masked Priming Approaches, Stephanie Ann Kazanas Jan 2013

The Automaticity Of Emotion V. Emotion-Laden Word Processing : Findings From Unmasked And Masked Priming Approaches, Stephanie Ann Kazanas

Legacy Theses & Dissertations (2009 - 2024)

A lexical decision task (LDT) was used to determine if there are differences between emotion word types when they are processed, both explicitly (Experiment 1) and implicitly (Experiment 2). For example, prime-target word pairs contained either emotion (e.g., love, fear, anxious) or emotion-laden (e.g., puppy, chocolate, hospital) words. Previous experiments within this area of research have investigated how emotionality, concreteness, and abstractness affect word processing (Altarriba & Bauer, 2004; Altarriba, Bauer, & Benvenuto, 1999). As Bleasdale (1987) first argued, abstract words were, in many ways, different from concrete words. Research has continued along this vein, confirming that emotion words are …


Emotion, Community Development, And The Physical Environment: An Experimental Investigation Of Measurements, George E. Boone Jan 2013

Emotion, Community Development, And The Physical Environment: An Experimental Investigation Of Measurements, George E. Boone

Theses and Dissertations--Community & Leadership Development

A wide range of research fields have studied how emotions and behavior are affected by the physical environment. This gestalt theorist approach of experimental research as well seeks to measure emotion (using the valence-arousal scale) and micro-scale community development interactions when weighted physical environment factors are adjusted. Community development (CD) interactions at the micro-scale have received but slight attention from scholars in the CD research field and this study aims partially to investigate developing objective measures from social observations. CD interactions from recordings along with self-reported emotion through surveys in four quasi-experimental groups (where the environments were constructed based on …


The Interface Between Morphology And Action Planning: A Comparison Of Two Species Of New World Monkeys, Stacey L. Zander, Dan J. Weiss, Peter G. Judge Jan 2013

The Interface Between Morphology And Action Planning: A Comparison Of Two Species Of New World Monkeys, Stacey L. Zander, Dan J. Weiss, Peter G. Judge

Faculty Journal Articles

Recent research with several species of nonhuman primates suggests sophisticated motor-planning abilities observed in human adults may be ubiquitous among primates. However, there is considerable variability in the extent to which these abilities are expressed across primate species. In the present experiment, we explore whether the variability in the expression of anticipatory motor-planning abilities may be attributed to cognitive differences (such as tool use abilities) or whether they may be due to the consequences of morphological differences (such as being able to deploy a precision grasp). We compared two species of New World monkeys that differ in their tool use …


Capuchin Monkeys Exercise Self-Control By Choosing Token Exchange Over An Immediate Reward, Peter G. Judge, Jennifer L. Essler Jan 2013

Capuchin Monkeys Exercise Self-Control By Choosing Token Exchange Over An Immediate Reward, Peter G. Judge, Jennifer L. Essler

Faculty Journal Articles

Self-control is a prerequisite for complex cognitive processes such as cooperation and planning. As such, comparative studies of self-control may help elucidate the evolutionary origin of these capacities. A variety of methods have been developed to test for self-control in non-human primates that include some variation of foregoing an immediate reward in order to gain a more favorable reward. We used a token exchange paradigm to test for self-control in capuchin monkeys (Cebus apella). Animals were trained that particular tokens could be exchanged for food items worth different values. To test for self-control, a monkey was provided with …


Asymmetry In Resting Alpha Activity: Effects Of Handedness, Ruth E. Propper, Jenna Pierce, Mark W. Geisler, Stephen D. Christman, Nathan Bellorado Oct 2012

Asymmetry In Resting Alpha Activity: Effects Of Handedness, Ruth E. Propper, Jenna Pierce, Mark W. Geisler, Stephen D. Christman, Nathan Bellorado

Department of Psychology Faculty Scholarship and Creative Works

Frontal electroencephalographic (EEG) alpha band power during rest shows increased right, and/or decreased left, hemisphere activity under conditions of state or trait withdrawal-associated effect. Non-right-handers (NRH) are more likely to have mental illnesses and dispositions that involve such withdrawal-related effect. The aim of the study was to examine whether NRH might be characterized by increased right, relative to left, hemisphere activity during rest. Methods: The present research investigated that hypothesis by examining resting EEG alpha power in consistently-right-handed (CRH) and NRH individuals. Results: In support of the hypothesis, NRH demonstrated decreased right hemisphere alpha power, and therefore increased right hemisphere …


Randomized Clinical Trial Of Cognitive Behavioral Therapy (Cbt) Versus Acceptance And Commitment Therapy (Act) For Mixed Anxiety Disorders, Joanna Arch, Georg Eifert, Carolyn Davies, Jennifer C. Plumb Vilardaga, Raphael D. Rose, Michael G. Craske Oct 2012

Randomized Clinical Trial Of Cognitive Behavioral Therapy (Cbt) Versus Acceptance And Commitment Therapy (Act) For Mixed Anxiety Disorders, Joanna Arch, Georg Eifert, Carolyn Davies, Jennifer C. Plumb Vilardaga, Raphael D. Rose, Michael G. Craske

Psychology Faculty Articles and Research

Objective—Randomized comparisons of acceptance-based treatments with traditional cognitive behavioral therapy (CBT) for anxiety disorders are lacking. To address this research gap, we compared acceptance and commitment therapy (ACT) to CBT for heterogeneous anxiety disorders.

Method—One hundred twenty eight individuals (52% female, mean age = 38, 33% minority) with one or more DSM-IV anxiety disorders began treatment following randomization to 12 sessions of CBT or ACT; both treatments included behavioral exposure. Assessments at pre-treatment, post-treatment, 6-month, and 12-month follow-up measured anxiety specific (principal disorder Clinical Severity Ratings [CSR], Anxiety Sensitivity Index, Penn State Worry Questionnaire, Fear Questionnaire avoidance) and …


A Multimodal Approach For The Assessment Of Alexithymia: An Evaluation Of Physiological, Behavioral, And Self-Reported Reactivity To A Traumatic Event-Relevant Video, Sarah Jo Bujarski May 2012

A Multimodal Approach For The Assessment Of Alexithymia: An Evaluation Of Physiological, Behavioral, And Self-Reported Reactivity To A Traumatic Event-Relevant Video, Sarah Jo Bujarski

Graduate Theses and Dissertations

Evidence suggests alexithymia is often relatively elevated among people suffering from posttraumatic stress symptoms (PTSS). Despite a growing body of research supporting this relation between alexithymia and PTSS, it is unclear whether alexithymia is a unique predictor of emotional reactivity relative to posttraumatic stress symptoms. Furthermore, existing literature is largely limited to retrospective, self-reported symptoms. Therefore, the current study employed a multimodal assessment strategy for measuring emotional reactivity in the context of posttraumatic stress. More specifically, self-report, behavioral, and physiological measures were used to measure emotional responding to a traumatic event-related stimulus among motor vehicle accident victims. It was hypothesized …


Understanding Jurors’ Judgments In Cases Involving Juvenile Defendants: Effects Of Confession Evidence And Intellectual Disability, Cynthia J. Najdowski, Bette L. Bottoms Jan 2012

Understanding Jurors’ Judgments In Cases Involving Juvenile Defendants: Effects Of Confession Evidence And Intellectual Disability, Cynthia J. Najdowski, Bette L. Bottoms

Psychology Faculty Scholarship

Juveniles are at heightened risk for falsely confessing to crimes, particularly if they are intellectually disabled. We conducted a mock trial experiment to investigate the effects of a juvenile defendant’s confession and status as intellectually disabled on jurors’ decision making. As expected, jurors discounted a juvenile’s coerced confession: Jurors’ judgments were similar for a juvenile who was perceived to have confessed under coercion and a juvenile who did not confess. In general, these effects were explained by the fact that, compared to a juvenile who was perceived as having confessed voluntarily, a juvenile who was perceived as having confessed under …


Motivation, Need Support And Need Satisfaction In Youth Soccer Players, Erica Lippitt Jan 2012

Motivation, Need Support And Need Satisfaction In Youth Soccer Players, Erica Lippitt

College of Graduate Studies: Theses & Dissertations

Author's abstract: Physical activity levels and obesity rates vary greatly across ethnic groups in the United States (CDC, 2011). One popular way to increase physical activity levels in youth is through youth sport participation, which may be influenced by athlete motivation. Numerous studies have determined motivation levels in youth sport participants, but very little done in comparing levels across different ethnic groups. Identifying differences in motivation levels based on ethnicity can allow coaches and sport administrators to adjust practices and program setups to increase participation and meet needs of player competence. The purpose of the study was to determine if …


Predictors Of Bullying In An Adolescent School Sample, Schell Hufstetler Jan 2012

Predictors Of Bullying In An Adolescent School Sample, Schell Hufstetler

College of Graduate Studies: Theses & Dissertations

Author's abstract: Bullying is a pervasive problem in our society. Contributing to this problem is the fact that bullying is not well understood. This makes it difficult to design successful interventions. The current study aims to create a complete picture of bullying in order to increase understanding of this behavior. For this study, 59 adolescents completed a survey packet including measures of bullying behaviors and other variables expected to relate to bullying. The results revealed that bullying is a problem for both genders. Multivariate analyses revealed males to be more directly and indirectly aggressive, but there were no significant gender …


When Cognitive Bias Masquerades As Intervention Efficacy: Drinking Norms As Anchors And Norm Interventions As Anchoring Effects, Matthew R. Pearson Jan 2012

When Cognitive Bias Masquerades As Intervention Efficacy: Drinking Norms As Anchors And Norm Interventions As Anchoring Effects, Matthew R. Pearson

Psychology Theses & Dissertations

Problematic drinking is a serious public health concern on college campuses in the United States. College students most frequently report drinking for social reasons, and perceptions of peers' drinking, or perceived drinking norms, are among the most consistent, robust predictors of college student drinking. Therefore, norm-based interventions have risen to prominence in the attempt to reduce the harm caused by college student alcohol use. However, the efficacy of these interventions may be obscured by cognitive bias. Specifically, providing information regarding the drinking norm may "anchor" individuals' estimates of their own behavior. Using samples of college student drinkers, two studies were …


Amygdalar Stimulation Produces Alterations On Firing Properties Of Hippocampal Place Cells, Eun Joo Kim, Earnest S. Kim, Mijeong Park, Jeiwon Cho, Jeansok J. Kim Jan 2012

Amygdalar Stimulation Produces Alterations On Firing Properties Of Hippocampal Place Cells, Eun Joo Kim, Earnest S. Kim, Mijeong Park, Jeiwon Cho, Jeansok J. Kim

Faculty Publications - Psychology Department

Stress is a biologically ubiquitous factor that, when perceived uncontrollable by humans and animals, can have lingering adverse effects on brain and cognitive functions. We have previously reported that rats that experienced inescapable-unpredictable stress subsequently exhibited decreased stability of firing rates of place cells in the CA1 hippocampus, accompanied by impairments in CA1 long-term synaptic potentiation and spatial memory consolidation. Because the elevated level of glucocorticoid hormones and the heightened amygdalar activity have been implicated in the emergence of stress effects on the hippocampus, we investigated whether administration of corticosterone and electrical stimulation of the amygdala can produce stress-like alterations …