Jennifer L. Stewart

ORCID: 0000-0003-0123-9438
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About
Contact & Profiles
Research Areas
  • Anxiety, Depression, Psychometrics, Treatment, Cognitive Processes
  • Neural and Behavioral Psychology Studies
  • Functional Brain Connectivity Studies
  • Psychosomatic Disorders and Their Treatments
  • Mental Health Research Topics
  • Neurotransmitter Receptor Influence on Behavior
  • Stress Responses and Cortisol
  • Attention Deficit Hyperactivity Disorder
  • Tryptophan and brain disorders
  • Child and Adolescent Psychosocial and Emotional Development
  • Cannabis and Cannabinoid Research
  • Memory and Neural Mechanisms
  • Mental Health and Psychiatry
  • Eating Disorders and Behaviors
  • EEG and Brain-Computer Interfaces
  • Mindfulness and Compassion Interventions
  • Obsessive-Compulsive Spectrum Disorders
  • Heart Rate Variability and Autonomic Control
  • Pain Management and Placebo Effect
  • Substance Abuse Treatment and Outcomes
  • Transcranial Magnetic Stimulation Studies
  • Behavioral Health and Interventions
  • Behavioral and Psychological Studies
  • Forensic Toxicology and Drug Analysis
  • Treatment of Major Depression

Laureate Institute for Brain Research
2019-2025

University of Tulsa
2019-2025

City University of New York
2016-2024

Tulsa Community College
2019-2024

Oxley (United Kingdom)
2020-2024

Hunter College
2024

University of Tennessee at Chattanooga
2023

Alzheimer Society of Canada
2020

Queens College, CUNY
2015-2019

The Graduate Center, CUNY
2016-2019

Recent neurocomputational theories have hypothesized that abnormalities in prior beliefs and/or the precision-weighting of afferent interoceptive signals may facilitate transdiagnostic emergence psychopathology. Specifically, it has been suggested that, certain psychiatric disorders, processing mechanisms either over-weight or under-weight from viscera (or both), leading to a failure accurately update about body. However, this not directly tested empirically. To evaluate potential roles and...

10.1371/journal.pcbi.1008484 article EN cc-by PLoS Computational Biology 2020-12-14

Resting frontal electroencephalographic (EEG) asymmetry has been hypothesized as a marker of risk for major depressive disorder (MDD), but the extant literature is based predominately on female samples. was assessed 4 occasions within 2-week period in 306 individuals aged 18-34 (31% male) with (n = 143) and without 163) lifetime MDD defined by Diagnostic Statistical Manual Mental Disorders, 4th edition (American Psychiatric Association, 1994). Lifetime linked to relatively less left activity...

10.1037/a0019196 article EN Journal of Abnormal Psychology 2010-08-01

Anxiety is characterized by cognitive biases, including attentional bias to emotional (especially threatening) stimuli. Accounts differ on the time course of attention threat, but literature generally confounds valence and arousal overlooks gender effects, both addressed in present study. Nonpatients high self-reported anxious apprehension, arousal, or neither completed an emotion-word Stroop task during event-related potential (ERP) recording. Hypotheses differentiated preferential...

10.1111/j.1469-8986.2009.00926.x article EN Psychophysiology 2009-10-26

Functional MRI (fMRI) was used to examine the relationship between processing of pleasant and unpleasant stimuli activity in prefrontal cortex. Twenty volunteers identified colors which pleasant, neutral, words were printed. Pleasant prompted more bilaterally dorsolateral cortex (DLPFC) than did words. In addition, left right DLPFC. Response speed correlated with DLPFC activity. These data directly link positive affect, enhanced performance, activity, providing some first fMRI evidence...

10.1037/1528-3542.5.2.200 article EN Emotion 2005-06-01

Abstract The capability model of frontal electroencephalographic ( EEG ) asymmetry suggests that brain activity during emotional challenge will be a more powerful indicator predispositions toward psychopathology than observed at rest. data were assessed resting baseline and facial emotion task, wherein individuals with n = 143) without 163) lifetime major depressive disorder MDD made approach (angry happy) withdrawal (afraid sad) expressions. was status for average, C z, linked mastoid...

10.1111/psyp.12191 article EN Psychophysiology 2014-02-26

Abstract Purpose Nonventilator hospital‐acquired pneumonia (NV‐HAP) is an underreported and unstudied disease, with potential for measurable outcomes, fiscal savings, improvement in quality of life. The purpose our study was to (a) identify the incidence NV‐HAP a convenience sample U.S. hospitals (b) determine effectiveness reliably delivered basic oral nursing care reducing NV‐HAP. Design A descriptive, quasi‐experimental using retrospective comparative outcomes enhanced versus usual...

10.1111/jnu.12050 article EN Journal of Nursing Scholarship 2013-09-30

Imbalances in approach-avoidance conflict (AAC) decision-making (e.g., sacrificing rewards to avoid negative outcomes) are considered central multiple psychiatric disorders. We used computational modelling examine 2 factors that often not distinguished descriptive analyses of AAC: decision uncertainty and sensitivity outcomes versus (emotional conflict).A previously validated AAC task was completed by 478 participants, including healthy controls (n = 59), people with substance use disorders...

10.1503/jpn.200032 article EN Journal of Psychiatry and Neuroscience 2021-01-01

The COVID-19 pandemic has brought on far-reaching consequences for adolescents. Adolescents with early life stress (ELS) may be at particular risk. We sought to examine how impacted psychological functioning in a sample of healthy and ELS-exposed adolescents during the pandemic.

10.3389/fped.2021.622608 article EN cc-by Frontiers in Pediatrics 2021-06-08

Abstract This study employed a series of heartbeat perception tasks to assess the hypothesis that cardiac interoceptive processing in individuals with depression/anxiety (N = 221), and substance use disorders 136) is less flexible than healthy 53) context physiological perturbation. Cardiac interoception was assessed via tapping when: (1) guessing allowed; (2) not (3) experiencing an perturbation (inspiratory breath hold) expected amplify sensation. Healthy participants showed performance...

10.1038/s41598-021-81307-3 article EN cc-by Scientific Reports 2021-01-22

Abstract Major depressive disorder (MDD) is associated with interoceptive processing dysfunctions, but the molecular mechanisms underlying this dysfunction are poorly understood. This study combined brain neuronal-enriched extracellular vesicle (NEEV) technology and serum markers of inflammation metabolism Functional Magnetic Resonance Imaging (fMRI) to identify contribution gene regulatory pathways, in particular micro-RNA (miR) 93, MDD. Individuals MDD ( n = 41) healthy comparisons (HC;...

10.1038/s41398-024-02907-x article EN cc-by Translational Psychiatry 2024-04-27

This article provides a selective review of the literature and current theories regarding role prefrontal cortex, along with some other critical brain regions, in emotion motivation. Seemingly contradictory findings have often appeared this literature. Research attempting to resolve these contradictions has been basis new areas growth led more sophisticated understandings emotional motivational processes as well neural networks associated processes. Progress has, part, depended on...

10.1111/j.1751-9004.2007.00064.x article EN Social and Personality Psychology Compass 2008-01-01

Abstract Relatively less right parietal activity may reflect reduced arousal and signify risk for major depressive disorder (MDD). Inconsistent findings with electroencephalographic (EEG) asymmetry, however, suggest issues such as anxiety comorbidity sex differences have yet to be resolved. Resting EEG asymmetry was assessed in 306 individuals (31% male) ( n =143) without =163) a DSM‐IV diagnosis of lifetime MDD no comorbid disorders. Past MDD+ women displayed relatively than current MDD−...

10.1111/j.1469-8986.2010.01035.x article EN Psychophysiology 2010-05-27

To determine if methamphetamine-dependent (MD) individuals exhibit behavioral or neural processing differences in risk-taking relative to healthy comparison participants (CTL).This was a cross-sectional study comparing two groups' behavior on task and as assessed using functional magnetic resonance imaging (fMRI).The conducted an in-patient treatment center research fMRI facility the United States.Sixty-eight recently abstinent MD recruited from program 40 CTL community completed study.The...

10.1111/add.12354 article EN Addiction 2013-09-11
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