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  1. Article ; Online: Underlying neural alpha frequency patterns associated with intra-hemispheric inhibition during an interhemispheric transfer task.

    Simon-Dack, Stephanie L / Kraus, Brian / Walter, Zachary / Smith, Shelby / Cadle, Chelsea

    Biological psychology

    2018  Volume 136, Page(s) 39–45

    Abstract: Interhemispheric transfer measured via differences in right- or left-handed motoric responses to lateralized visual stimuli, known as the crossed-uncrossed difference (CUD), is one way of identifying patterns of processing that are vital for ... ...

    Abstract Interhemispheric transfer measured via differences in right- or left-handed motoric responses to lateralized visual stimuli, known as the crossed-uncrossed difference (CUD), is one way of identifying patterns of processing that are vital for understanding the transfer of neural signals. Examination of interhemispheric transfer by means of the CUD is not entirely explained by simple measures of response time. Multiple processes contribute to wide variability observed in CUD reaction times. Prior research has suggested that intra-hemispheric inhibitory processes may be involved in regulation of speed of transfer. Our study examined electroencephalography recordings and time-locked alpha frequency activity while 18 participants responded to lateralized targets during performance of the Poffenberger Paradigm. Our results suggest that there are alpha frequency differences at fronto-central lateral electrodes based on target, hand-of-response, and receiving hemisphere. These findings suggest that early motoric inhibitory mechanisms may help explain the wide range of variability typically seen with the CUD.
    MeSH term(s) Adolescent ; Alpha Rhythm/physiology ; Attention/physiology ; Electrodes, Implanted ; Electroencephalography ; Female ; Functional Laterality/physiology ; Humans ; Male ; Photic Stimulation ; Psychomotor Performance/physiology ; Reaction Time/physiology ; Young Adult
    Language English
    Publishing date 2018-05-18
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 185105-6
    ISSN 1873-6246 ; 0301-0511
    ISSN (online) 1873-6246
    ISSN 0301-0511
    DOI 10.1016/j.biopsycho.2018.05.008
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Neurosciences and adult health behaviors: recent findings and implications for counseling psychology.

    Simon-Dack, Stephanie L / Marmarosh, Cheri L

    Journal of counseling psychology

    2014  Volume 61, Issue 4, Page(s) 528–533

    Abstract: The current review comprehensively examines recent advances in 2 innovative areas of neuroscience research on healthy adults regarding neuropsychosocial interactions on human cognition and behavior, as well as implications for counseling psychologists ... ...

    Abstract The current review comprehensively examines recent advances in 2 innovative areas of neuroscience research on healthy adults regarding neuropsychosocial interactions on human cognition and behavior, as well as implications for counseling psychologists conducting research and in practice. Advances in how oxytocin influences prosocial behavior and the mitigation of social stress, and the influence of environmentally mediated gene expressions on the development of attachment disorders are surveyed and discussed in terms of how counseling psychologists might best integrate recent neuroscience research into a framework for therapeutic intervention.
    MeSH term(s) Adult ; Biomedical Research ; Cognition/physiology ; Counseling ; Epigenesis, Genetic/physiology ; Health Behavior ; Humans ; Neurosciences ; Oxytocin/physiology ; Psychology, Clinical ; Reactive Attachment Disorder/physiopathology ; Reactive Attachment Disorder/psychology ; Reactive Attachment Disorder/therapy ; Social Behavior ; Stress, Psychological/physiopathology ; Stress, Psychological/psychology
    Chemical Substances Oxytocin (50-56-6)
    Language English
    Publishing date 2014-11-19
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 2066555-6
    ISSN 1939-2168 ; 0022-0167
    ISSN (online) 1939-2168
    ISSN 0022-0167
    DOI 10.1037/cou0000020
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Resting EEG and behavioural correlates of interhemispheric transfer times.

    Simon-Dack, Stephanie L / Holtgraves, Thomas / Hernandez, Kristina / Thomas, Christopher

    Laterality

    2015  Volume 20, Issue 5, Page(s) 618–638

    Abstract: Correlations between the relative speeds of left-to-right and right-to-left interhemispheric transfer times and resting quantitative electroencephalography activity were examined in order to determine if variability in interhemispheric transfer was ... ...

    Abstract Correlations between the relative speeds of left-to-right and right-to-left interhemispheric transfer times and resting quantitative electroencephalography activity were examined in order to determine if variability in interhemispheric transfer was related to individual variability in resting neural firing patterns. Resting electroencephalograph frequencies for 32 participants were regressed for 4 frequency bands at 8 different locations calculated for asymmetrical activation through subtracting the left from right average spectral power of each. Participants also completed a series of behavioural tasks that are typically localized to the right hemisphere (RH). Results indicate that the frontal medial average spectral power of the beta band is correlated with the speed of transfer such that larger resting beta values in the right as compared to left location are associated with faster right-to-left interhemispheric transfer times and that larger resting beta values in the left as compared to right location are associated with faster left-to-right interhemispheric transfer times. Furthermore, enhanced performance on tasks typically localized to the RH is correlated with slower right-to-left interhemispheric transfer times, suggesting that the dominance of one hemisphere may come at a cost to interhemispheric communication.
    MeSH term(s) Brain Waves/physiology ; Electroencephalography ; Female ; Functional Laterality/physiology ; Humans ; Male ; Reaction Time/physiology ; Regression Analysis ; Students ; Time Factors ; Transfer (Psychology)/physiology ; Universities
    Language English
    Publishing date 2015
    Publishing country England
    Document type Journal Article ; Research Support, U.S. Gov't, Non-P.H.S.
    ZDB-ID 2028955-8
    ISSN 1464-0678 ; 1357-650X
    ISSN (online) 1464-0678
    ISSN 1357-650X
    DOI 10.1080/1357650X.2015.1032302
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Left hemispheric contributions to temporal perception: a resting electroencephalographic study.

    Hernandez, Kristina O / Woodall, Keisha D / Simon-Dack, Stephanie L

    Neuroreport

    2015  Volume 26, Issue 3, Page(s) 163–166

    Abstract: Beta brain wave frequencies, theta brain wave frequencies, and interhemispheric transfer rates were investigated in individuals to explore components of time perception. Research suggests that the left hemisphere is highly involved in attention and ... ...

    Abstract Beta brain wave frequencies, theta brain wave frequencies, and interhemispheric transfer rates were investigated in individuals to explore components of time perception. Research suggests that the left hemisphere is highly involved in attention and language, which are important components of temporal processing mechanisms. Resting state electroencephalography was used to evaluate the relationship between right and left hemispheric brain wave frequencies and performance on a duration-discrimination task and an interhemispheric transfer rate task. A stepwise multiple regression was used to investigate the absolute spectral power of right minus left hemispheric activation for each frequency (alpha, beta, gamma, theta) at each of eight paired electrode locations onto d' data for a temporal discrimination task. Higher absolute spectral power in parietal and temporal left electrodes was predictive of better performance on the duration-discrimination task. Right-to-left interhemispheric transfer approached a significant correlation with performance on the duration-discrimination task. Our results indicate that sensitivity on a temporal task is positively correlated with beta and theta brain wave frequencies, and negatively correlated with right-to-left interhemispheric transfer rates. The current study provides support for a left hemispheric advantage for temporal processing; this provides further explanation of temporal processing mechanisms and where deficits may occur in clinical populations.
    MeSH term(s) Adolescent ; Brain/physiology ; Brain Waves ; Discrimination (Psychology)/physiology ; Electroencephalography ; Female ; Functional Laterality/physiology ; Humans ; Male ; Neuropsychological Tests ; Regression Analysis ; Rest ; Time Perception/physiology ; Young Adult
    Language English
    Publishing date 2015-02-11
    Publishing country England
    Document type Journal Article ; Research Support, U.S. Gov't, Non-P.H.S.
    ZDB-ID 1049746-8
    ISSN 1473-558X ; 0959-4965
    ISSN (online) 1473-558X
    ISSN 0959-4965
    DOI 10.1097/WNR.0000000000000319
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Factor analysis of five adult ADHD self-report measures: are they all the same?

    Rodriguez, P Dennis / Simon-Dack, Stephanie L

    Journal of attention disorders

    2013  Volume 17, Issue 1, Page(s) 64–69

    Abstract: Objective: To test the assumption in the research and assessment of ADHD symptoms that self-report scales measure the same underlying cognitive construct and that there is convergent validity among the scales. The present study specifically tested this ... ...

    Abstract Objective: To test the assumption in the research and assessment of ADHD symptoms that self-report scales measure the same underlying cognitive construct and that there is convergent validity among the scales. The present study specifically tested this assumption by analyzing the scores of 616 individuals on five ADHD self-rating scales using principal components analysis.
    Method: Participants completed five self-report scales widely used in the clinical and research communities: the CSS, the BADDS, the CAARS, the AADDES, and the WURS.
    Results: Results show that while all scales were highly correlated and loaded onto a single factor solution, the WURS was differentiated from the other four scales best seen through a two factor solution. Therefore, the WURS may also measure other mental and emotional constructs independent from ADHD. Furthermore, participants that reported a previous diagnosis of ADHD scored significantly higher on all measures than those who did not.
    Conclusion: Since these scales are in strong agreement with one another in diagnosing ADHD, assessment becomes an issue of which scale is the least time-consuming and most pragmatic for the evaluator to use.
    MeSH term(s) Adolescent ; Adult ; Aged ; Attention Deficit Disorder with Hyperactivity/diagnosis ; Attention Deficit Disorder with Hyperactivity/psychology ; Factor Analysis, Statistical ; Female ; Humans ; Male ; Middle Aged ; Psychiatric Status Rating Scales ; Psychological Tests/standards ; Reproducibility of Results ; Self Report/standards ; Young Adult
    Language English
    Publishing date 2013-01
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2004350-8
    ISSN 1557-1246 ; 1087-0547
    ISSN (online) 1557-1246
    ISSN 1087-0547
    DOI 10.1177/1087054711423627
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Study Habits, Motives, and Strategies of College Students With Symptoms of ADHD.

    Simon-Dack, Stephanie L / Rodriguez, P Dennis / Marcum, Geoff D

    Journal of attention disorders

    2014  Volume 20, Issue 9, Page(s) 775–781

    Abstract: Objective: Studies on ADHD in educational settings indicate that a student's motivation for learning is significantly related with the student's grade point average. The present study examined the relationship between ADHD symptoms and student academic ... ...

    Abstract Objective: Studies on ADHD in educational settings indicate that a student's motivation for learning is significantly related with the student's grade point average. The present study examined the relationship between ADHD symptoms and student academic achievement by considering the student's approach to and motivation for learning.
    Method: Participants completed a questionnaire that breaks down learning strategies into a surface or deep approach. Each approach is then divided into a deep or surface motivation and strategy.
    Results: A multivariate analysis of variance determined that those in the control group were using the deep approach, whereas those in the ADHD group strongly favored the surface approach. Furthermore, ADHD participants preferred surface motive and surface strategy. A factor analysis of a study-habits questionnaire identified five categories, with collaborative learning approaching significant levels.
    Conclusion: Implications for guiding ADHD college students toward effective study strategies are discussed in light of their preference for surface approach, motive, and strategy.
    MeSH term(s) Achievement ; Adolescent ; Adult ; Attention Deficit Disorder with Hyperactivity/diagnosis ; Attention Deficit Disorder with Hyperactivity/psychology ; Factor Analysis, Statistical ; Female ; Habits ; Humans ; Learning ; Male ; Motivation ; Students/psychology ; Students/statistics & numerical data ; Surveys and Questionnaires ; Young Adult
    Language English
    Publishing date 2014-07-18
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2004350-8
    ISSN 1557-1246 ; 1087-0547
    ISSN (online) 1557-1246
    ISSN 1087-0547
    DOI 10.1177/1087054714543369
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Prenatal and Perinatal Factors Related to Autism, IQ, and Adaptive Functioning.

    Perrone-McGovern, Kristin / Simon-Dack, Stephanie / Niccolai, Lindsay

    The Journal of genetic psychology

    2015  Volume 176, Issue 1-2, Page(s) 1–10

    Abstract: This study focused on prenatal and perinatal factors related to autism spectrum disorder (ASD). The authors hypothesized that mothers who exposed their infants to intrauterine toxicity or who had complications with labor or delivery would be more likely ... ...

    Abstract This study focused on prenatal and perinatal factors related to autism spectrum disorder (ASD). The authors hypothesized that mothers who exposed their infants to intrauterine toxicity or who had complications with labor or delivery would be more likely to give birth to individuals with lower IQ scores, higher scores on a measure of ASD, and lower scores on a measure of adaptive functioning. This clinical sample consisted of 33 children who presented for neuropsychological assessment with symptoms of ASD. Results indicated that individuals with a history of intrauterine toxicity had lower IQ scores than individuals who did not have a history of intrauterine toxicity. However, no significant effects were found for intrauterine toxicity and ASD or adaptive functioning. Results indicated that individuals with a history of complications during labor and delivery had lower IQ scores, higher scores on a measure of ASD, and lower scores on a measure of adaptive functioning. Findings may lend support to the oxidative stress theory of ASD.
    MeSH term(s) Adaptation, Psychological ; Adolescent ; Alcohol Drinking/epidemiology ; Child ; Child Development Disorders, Pervasive/epidemiology ; Child Development Disorders, Pervasive/psychology ; Cocaine-Related Disorders/epidemiology ; Cohort Studies ; Female ; Humans ; Intelligence ; Male ; Marijuana Smoking/epidemiology ; Neuropsychological Tests ; Obstetric Labor Complications/epidemiology ; Pregnancy ; Pregnancy Complications/epidemiology ; Prenatal Exposure Delayed Effects/epidemiology ; Prenatal Exposure Delayed Effects/psychology ; Smoking/epidemiology ; Wechsler Scales
    Language English
    Publishing date 2015-01
    Publishing country United States
    Document type Journal Article
    ZDB-ID 3133-1
    ISSN 1940-0896 ; 0022-1325
    ISSN (online) 1940-0896
    ISSN 0022-1325
    DOI 10.1080/00221325.2014.987201
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Resting electroencephalography correlates of pseudoneglect: an individual differences approach.

    Simon-Dack, Stephanie L / Holtgraves, Thomas / Marsh, Lindsay M / Fogle, Kelly L

    Neuroreport

    2013  Volume 24, Issue 15, Page(s) 827–830

    Abstract: We conducted an exploratory study to examine the resting electroencephalography (EEG) correlates of pseudoneglect, a phenomenon wherein neurologically intact individuals show greater attentional bias toward the left side compared with the right side of ... ...

    Abstract We conducted an exploratory study to examine the resting electroencephalography (EEG) correlates of pseudoneglect, a phenomenon wherein neurologically intact individuals show greater attentional bias toward the left side compared with the right side of space. We took the resting EEG of 21 college students for 5 min and then had them complete a computerized line perception task, during which we asked them to judge the midpoint of horizontal lines on the screen. We computed EEG asymmetry measures for theta, alpha, beta, and gamma frequency bands for each of eight locations (right electrode activity-left electrode activity in the analogous location) and separately regressed these onto the degree of pseudoneglect using stepwise multiple regression analyses. We found significant effects for gamma, theta, and beta bands at location F3/4, indicating greater tonic right midfrontal activation in this location. These findings show that individuals with generally greater right midfrontal resting activation across theta, beta, and gamma bands also demonstrate pseudoneglect during a line perception task. These results lend a novel finding to the pseudoneglect literature, namely an individual differences corollary to current active task observations in the field.
    MeSH term(s) Attention/physiology ; Brain/physiology ; Brain Waves ; Female ; Humans ; Individuality ; Male ; Visual Perception/physiology ; Young Adult
    Language English
    Publishing date 2013-10-23
    Publishing country England
    Document type Journal Article
    ZDB-ID 1049746-8
    ISSN 1473-558X ; 0959-4965
    ISSN (online) 1473-558X
    ISSN 0959-4965
    DOI 10.1097/WNR.0b013e328364125b
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Alpha band frequency differences between low-trait and high-trait anxious individuals.

    Ward, Richard T / Smith, Shelby L / Kraus, Brian T / Allen, Anna V / Moses, Michael A / Simon-Dack, Stephanie L

    Neuroreport

    2015  Volume 29, Issue 2, Page(s) 79–83

    Abstract: Trait anxiety has been shown to cause significant impairments on attentional tasks. Current research has identified alpha band frequency differences between low-trait and high-trait anxious individuals. Here, we further investigated the underlying alpha ... ...

    Abstract Trait anxiety has been shown to cause significant impairments on attentional tasks. Current research has identified alpha band frequency differences between low-trait and high-trait anxious individuals. Here, we further investigated the underlying alpha band frequency differences between low-trait and high-trait anxious individuals during their resting state and the completion of an inhibition executive functioning task. Using human participants and quantitative electroencephalographic recordings, we measured alpha band frequency in individuals both high and low in trait anxiety during their resting state, and while they completed an Eriksen Flanker Task. Results indicated that high-trait anxious individuals exhibit a desynchronization in alpha band frequency from a resting state to when they complete the Eriksen Flanker Task. This suggests that high-trait anxious individuals maintain fewer attentional resources at rest and must martial resources for task performance as compared with low-trait anxious individuals, who appear to maintain stable cognitive resources between rest and task performance. These findings add to the cognitive neuroscience literature surrounding the role of alpha band frequency in low-trait and high-trait anxious individuals.
    MeSH term(s) Alpha Rhythm ; Anxiety/physiopathology ; Anxiety/psychology ; Attention/physiology ; Brain/physiology ; Electroencephalography ; Executive Function/physiology ; Female ; Humans ; Inhibition, Psychological ; Male ; Neuropsychological Tests ; Personality/physiology ; Personality Tests ; Rest ; Young Adult
    Language English
    Publishing date 2015-04-14
    Publishing country England
    Document type Journal Article
    ZDB-ID 1049746-8
    ISSN 1473-558X ; 0959-4965
    ISSN (online) 1473-558X
    ISSN 0959-4965
    DOI 10.1097/WNR.0000000000000915
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Psychophysiology and imaging of visual cortical functions in the blind: a review.

    Simon-Dack, Stephanie L / Rodriguez, P Dennis / Teder-Sälejärvi, Wolfgang A

    Behavioural neurology

    2009  Volume 20, Issue 3, Page(s) 71–81

    Abstract: Imaging, transcranial magnetic stimulation, and psychophysiological recordings of the congenitally blind have confirmed functional activation of the visual cortex but have not extensively explained the functional significance of these activation patterns ...

    Abstract Imaging, transcranial magnetic stimulation, and psychophysiological recordings of the congenitally blind have confirmed functional activation of the visual cortex but have not extensively explained the functional significance of these activation patterns in detail. This review systematically examines research on the role of the visual cortex in processing spatial and non-visual information, highlighting research on individuals with early and late onset blindness. Here, we concentrate on the methods utilized in studying visual cortical activation in early blind participants, including positron emissions tomography (PET), functional magnetic resonance imaging (fMRI), transcranial magnetic stimulation (TMS), and electrophysiological data, specifically event-related potentials (ERPs). This paper summarizes and discusses findings of these studies. We hypothesize how mechanisms of cortical plasticity are expressed in congenitally in comparison to adventitiously blind and short-term visually deprived sighted participants and discuss potential approaches for further investigation of these mechanisms in future research.
    MeSH term(s) Blindness/diagnostic imaging ; Blindness/physiopathology ; Evoked Potentials ; Humans ; Magnetic Resonance Imaging ; Neuronal Plasticity ; Positron-Emission Tomography ; Space Perception ; Transcranial Magnetic Stimulation ; Visual Cortex/diagnostic imaging ; Visual Cortex/physiopathology
    Language English
    Publishing date 2009-07-30
    Publishing country Netherlands
    Document type Journal Article ; Review
    ZDB-ID 1001896-7
    ISSN 1875-8584 ; 0953-4180
    ISSN (online) 1875-8584
    ISSN 0953-4180
    DOI 10.3233/BEN-2008-0217
    Database MEDical Literature Analysis and Retrieval System OnLINE

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