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Articles 1 - 30 of 148
Full-Text Articles in Psychology
Potential Applications Of Functional Magnetic Resonance Imaging (Fmri) To Organizational Research: A Primer And Sample Study, Allen I. Huffcutt, Wen-Ching Liu, Lori A. Russell-Chapin
Potential Applications Of Functional Magnetic Resonance Imaging (Fmri) To Organizational Research: A Primer And Sample Study, Allen I. Huffcutt, Wen-Ching Liu, Lori A. Russell-Chapin
Personnel Assessment and Decisions
The first purpose of this manuscript is to provide a primer for organizational researchers on both fMRI and brain physiology because few are likely to have encountered an in-depth treatment of either previously. The second purpose is to present the results of an actual fMRI study on an organizational topic (structured employment interviews) as a sample to help illustrate the potential of this type of research. Results of the sample study enhanced understanding of the brain processes behind responding to situational (SI) and behavior description (BDI) interviews, and offered several promising directions for follow-up research. To illustrate the latter, there …
Exploring The Neural Mechanisms Of Physics Learning, Jessica E. Bartley
Exploring The Neural Mechanisms Of Physics Learning, Jessica E. Bartley
FIU Electronic Theses and Dissertations
This dissertation presents a series of neuroimaging investigations and achievements that strive to deepen and broaden our understanding of human problem solving and physics learning. Neuroscience conceives of dynamic relationships between behavior, experience, and brain structure and function, but how neural changes enable human learning across classroom instruction remains an open question. At the same time, physics is a challenging area of study in which introductory students regularly struggle to achieve success across university instruction. Research and initiatives in neuroeducation promise a new understanding into the interactions between biology and education, including the neural mechanisms of learning and development. These …
Temporal Information Guides Prefrontal Preparatory Activity, Jacqueline R. Janowich
Temporal Information Guides Prefrontal Preparatory Activity, Jacqueline R. Janowich
Shared Knowledge Conference
Proactive preparation for an upcoming goal differs from last-minute reactive adaptation, but it is unclear how preparatory mechanisms change based on when in the future a goal needs to be executed. To assess how timing information is integrated into preparatory control, we designed a novel variant of the Dot Pattern Expectancy task, where each cue signaled both task rule and delay duration (known short, known long, or unknown) between cue and probe. We recorded EEG while healthy young adult participants (n=36) performed this task, and found that delay demands elicited distinct prefrontal preparatory activities. Medial prefrontal amplitude was sensitive to …
The Critical Need For Mental Health Education To Be Mandated In New Mexico's Public Schools, Bonnie L. Murphy
The Critical Need For Mental Health Education To Be Mandated In New Mexico's Public Schools, Bonnie L. Murphy
Shared Knowledge Conference
Based on a review of research and best practices in mental health awareness and skills, this inquiry project argues for state legislative policies that would require mental health awareness and skills in the K-12 curriculum. Mental health affects individual accomplishments in every stage of people’s lives beginning in early childhood and throughout the life cycle. Prevention and treatment of mental illness plays a key role in the ability of an individual to cope with loss and develop resiliency and perseverance in challenging times and to make better decisions that improve the individual’s life and the lives of those around them. …
Are Different Actions Mediated By Distinct Systems Of Knowledge In Infancy?, Peter Vishton
Are Different Actions Mediated By Distinct Systems Of Knowledge In Infancy?, Peter Vishton
Peter Vishton
Developmental Perceptual Impairments: Cases When Tone-Deafness And Prosopagnosia Co-Occur, Sébastien Paquette, Hui C. Li, Sherryse L. Corrow, Stephanie S. Buss, Jason J.S. Barton, Gottfried Schlaug
Developmental Perceptual Impairments: Cases When Tone-Deafness And Prosopagnosia Co-Occur, Sébastien Paquette, Hui C. Li, Sherryse L. Corrow, Stephanie S. Buss, Jason J.S. Barton, Gottfried Schlaug
Psychology Faculty Publications
Studies have shown subtle gray and white matter abnormalities in subjects with several developmental disorders including prosopagnosia, tone-deafness, and dyslexia. Correlational evidence suggests that tone-deafness and dyslexia tend to co-occur, suggesting a link between these two developmental disorders. However, it is not known whether tone-deafness can also be associated with other developmental disorders such as impaired face recognition or prosopagnosia. We addressed this question by assessing face perception abilities in a group of tone-deaf individuals and matched non-tone-deaf subjects. The Cambridge (CFMT) and the Warrington (WRMT) face memory tests were used to assess face processing in the combined group of …
Hearing And Seeing A Speaker: How Perceptual And Cognitive Factors Modulate The Dynamics Of Audiovisual Speech Perception, Elina Kaplan
Hearing And Seeing A Speaker: How Perceptual And Cognitive Factors Modulate The Dynamics Of Audiovisual Speech Perception, Elina Kaplan
Doctoral Dissertations
In face-to-face conversations, listeners process and combine speech information obtained from hearing and seeing the speaker talk. Audiovisual speech typically leads to more robust recognition of speech, as it provides more information for recognition but also as it helps listeners adjust to speaker idiosyncrasies. The goal of the current thesis was to examine how certain perceptual and cognitive factors modulate how listeners use visual speech to facilitate momentary speech perception and to adjust to a speaker’s idiosyncrasies. Results showed that (older) listeners’ sensitivity to cross-modal synchrony is related to the size of the audiovisual interactions during early perceptual processing. Furthermore, …
Does Transcranial Direct Current Stimulation To The Prefrontal Cortex Affect Social Behavior? A Meta-Analysis, Sarah Beth Bell, Nathan Dewall
Does Transcranial Direct Current Stimulation To The Prefrontal Cortex Affect Social Behavior? A Meta-Analysis, Sarah Beth Bell, Nathan Dewall
Psychology Faculty Publications
This meta-analysis (k = 48, N = 2196) examined the effect of transcranial direct current brain stimulation (tDCS) applied to the prefrontal cortex on a variety of social behaviors, including aggression, overeating, impulsivity, bias, honesty, and risk-taking. tDCS showed an overall significant effect on reducing undesirable behaviors, with an average effect size of d = −0.20. tDCS was most effective at reducing risk-taking behavior, bias, and overeating. tDCS did not affect aggression, impulsivity, or dishonesty. We examined moderators such as brain region of interest, online vs offline stimulation, within- vs between-subjects designs, dose, and duration, but none showed significant …
Curcumin Inhibits The Ikk:Nf-Kappa B Pathway In Neural Fear Circuits, Miguel A. Briones
Curcumin Inhibits The Ikk:Nf-Kappa B Pathway In Neural Fear Circuits, Miguel A. Briones
Dissertations, Theses, and Capstone Projects
The study of how the brain acquires fearful memories has attracted considerable experimental attention, due in part to the promise of discovering novel therapeutic approaches for psychiatric disorders that are characterized by unusually strong and persistent traumatic memories. In recent years, extensive research has focused on studying the neural and molecular mechanisms by which fear memories are acquired, stored, and retrieved in the brain. Once acquired, fear memories may be attenuated using one of 2 procedures: 1) fear extinction, which involves repeated presentation of the fear-arousing stimulus in the absence of an aversive consequence, or 2) interference with the reconsolidation …
Dietary Curcumin Promotes Resilience To Chronic Social Defeat Stress In A Highly Susceptible Mouse Strain, Antonio V. Aubry
Dietary Curcumin Promotes Resilience To Chronic Social Defeat Stress In A Highly Susceptible Mouse Strain, Antonio V. Aubry
Dissertations, Theses, and Capstone Projects
Chronic exposure to stress is a risk factor for the development of major depression and post traumatic stress disorder in humans and induces depressive- and anxiety-like phenotypes in rodents. However, there are few pharmacological interventions available that effectively treat maladaptive responses to chronic stress in the clinical setting. One therapeutic agent that has recently shown promise in treating psychiatric disorders is curcumin, a yellow-pigmented polyphenol compound found in the turmeric plant. Curcumin has been shown to prevent the development of stressed-induced depressive-like behavior in rodents and reduce symptoms of depression in clinically diagnosed patients. In this dissertation, I investigated whether …
Underlying Contribution Of Executive Functioning To Cognition And Academic Achievement In Individuals With Dystrophinopathy, Robert Fee
Dissertations, Theses, and Capstone Projects
Dystrophinopathy is a genetic disorder that results in the lack of or abnormal expression of the protein dystrophin. It is a disorder that alters cell structure and function, impacts the developing brain and brain function, presents with multi-domain cognitive deficits, and influences both mood and behavior. Cognitive impairments appear to be more localized to specific areas of functioning rather than a global deficit; however, deficits have been identified across multiple cognitive domains including language and aspects of executive functioning. A careful examination of the cognitive phenotype and its association to mutations affecting CNS isoforms is necessary to clarify the neuropsychological …
The Relationship Between Cognitive And Neural Bases Of Metamemory Judgments, Alexandra M. Gaynor
The Relationship Between Cognitive And Neural Bases Of Metamemory Judgments, Alexandra M. Gaynor
Dissertations, Theses, and Capstone Projects
Metamemory monitoring, the process of making subjective assessments of the status of one’s own memory, is crucial to guiding behavior and effective learning. Past cognitive research has shown that subjective confidence judgments are inferential in nature, and based on cues available at the time of the judgment. When confidence is based on cues that are related to objective memory performance, metamemory accuracy is high. However, past studies have shown that metamemory monitoring tends to be inaccurate because individuals base their confidence on information that is not predictive of memory success, such as the fluency with which items were encoded during …
Characterizing The Cognitive And Emotional Effects Of Delta-9-Tetrahydrocannabinol In Distinct Hippocampal Sub-Regions, Dinat Khan
Electronic Thesis and Dissertation Repository
The objective of this study is to determine the potential differential effects of THC in the DH or VH sub-regions, as well as the upstream effects on PFC neuronal activity and oscillations. Rodents used for electrophysiology were infused with THC or vehicle in the DH or VH regions, combined with PFC recordings. Additionally, a battery of behavioural paradigms was performed. Deficits in short-term memory when THC was infused into both regions was observed, however working memory was impaired with VH infusions only. This could be due to THC-induced dysregulation in the PFC, as beta oscillations were significantly decreased selectively in …
Evaluation Of Neurobiological Risk Factors For Alcohol Consumption; Convergent Evidence For Predispositional Effects Of Brain Volume, David Baranger
Evaluation Of Neurobiological Risk Factors For Alcohol Consumption; Convergent Evidence For Predispositional Effects Of Brain Volume, David Baranger
Arts & Sciences Electronic Theses and Dissertations
Alcohol is one of the most widely used psychoactive substances and accounts for 5% of global disease burden. The goal of the present work is to help advance efforts to both identify prognostic markers of risk, and to understand the mechanisms by which alcohol consumption impacts health. Early life stress is one of the strongest predictors of mental illness, including alcohol dependence, and has been hypothesized to impact risk via modulation of striatal reward functions and reward learning. Studies examined the effect of stress on reward learning and processing, and tested for moderation by genetic and environmental risk. Results were …
Hpa Axis Genetic Variation And Life Stress Influences On Functional Connectivity In Resting State Networks, Tara Ann Miskovich
Hpa Axis Genetic Variation And Life Stress Influences On Functional Connectivity In Resting State Networks, Tara Ann Miskovich
Theses and Dissertations
Stressful or traumatic experiences are a key risk factor for developing psychopathology, primarily through the impact that chronic stress has on hypothalamic-pituitary-adrenal (HPA) axis functioning. The HPA axis regulates the stress response but can become dysregulated with chronic activation and impact brain functioning. In addition to environmental stressors, genetic variation in genes in the HPA axis appear to influence HPA axis functioning and is also related to disruption in brain functioning, particularly in the context of high life stress. The current study focused on examining potential mechanisms through which trauma and stress interacts with HPA axis genes to impact key …
Baked And Buzzed: Investigating The Influence Of Co-Use Of Cannabis And Alcohol On White Matter Integrity In Emerging Adults, Natasha E. Wright
Baked And Buzzed: Investigating The Influence Of Co-Use Of Cannabis And Alcohol On White Matter Integrity In Emerging Adults, Natasha E. Wright
Theses and Dissertations
Objective: Growing evidence suggests alcohol and cannabis use independently alter neural structure and functioning, particularly during sensitive developmental time periods such as adolescence and emerging adulthood. However, there has been minimal investigation into the effects co-occurring use of these two substances, despite preliminary evidence of unique acute and psychopharmacological changes due to using alcohol and cannabis together.
Method: Data drawn from the IDEAA Consortium was utilized to assess white matter integrity as measured by FreeSurfer’s TRACULA in emerging adults (n=192; 16-27 years old). Timeline Follow-Back was used to calculate past month cannabis use, alcohol use, co-use days, binge alcohol episode, …
Abnormal Reward Processing And Visual Selective Attention: An Event-Related Potential Investigation With Remitted Depressed Adults, Kevin Haworth
Abnormal Reward Processing And Visual Selective Attention: An Event-Related Potential Investigation With Remitted Depressed Adults, Kevin Haworth
Theses and Dissertations
Feedback, rewarding and non-rewarding, received from the environment can facilitate learning, influence motivation and shape behavior (Skinner, 1963; Thorndike, 1898). Recent research has indicated that reward can also enhance cognitive processes such as visual selective attention (Anderson, Laurent, & Yantis, 2011a; Anderson, Laurent, & Yantis, 2011b; Della Libera, Perlato, & Chelazzi, 2011; Krebs, Boehler, Egner, & Woldorff, 2011). Depression is one of the most common, debilitating, and costly forms of mental illness (Katon, 1996; Kessler et al., 2005; Mathers, Fat, & Boerma, 2008) and has been characterized by reduced responsiveness to reward (Henriques, Glowacki, & Davidson, 1994; Henriques & Davidson, …
The Effects Of G-Protein-Coupled Estrogen Receptor (Gper) On Cell Signaling, Dendritic Spines, And Memory Consolidation In The Female Mouse Hippocampus, Jae Kyoon Kim
Theses and Dissertations
One of the most seminal findings in the literature on hormones and cognition is that the potent estrogen 17β-estradiol (E2) significantly increases the density of dendritic spines on pyramidal neurons in the CA1 region of the dorsal hippocampus (DH). However, the extent to which this E2-induced increase in hippocampal spinogenesis is necessary for memory formation remains unclear. The memory-enhancing effects of E2 in the DH can be mediated by intracellular estrogen receptors (ERs) or by the membrane-bound ER called G-protein coupled estrogen receptor (GPER). We previously reported that infusion of a GPER agonist, G-1, into the DH of ovariectomized female …
Structural And Functional Brain Connectivity In Middle-Aged Carriers Of Risk Alleles For Alzheimer's Disease, Laura Korthauer
Structural And Functional Brain Connectivity In Middle-Aged Carriers Of Risk Alleles For Alzheimer's Disease, Laura Korthauer
Theses and Dissertations
Single nucleotide polymorphisms (SNPs) in APOE, COMT, BDNF, and KIBRA have been associated with age-related memory performance and executive functioning as well as risk for Alzheimer’s disease (AD). The purpose of the present investigation was to characterize differences in brain functional and structural integrity associated with these SNPs as potential endophenotypes of age-related cognitive decline. I focused my investigation on healthy, cognitively normal middle-aged adults, as disentangling the early effects of healthy versus pathological aging in this group may aid early detection and prevention of AD. The aims of the study were 1) to characterize SNP-related differences in functional connectivity …
Neural Correlates Of Memory Decisions Made In The Face Of Conflict, Elaine Mahoney
Neural Correlates Of Memory Decisions Made In The Face Of Conflict, Elaine Mahoney
Theses and Dissertations
We’ve all experienced moments where, for some reason or another, we don’t want to reveal to others what we truly know. The current experiment investigated questions about the behavioral and neural correlates of these types of memory decisions made in the face of a conflicting goal. Participants in this experiment studied several scene-face pairs and were tested with three-face displays preceded by studied scene cues. They were instructed to indicate whether the three-face display contained the matching associate or not. Critically, half of the participants were instructed to simulate feigned memory impairment (i.e. simulators), while the remainder were instructed to …
Examining The Associative Learning And Accumbal Dopaminergic Mechanisms Of Caffeine Reinforcement, Curtis Bradley
Examining The Associative Learning And Accumbal Dopaminergic Mechanisms Of Caffeine Reinforcement, Curtis Bradley
Electronic Theses and Dissertations
Caffeine is the most consumed psychoactive substance in the world, and most caffeine consumption in coffee and energy drinks is intended to produce a psychoactive effect. However, caffeine is not a primary reinforcer in preclinical paradigms – non-human species do not reliably take the drug to produce a psychoactive effect. However, caffeine is a ‘reinforcement enhancer’ in preclinical models; the effects of caffeine increase the motivation to obtain other non-drug reinforcers. The overall goal of this project was to determine if these reinforcement enhancing effects of caffeine could promote caffeine self-administration and to subsequently investigate the behavioral and neurochemical underpinnings …
Girls’ Internalizing Symptoms And White Matter Tracts In Cortico-Limbic Circuitry, Ola Mohamed Ali
Girls’ Internalizing Symptoms And White Matter Tracts In Cortico-Limbic Circuitry, Ola Mohamed Ali
Electronic Thesis and Dissertation Repository
Dysfunction in cortico-limbic circuitry is implicated in internalizing disorders, but less is known about whether structural abnormalities precede disorder, thus potentially marking risk. I therefore examined associations between white matter tract integrity in cortico-limbic circuitry at age 7, obtained using Diffusion Tensor Imaging, and concurrent and longitudinal patterns of internalizing symptoms, over a 5-year period, in 42 typically developing girls. Using Automated Fiber Quantification, diffusion properties were examined at multiple points along tract length (cf., an average diffusion measure of the entire tract). Concurrent internalizing symptoms were associated with reduced fractional anisotropy in segments of the cingulum bundle and uncinate …
Complexities And Challenges Of Nonduality, Elizabeth Stephens
Complexities And Challenges Of Nonduality, Elizabeth Stephens
CONSCIOUSNESS: Ideas and Research for the Twenty-First Century
States of consciousness referred to as nonduality, awakening, enlightenment, moksha, peak experience, unitive states, or void states, among other terms, have garnered increasing secular attention and have become a topic of psychological and neuroscientific research. A review of the literature revealed many challenges to studying this set of states, such as inconsistent conceptualizations, a variety of models and theories, and conflicting descriptions indicating that the actual experience may not live up to the superlative descriptions found in historical texts or the expectations put forth by nondual teachers. A great deal more empirical research on this topic is needed, and researchers …
The Neural Correlates Of Stereotype Threat And The Stereotype Inoculation Model In Young Women, Chaia Flegenheimer
The Neural Correlates Of Stereotype Threat And The Stereotype Inoculation Model In Young Women, Chaia Flegenheimer
Doctoral Dissertations
A promising intervention technique for stereotype threat effects is the stereotype inoculation model (SIM), which utilizes in-group role models to counteract stereotype-induced pressures. However, it remains unclear how the SIM may impact neural mechanisms during stereotype threat, including negative feedback bias (increased attention to undesirable feedback). The following three studies aim to examine the behavioral (Study 1) and neural (Study 2) markers of ST in women and how these markers are influenced by the SIM (Study 3). In each study, participants completed a non-traditional math task (the approximate number task). In the first two studies, one group was told the …
Effort-Related Motivational Dysfunctions: Behavioral And Neurochemical Studies Of The Wistar-Kyoto Rat Model Of Depression, Brendan Abbott
Effort-Related Motivational Dysfunctions: Behavioral And Neurochemical Studies Of The Wistar-Kyoto Rat Model Of Depression, Brendan Abbott
Masters Theses
Depression and related disorders are characterized by motivational dysfunctions, including deficits in behavioral activation and exertion of effort. Animal models of relevance to depression represent a critical starting point in elucidating the neurobiological mechanisms underlying motivational dysfunctions. The present study explored the use of the Wistar-Kyoto (WKY) animal model of depression to examine effort-related functions as measured by voluntary wheel running and performance on a mixed fixed ratio 5/progressive ratio (FR5/PR) operant task. Given the known link between activational aspects of motivation and the mesocorticolimbic dopamine (DA) system, the behavioral effects of d-amphetamine (0.5 and 1.0 mg/kg, IP), a psychostimulant …
Inactivation Of The Medial-Prefrontal Cortex Impairs Interval Timing Precision, But Not Timing Accuracy Or Scalar Timing In A Peak-Interval Procedure In Rats, Catalin V. Buhusi, Marcelo B. Reyes, Cody-Aaron Gathers, Sorinel A. Oprisan, Mona Buhusi
Inactivation Of The Medial-Prefrontal Cortex Impairs Interval Timing Precision, But Not Timing Accuracy Or Scalar Timing In A Peak-Interval Procedure In Rats, Catalin V. Buhusi, Marcelo B. Reyes, Cody-Aaron Gathers, Sorinel A. Oprisan, Mona Buhusi
Psychology Faculty Publications
Motor sequence learning, planning and execution of goal-directed behaviors, and decision making rely on accurate time estimation and production of durations in the seconds-to-minutes range. The pathways involved in planning and execution of goal-directed behaviors include cortico-striato-thalamo-cortical circuitry modulated by dopaminergic inputs. A critical feature of interval timing is its scalar property, by which the precision of timing is proportional to the timed duration. We examined the role of medial prefrontal cortex (mPFC) in timing by evaluating the effect of its reversible inactivation on timing accuracy, timing precision and scalar timing. Rats were trained to time two durations in a …
Direct Current Stimulation Of Endothelial Monolayers Induces A Transient And Reversible Increase In Transport Due To The Electroosmotic Effect, Limary M. Cancel, Katherin Arias, Marom Bikson, John M. Tarbell
Direct Current Stimulation Of Endothelial Monolayers Induces A Transient And Reversible Increase In Transport Due To The Electroosmotic Effect, Limary M. Cancel, Katherin Arias, Marom Bikson, John M. Tarbell
Publications and Research
We investigated the effects of direct current stimulation (DCS) on fluid and solute transport across endothelial cell (EC) monolayers in vitro. Our motivation was transcranial direct current stimulation (tDCS) that has been investigated for treatment of neuropsychiatric disorders, to enhance neurorehabilitation, and to change cognition in healthy subjects. The mechanisms underlying this diversity of applications remain under investigation. To address the possible role of blood-brain barrier (BBB) changes during tDCS, we applied direct current to cultured EC monolayers in a specially designed chamber that generated spatially uniform direct current. DCS induced fluid and solute movement across EC layers that persisted …
Wearable Assistive Technologies For Autism: Opportunities And Challenges, Emma Mansouri Benssassi, Juan-Carlos Gomez, Louanne E. Boyd, Gillian R. Hayes, Juan Ye
Wearable Assistive Technologies For Autism: Opportunities And Challenges, Emma Mansouri Benssassi, Juan-Carlos Gomez, Louanne E. Boyd, Gillian R. Hayes, Juan Ye
Engineering Faculty Articles and Research
Autism is a lifelong developmental condition that affects how people perceive the world and interact with others. Challenges with typical social engagement, common in the autism experience, can have a significant negative impact on the quality of life of individuals and families living with autism. Recent advances in sensing, intelligent, and interactive technologies can enable new forms of assistive and augmentative technologies to support social interactions. However, researchers have not yet demonstrated effectiveness of these technologies in long-term real-world use. This article presents an overview of the social and sensory challenges of autism, which offer great opportunities and challenges for …
Support For The Precautionary Principle, Jennifer Mather
Support For The Precautionary Principle, Jennifer Mather
Jennifer Mather, PhD
The precautionary principle gives the animal the benefit of the doubt when its sentient status is not known. This is necessary for advanced invertebrates such as cephalopods because research and evidence concerning the criteria for sentience are scattered and often insufficient to give us the background for the decision.
Cephalopods Are Best Candidates For Invertebrate Consciousness, Jennifer A. Mather, Claudio Carere
Cephalopods Are Best Candidates For Invertebrate Consciousness, Jennifer A. Mather, Claudio Carere
Jennifer Mather, PhD
Insects might have been the first invertebrates to evolve sentience, but cephalopods were the first invertebrates to gain scientific recognition for it.