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Medicine and Health Sciences

2006

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Articles 1 - 30 of 112

Full-Text Articles in Psychology

Hormone Effects On Fmri And Cognitive Measures Of Encoding: Importance Of Hormone Preparation, C. E. Gleason, T. W. Schmitz, T. Hess, R. L. Koscik, M. A. Trivedi, M. L. Ries, C. M. Carlsson, M. A. Sager, S. Asthana, S. C. Johnson Dec 2006

Hormone Effects On Fmri And Cognitive Measures Of Encoding: Importance Of Hormone Preparation, C. E. Gleason, T. W. Schmitz, T. Hess, R. L. Koscik, M. A. Trivedi, M. L. Ries, C. M. Carlsson, M. A. Sager, S. Asthana, S. C. Johnson

Brain and Mind Institute Researchers' Publications

We compared fMRI and cognitive data from nine hormone therapy (HT)-naive women with data from women exposed to either opposed conjugated equine estrogens (CEE) (n = 10) or opposed estradiol (n = 4). Exposure to either form of HT was associated with healthier fMRI response; however, CEE-exposed women exhibited poorer memory performance than either HT-naive or estradiol-exposed subjects. These preliminary findings emphasize the need to characterize differential neural effects of various HTs. ©2006AAN Enterprises, Inc.


An Overview Of The Near-Death Experience Phenomenon, David San Filippo Ph.D. Dec 2006

An Overview Of The Near-Death Experience Phenomenon, David San Filippo Ph.D.

Faculty Publications

Near-death experiences appear to be universal phenomena that have been reported for centuries. A near-death encounter is defined as an event in which the individual could very easily die or be killed, or may have already been considered clinically dead, but nonetheless survives, and continue his or her physical life. Reports of near-death experiences date back to the Ice Age. There are cave paintings, in France and Spain that depict possible after life scenes that are similar to reported scenes related to near-death experiences. Plato's Republic presents the story of a near-death experience of a Greek soldier named Er. In …


Differential Effects Of Stimulus Context In Sensory Processing: Effets Différentiels Du Contexte De Présentation Des Stimuli Sur Les Processus Perceptifs, Yoav Arieh, Lawrence E. Marks Dec 2006

Differential Effects Of Stimulus Context In Sensory Processing: Effets Différentiels Du Contexte De Présentation Des Stimuli Sur Les Processus Perceptifs, Yoav Arieh, Lawrence E. Marks

Department of Psychology Faculty Scholarship and Creative Works

Stimulus contexts in which different intensity levels are presented to two sensory–perceptual channels can produce differential effects on perception: Perceived magnitudes are depressed in whichever channel received the stronger stimuli. Context differentially can affect loudness at different sound frequencies or perceived length of lines in different spatial orientations. Reported in the hearing, vision, haptic touch, taste, and olfaction, differential context effects (DCEs) are a general property of perceptual processing. Characterizing their functional properties and determining their underlying mechanisms are essential both to fully understanding sensory and perceptual processes and to properly interpreting sensory measurements obtained in applied as well …


Paved With Good Intentions: A Definitional Study On The Issue Of Psychological Child Abuse, Anita Renee Fromm Dec 2006

Paved With Good Intentions: A Definitional Study On The Issue Of Psychological Child Abuse, Anita Renee Fromm

Student Dissertations & Theses

Definitional issues concerning child abuse have long plagued the identification and treatment of this malady. This study examined the role of perpetrator intention in categorizing adverse parenting skills, as well as psychological child abuse potential. Exploitative parenting styles were displayed and rated in a variety of vignettes. Social service professionals and university students were participants in this vignette style questionnaire study. Results indicated that with a few exceptions, a constant perpetrator intention did not appear to alter subject perceptions that the scenarios presented adverse parenting skills and child abuse potential. The participants were indecisive concerning scenarios that represented excessive athletic …


The Aggression Questionnaire As An Indicator Of Anger Expression By Abused Women In Therapy, Audrey Steakley Dec 2006

The Aggression Questionnaire As An Indicator Of Anger Expression By Abused Women In Therapy, Audrey Steakley

Student Dissertations & Theses

The present study examined whether adult women in therapy who have been physically abused express anger differently than their counterparts who have been sexually abused, and whether they are aware that they express anger in noticeable ways. The first hypothesis stated that physically abused women express anger directly and physically, whereas sexually abused women express anger indirectly, avoiding direct confrontation. The second hypothesis proposed that they are not aware how much they express their anger outwardly. Participants were female clients at a local counseling agency, with issues stemming from physical and/or sexual abuse. They voluntarily completed the Aggression Questionnaire (AQ) …


An Overview Of The Near-Death Experience Phenomenon, David San Filippo Ph.D. Dec 2006

An Overview Of The Near-Death Experience Phenomenon, David San Filippo Ph.D.

David San Filippo Ph.D.

Near-death experiences appear to be universal phenomena that have been reported for centuries. A near-death encounter is defined as an event in which the individual could very easily die or be killed, or may have already been considered clinically dead, but nonetheless survives, and continue his or her physical life. Reports of near-death experiences date back to the Ice Age. There are cave paintings, in France and Spain that depict possible after life scenes that are similar to reported scenes related to near-death experiences. Plato's Republic presents the story of a near-death experience of a Greek soldier named Er. In …


Behaviorally-Based Disorders: The Historical Social Construction Of Youths' Most Prevalent Psychiatric Diagnoses, Christopher A. Mallett Dec 2006

Behaviorally-Based Disorders: The Historical Social Construction Of Youths' Most Prevalent Psychiatric Diagnoses, Christopher A. Mallett

Social Work Faculty Publications

The article discusses the historical social construction of the most prevalent diagnosis of youth in the U.S. The country's psychiatry controls the definitions of mental health disorders and diagnosis through required practice utilization of the Diagnostic and Statistical Manual of Mental Disorders. A research is conducted through a social construction theoretical paradigm to identify diagnostic classification systems, nosology changes, and critical time periods.


A Delphi Survey Of Experts’ Opinions Regarding Prevention Of Impairment In Professional Psychology Training, Kin-Ming Chan Dec 2006

A Delphi Survey Of Experts’ Opinions Regarding Prevention Of Impairment In Professional Psychology Training, Kin-Ming Chan

Dissertations

This study sought to identify the most important measures that may be implemented in professional psychology training to prevent the future impairment of professionals. An adjunctive research question of this study addressed how these important measures can be successfully implemented. A 2-round Delphi method was conducted. Twenty-eight experts in impairment prevention participated in the first round study, and 20 of them continued to participate in the second round. In the first round, the experts rated the importance of an original list of 38 preventive measures, suggested additional important preventive measures, and provided considerations for successful implementation of their most important …


Patient Handling Safety For Nursing Staff, Don Nielsen Dec 2006

Patient Handling Safety For Nursing Staff, Don Nielsen

Dissertations

The effectiveness of video scoring and feedback about the scoring of the components of safe patient transfers was observed among eight nursing staff members in a skilled nursing department within an acute care hospital.

An ABCA (and sometimes ABCDA), multiple baseline across individuals design was utilized in the study. The dependent variable under investigation was the percentage of safe lifting components. Following baseline measures, nursing staff participated in an information phase during which they reviewed and discussed components of safe patient transfers. A video scoring phase was introduced, during which, participants viewed and scored a model video of a patienttransfer. …


Activation Of Brain Regions Vulnerable To Alzheimer's Disease: The Effect Of Mild Cognitive Impairment, S. C. Johnson, T. W. Schmitz, C. H. Moritz, M. E. Meyerand, H. A. Rowley, A. L. Alexander, K. W. Hansen, C. E. Gleason, C. M. Carlsson, M. L. Ries, S. Asthana, K. Chen, E. M. Reiman, G. E. Alexander Nov 2006

Activation Of Brain Regions Vulnerable To Alzheimer's Disease: The Effect Of Mild Cognitive Impairment, S. C. Johnson, T. W. Schmitz, C. H. Moritz, M. E. Meyerand, H. A. Rowley, A. L. Alexander, K. W. Hansen, C. E. Gleason, C. M. Carlsson, M. L. Ries, S. Asthana, K. Chen, E. M. Reiman, G. E. Alexander

Brain and Mind Institute Researchers' Publications

This study examined the functionality of the medial temporal lobe (MTL) and posterior cingulate (PC) in mild cognitive impairment amnestic type (MCI), a syndrome that puts patients at greater risk for developing Alzheimer disease (AD). Functional MRI (fMRI) was used to identify regions normally active during encoding of novel items and recognition of previously learned items in a reference group of 77 healthy young and middle-aged adults. The pattern of activation in this group guided further comparisons between 14 MCI subjects and 14 age-matched controls. The MCI patients exhibited less activity in the PC during recognition of previously learned items, …


Self-Mutilation In Adolescents: Recognizing A Silent Epidemic, Constance Glenn, Susan M. Denisco Nov 2006

Self-Mutilation In Adolescents: Recognizing A Silent Epidemic, Constance Glenn, Susan M. Denisco

Nursing Faculty Publications

This article describes the physical and emotional manifestations of self-mutilation behavior (SMB) in adolescents and provides information about diagnosis and treatment. The authors' own survey of school nurses' on-the-job experience with SMB is presented. Finally, the implications of the problem for nurse practitioners (NPs) who care for teens at risk for SMB are discussed.


Parental Involvement In Youth Sports, Kristin Leigh Greene Nov 2006

Parental Involvement In Youth Sports, Kristin Leigh Greene

UNLV Theses, Dissertations, Professional Papers, and Capstones

The purpose of this paper is to understanding the motivating factors pertaining to the involvement of youth in sport and how parents can assist in providing their children optimal sport experiences. The paper will begin by providing a background of youth sport involvement, and include the benefits and drawbacks of youth sport participation. To ensure that young athletes are positively motivated toward sport participation, it is important to understand their reasons for participation, as well as how others, such as parents, impact their motivation toward sport. This paper will address a number of motivational theories. Deci and Ryan's cognitive evaluation …


Stress, Coping, Social Support, And Prostate Cancer Risk Among Older African American And Caucasian Men, Ann L. Coker, Maureen Sanderson, Gary L. Ellison, Mary Kay Fadden Oct 2006

Stress, Coping, Social Support, And Prostate Cancer Risk Among Older African American And Caucasian Men, Ann L. Coker, Maureen Sanderson, Gary L. Ellison, Mary Kay Fadden

CRVAW Faculty Journal Articles

Objectives: While psychosocial stress and high effort coping have been associated with reduced immune function, no epidemiologic study has addressed psychological stress and risk of prostate cancer. The purpose of this analysis was to investigate the association between stress, coping, social support, and risk of prostate cancer among older men (age 65–79 years). Design: Population-based case-control study in South Carolina.

Participants: Cases were 400 incident, histologically confirmed prostate cancer cases identified through the South Carolina Central Cancer Registry between 1999 and 2001 (70.6% response rate). Controls were 385 men identified through the 1999 Health Care Financing Administration Medicare beneficiary file …


The Locomotor Kinematics Of Asian And African Elephants: Changes With Speed And Size, John R. Hutchinson, Delf Schwerda, Daniel J. Famini, Robert H.I. Dale, Martin S. Fischer, Rodger Kram Oct 2006

The Locomotor Kinematics Of Asian And African Elephants: Changes With Speed And Size, John R. Hutchinson, Delf Schwerda, Daniel J. Famini, Robert H.I. Dale, Martin S. Fischer, Rodger Kram

Scholarship and Professional Work - LAS

For centuries, elephant locomotion has been a contentious and confusing challenge for locomotion scientists to understand, not only because of technical difficulties but also because elephant locomotion is in some ways atypical of more familiar quadrupedal gaits. We analyzed the locomotor kinematics of over 2400 strides from 14 African and 48 Asian elephant individuals (body mass 116-4632 kg) freely moving over ground at a 17-fold range of speeds, from slow walking at 0.40 m s-1 to the fastest reliably recorded speed for elephants, 6.8 m s-1. These data reveal that African and Asian elephants have some subtle …


Determinants Of Physical Activity In An Inclusive Setting, Stephen Kodish, Pamela Hodges Kulinna, Jeffrey J. Martin, Robert Pangrazi, Paul Darst Oct 2006

Determinants Of Physical Activity In An Inclusive Setting, Stephen Kodish, Pamela Hodges Kulinna, Jeffrey J. Martin, Robert Pangrazi, Paul Darst

Kinesiology, Health and Sport Studies

The purposes of this study included (a) to determine if the Theory of Planned Behavior (TPB) predicted intentions of individuals with and without disabilities to be physically active, (b) to determine if the TPB predicted behaviors of individuals with and without disabilities to be physically active, and (c) to determine if significant differences were present in physical activity opportunities between inclusive and non-inclusive elementary physical education classes taught by the same teacher. Students (N = 114, ages 10-13) completed questionnaires assessing the TPB constructs and had four days of PA evaluated through pedometer measurements. Analyses revealed that subjective norm …


Six-To-One Gets The Job Done: Comments On The Reviews, W. Joseph Wyatt, Donna M. Midkiff Oct 2006

Six-To-One Gets The Job Done: Comments On The Reviews, W. Joseph Wyatt, Donna M. Midkiff

Psychology Faculty Research

We are pleased to note that six of the seven responses to our article were marked by approval, and/or thoughtful contemplation, regarding our central theses—that the research said to support biological causation of mental disorders is relatively weak, and that the claims of drug effectiveness are often overstated.


Biological Psychiatry: A Practice In Search Of A Science, W. Joseph Wyatt, Donna M. Midkiff Oct 2006

Biological Psychiatry: A Practice In Search Of A Science, W. Joseph Wyatt, Donna M. Midkiff

Psychology Faculty Research

The rise of the biological causation model in the past thirty years is traced to psychiatry’s efforts to regain lost status and to protect itself from intrusions by non-medical practitioners, as well as to the pharmaceutical industry’s drive for profits. Evidence in support of the model, including studies of identical twins and of brain structure and function, are less revealing than was earlier thought, due to problems in methodology and interpretation. Organized psychiatry, when challenged in 2003, was unable to provide compelling evidence for biological causation of most mental and behavioral disorders. A paradigm shift away from biological causation and …


Expanded School-Based Health: The Mental Health And School Connection, Dr. Jill D. Duba Oct 2006

Expanded School-Based Health: The Mental Health And School Connection, Dr. Jill D. Duba

Counseling & Student Affairs Faculty Publications

Research suggests that expanded school-based mental health (ESMH) programs can offer benefits and hope for children and their families. Such programs are part of a national progressive movement involving collaborative relationships between schools and community mental health agencies. The purpose of this article is to highlight the constructs and details of ESMH programs, as well as counselor training possibilities.


Integrative Multilevel Family Therapy For Disputes Involving Child Custody And Visitation (Imft-Dccv): An Interview With Jay Lebow, Dr. Jill D. Duba Oct 2006

Integrative Multilevel Family Therapy For Disputes Involving Child Custody And Visitation (Imft-Dccv): An Interview With Jay Lebow, Dr. Jill D. Duba

Counseling & Student Affairs Faculty Publications

This article presents the integrative multi-level family therapy of Jay Lebow, focusing on his work in resolving disputes involving child custody and visitation. The interview addresses interventions in high conflict divorces, assessment issues, and symmetrical escalation. A case study is offered.


Structural Mri Discriminates Individuals With Mild Cognitive Impairment From Age-Matched Controls: A Combined Neuropsychological And Voxel Based Morphometry Study, Mehul A. Trivedi, Allison K. Wichmann, Britta M. Torgerson, Michael A. Ward, Taylor W. Schmitz, Michele L. Ries, Rebecca L. Koscik, Sanjay Asthana, Sterling C. Johnson Oct 2006

Structural Mri Discriminates Individuals With Mild Cognitive Impairment From Age-Matched Controls: A Combined Neuropsychological And Voxel Based Morphometry Study, Mehul A. Trivedi, Allison K. Wichmann, Britta M. Torgerson, Michael A. Ward, Taylor W. Schmitz, Michele L. Ries, Rebecca L. Koscik, Sanjay Asthana, Sterling C. Johnson

Brain and Mind Institute Researchers' Publications

Background: Several previous studies have reported that amnestic mild cognitive impairment (aMCI), a significant risk factor for Alzheimer's disease (AD), is associated with greater atrophy in the medial temporal lobe (MTL) and posterior cingulate gyrus (PCG). Method: In the present study, we examined the cross-sectional accuracy (i.e., the sensitivity and specificity) of voxel-based morphometry (VBM) in discriminating individuals with MCI (n = 15) from healthy age-matched controls (n = 15). In addition, we also sought to determine whether baseline GM volume predicted aMCI patients that converted to AD from those that did not approximately 2 years after the baseline visit. …


Age-Related Functional Recruitment During The Recognition Of Famous Names: An Event-Related Fmri Study, Kristy Nielson, K Douville, M Seidenberg, J Woodard, S Miller, P Antuono, M Franczak, S Rao Sep 2006

Age-Related Functional Recruitment During The Recognition Of Famous Names: An Event-Related Fmri Study, Kristy Nielson, K Douville, M Seidenberg, J Woodard, S Miller, P Antuono, M Franczak, S Rao

Kristy Nielson

Recent neuroimaging research shows that older adults exhibit recruitment, or increased activation on various cognitive tasks. The current study evaluated whether a similar pattern also occurs in semantic memory by evaluating age-related differences during recognition of Recent (since the 1990s) and Enduring (1950s to present) famous names. Fifteen healthy older and 15 healthy younger adults performed the name recognition task with a high and comparable degree of accuracy, although older adults had slower reaction time in response to Recent famous names. Event-related functional MRI showed extensive networks of activation in the two groups including posterior cingulate, right hippocampus, temporal lobe …


Girls' Perception Of Physical Environmental Factors And Transportation: Reliability And Association With Physical Activity And Active Transport To School, Kelly R. Evenson, Amanda Birnbaum, Ariane L. Bedimo-Rung, James Sallis, Carolyn C. Voorhees, Kimberly Ring, John P. Elder Sep 2006

Girls' Perception Of Physical Environmental Factors And Transportation: Reliability And Association With Physical Activity And Active Transport To School, Kelly R. Evenson, Amanda Birnbaum, Ariane L. Bedimo-Rung, James Sallis, Carolyn C. Voorhees, Kimberly Ring, John P. Elder

Department of Public Health Scholarship and Creative Works

Background

Preliminary evidence suggests that the physical environment and transportation are associated with youth physical activity levels. Only a few studies have examined the association of physical environmental factors on walking and bicycling to school. Therefore, the purpose of this study was (1) to examine the test-retest reliability of a survey designed for youth to assess perceptions of physical environmental factors (e.g. safety, aesthetics, facilities near the home) and transportation, and (2) to describe the associations of these perceptions with both physical activity and active transport to school.

Methods

Test and retest surveys, administered a median of 12 days later, …


Paradoxical Facilitation Of Object Recognition Memory After Infusion Of Scopolamine Into Perirhinal Cortex: Implications For Cholinergic System Function., Boyer D Winters, Lisa M Saksida, Timothy J Bussey Sep 2006

Paradoxical Facilitation Of Object Recognition Memory After Infusion Of Scopolamine Into Perirhinal Cortex: Implications For Cholinergic System Function., Boyer D Winters, Lisa M Saksida, Timothy J Bussey

Brain and Mind Institute Researchers' Publications

The cholinergic system has long been implicated in learning and memory, yet its specific function remains unclear. In the present study, we investigated the role of cortical acetylcholine in a rodent model of declarative memory by infusing the cholinergic muscarinic receptor antagonist scopolamine into the rat perirhinal cortex during different stages (encoding, storage/consolidation, and retrieval) of the spontaneous object recognition task. Presample infusions of scopolamine significantly impaired object recognition compared with performance of the same group of rats on saline trials; this result is consistent with previous reports supporting a role for perirhinal acetylcholine in object information acquisition. Scopolamine infusions …


Design And Implementation Of The Domestic Violence Services In Rural Clinics Intervention, Ann L. Coker, Paige H. Smith, Vicki C. Flerx, Daniel J. Whitaker, Mary Kay Fadden, Melinda Williams Sep 2006

Design And Implementation Of The Domestic Violence Services In Rural Clinics Intervention, Ann L. Coker, Paige H. Smith, Vicki C. Flerx, Daniel J. Whitaker, Mary Kay Fadden, Melinda Williams

CRVAW Faculty Book Chapters

No abstract provided.


Demographic Change And Response: Social Context And The Practice Of Birth Control In Six Countries, Sangeeta Parashar, Harriet B. Presser, Megan L. Klein Hattori, Sara Raley, Zhihong Sa Sep 2006

Demographic Change And Response: Social Context And The Practice Of Birth Control In Six Countries, Sangeeta Parashar, Harriet B. Presser, Megan L. Klein Hattori, Sara Raley, Zhihong Sa

Department of Sociology Faculty Scholarship and Creative Works

This paper expands on Kingsley Davis’s demographic thesis of change and re- sponse. Specifically, we consider the social context that accounts for the primacy of particular birth control methods that bring about fertility change during specific time periods. We examine the relevance of state policy (including national family planning programs), the international population establishment, the medical profession, organized religion, and women’s groups using case studies from Japan, Russia, Puerto Rico, China, India, and Cameroon. Some of these countries are undergoing the second demographic transition, others the first. Despite variations in context, heavy reliance on sterilization and/or abortion as a means …


The Effects Of Prolonged Job Insecurity On The Psychological Well-Being Of Workers, Cynthia Rocha, Jennifer Hause Crowell, Andrea K. Mccarter Sep 2006

The Effects Of Prolonged Job Insecurity On The Psychological Well-Being Of Workers, Cynthia Rocha, Jennifer Hause Crowell, Andrea K. Mccarter

The Journal of Sociology & Social Welfare

Job insecurity has been increasing since the 1980s. While researchers have found job insecurity to be negatively associated with multiple indicators of well-being for workers and their families in cross sectional studies, less is known about the long term effects of prolonged job insecurity. Specifically, there is a need to collect measures of both insecurity and its consequences at multiple time periods. The current study followed workers for 3 1/2 years to assess the effects of chronic job insecurity on psychological distress. Results indicate that while workers reported increased feelings of security over time, there were longer term negative effects …


Evaluation Of Program Outcomes: Assessment In Children, Cheryl M. Romano Sep 2006

Evaluation Of Program Outcomes: Assessment In Children, Cheryl M. Romano

Loma Linda University Electronic Theses, Dissertations & Projects

In an age of increased concern for accountability and the review of services, administrators of health programs should be able to present their clinics effectiveness, and demonstrate their excellent service to the community, along with providing evidence for the continued need of such clinics. Outcome evaluation plays an integral part in providing this information, and is intended to provide information concerning the effectiveness of a particular program, thus allowing for modification, and even better outcomes.

This project addressed pre and post functioning in children referred for academic and/or behavioral difficulties, in a university of health sciences-based clinic. The aim was …


Visual Adaptation To Masculine And Feminine Faces Influences Generalized Preferences And Perceptions Of Trustworthiness, Gavin Buckingham, Lisa Debruine, Anthony Little, Lisa Welling, Claire Conway, Bernard Tiddeman, Benedict Jones Aug 2006

Visual Adaptation To Masculine And Feminine Faces Influences Generalized Preferences And Perceptions Of Trustworthiness, Gavin Buckingham, Lisa Debruine, Anthony Little, Lisa Welling, Claire Conway, Bernard Tiddeman, Benedict Jones

Gavin Buckingham

Although previous studies of individual differences in preferences for masculinity in male faces have typically emphasized the importance of factors such as changes in levels of sex hormones during the menstrual cycle, other research has demonstrated that recent visual experience with faces also influences preferences for sexual dimorphism in faces. Adaptation to either masculine or feminine faces increases preferences for novel faces that are similar to those that were recently seen. Here, we replicate this effect and demonstrate that adaptation to masculine or feminine faces also influences the extent to which masculine faces are perceived as trustworthy. These adaptation effects …


Beliefs About Essences And The Reality Of Mental Disorders, Woo-Kyoung Ahn, Elizabeth H. Flanagan, Jessecae K. Marsh, Charles A. Sanislow Aug 2006

Beliefs About Essences And The Reality Of Mental Disorders, Woo-Kyoung Ahn, Elizabeth H. Flanagan, Jessecae K. Marsh, Charles A. Sanislow

Charles A. Sanislow, Ph.D.

Do people believe mental disorders are real and possess underlying essences? The current study found that both novices and practicing clinicians held weaker essentialist beliefs about mental disorders than about medical disorders. They were also unwilling to endorse the idea that mental disorders are real and natural. Furthermore, compared with novices, mental health clinicians were less likely to endorse the view that there is a shared cause underlying a mental disorder and that one needs to remove the cause to get rid of the mental disorder. Clinicians were polarized on their views about whether mental disorders are categorical or dimensional. …


Age And Physical Activity Influences On Action Monitoring During Task Switching, Jason R. Themanson, Charles H. Hillman, John J. Curtin Aug 2006

Age And Physical Activity Influences On Action Monitoring During Task Switching, Jason R. Themanson, Charles H. Hillman, John J. Curtin

Jason R. Themanson, Ph.D

Behavioral and neuroelectric indices of action monitoring were compared for 53 high and low physically active older (60–71 years) and younger (18–21 years) adults during a task-switching paradigm in which they performed a task repeatedly or switched between two different tasks. The error-related negativity (ERN) of a response-locked event-related brain potential (ERP) and behavioral measures of response speed and accuracy were measured during the heterogeneous condition (switching randomly between two tasks) of the switch task. Results indicated that older adults exhibited a greater relative slowing in RT during heterogeneous blocks and smaller ERN amplitude compared to younger adults. Additionally, physical …