Shannon Juengst

University of Pittsburgh, Pittsburgh, PA, United States

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Publications (6)7.75 Total impact

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    ABSTRACT: Objective: To examine the relationship between affective state (positive and negative affect) and depression status among adults with chronic traumatic brain injury (TBI). Research Method: This is a cross-sectional cohort study of community-dwelling adults with chronic TBI (n = 64) that assesses the relationship between affective state (positive and negative affect), using the Positive and Negative Affect Schedule (PANAS), and depression status, categorized as no depression, history of depressive episode, and current depressive episode, using the Primary Care Evaluation of Mental Disorders (PRIME-MD). Results: Affective state differed significantly across depression status groups for both positive affect (F (2, 61) = 5.10, p = .009) and negative affect (F ( 2, 61) = 8.19, p = .001). Participants with no depression reported higher positive affect (M = 35.67, SD = 9.08) than those with a current depressive episode (M = 27.64, SD = 8.59, p = .007) and lower negative affect (M = 14.52, SD = 5.08) than those with a history of a depressive episode (M = 20.21, SD = 5.08, p = .006) and those with a current depressive episode (M = 22.29, SD = 6.21, p = .001). Conclusions: Poor affective state, including both low positive affect and high negative affect, is associated with depression diagnosis. High negative affect is present, even in the absence of a current depressive episode, after TBI. These data highlight the need to assess affective state in addition to screening for mood disorders among adults with chronic TBI. (PsycINFO Database Record (c) 2014 APA, all rights reserved).
    Rehabilitation Psychology 04/2014; · 1.91 Impact Factor
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    ABSTRACT: Juengst S, Skidmore E, Arenth PM, Niyonkuru C, Raina KD. Unique contribution of fatigue to disability in community-dwelling adults with traumatic brain injury. OBJECTIVE: To examine the unique contribution of fatigue to self-reported disability in community-dwelling adults with traumatic brain injury (TBI). DESIGN: A cross-sectional cohort design. SETTING: Community dwellings. PARTICIPANTS: Adults (N=50) with a history of mild to severe TBI were assessed. INTERVENTION: Not applicable. MAIN OUTCOME MEASURES: This study assessed the contribution of fatigue (Modified Fatigue Impact Scale) to disability (Mayo-Portland Adaptability Inventory), controlling for executive functions (Frontal Systems Behavior Scale), depression status (major depression in partial remission/current major depression/depressive symptoms or no history of depression), and initial injury severity (uncomplicated mild, complicated mild, moderate, or severe). RESULTS: Fatigue was found to contribute uniquely to the variance in self-reported disability (β=.47, P<.001) after controlling for injury severity, executive functions, and depression status. The overall model was significant (F(4,45)=17.32, P<.001) and explained 61% of the variance in self-reported disability, with fatigue alone accounting for 12% of the variance in self-reported disability (F(1,45)=13.97, P<.001). CONCLUSIONS: Fatigue contributes uniquely to disability status among community-dwelling adults with chronic TBI, independent of injury severity, executive functions, and depression. Addressing fatigue through targeted interventions may help to improve self-perceived disability in this population.
    Archives of physical medicine and rehabilitation 08/2012; · 2.18 Impact Factor
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    ABSTRACT: To examine the association between self-awareness of cognitive impairment and age, selected mood disorders, and type and severity of cognitive impairment in a sample of individuals with HIV/AIDS and at risk for HIV. 75 subjects, 52 HIV+ and 23 at risk for HIV completed a psychosocial interview, the Patient's Assessment of Own Functioning (PAOF) questionnaire, and a battery of neuropsychological tests. Based upon the differences between their clinical impairment and self-reported impairment, subjects were classified as being "Underestimators", "Good Awareness", or "Impaired Awareness" with regard to self-awareness. Those with more severe cognitive impairment were less aware than those with normal or borderline cognitive impairment. A one-way ANOVA suggested that the Impaired Awareness group differed significantly from the Underestimators on the Rey Figure Immediate and Delayed Recall tasks, and from both the Underestimators and Good Awarenesss groups on the Digit Symbol Substitution Task. There were significant differences among all awareness groups on the test of Simple Reaction Time. Furthermore there is some suggestion that age may contribute to impaired self-awareness. The role of HIV in self-awareness remains unclear, as both, individuals with HIV and at risk, demonstrated impaired self-awareness. Overall, impaired awareness was associated with poorer test performance, suggesting a relationship between awareness and sustained complex attention and visual spatial processing. This research has implications for understanding factors contributing to poor awareness among individuals with cognitive impairment.
    Disability and Rehabilitation 08/2011; 34(1):19-25. · 1.54 Impact Factor
  • Shannon Juengst, Emily Grattan, Elizabeth Skidmore
    Archives of Physical Medicine and Rehabilitation - ARCH PHYS MED REHABIL. 01/2011; 92(10):1698-1699.
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    ABSTRACT: Functional magnetic resonance imaging (fMRI) has revealed much about altered CNS function in HIV/AIDS. In this study, we compared the blood oxygen level dependent hemodynamic response function (BOLD HRF) signal in HIV/AIDS and control subjects as a necessary pre-condition for fMRI studies of higher level cognitive function. Using event-related fMRI, subjects performed a simple sensory-motor activity allowing the measurement of the BOLD HRF in the precentral gyrus. There were no significant differences in the HRF when viewed as a function of age, hemisphere, or HIV serostatus. However, significant results were found after dividing the subjects by NIMH impairment classifications. There were 16 control subjects, 19 Normal/Asymptomatic Neuropsychological Impairment (ANI), and 11 Minor Neurocognitive Disorder (MNCD)/HIV-Associated Dementia (HAD) subjects. The HRF of MNCD/HAD subjects did not return to baseline after 16s, suggesting subtle alterations in neuronal function, which may affect event-related fMRI studies.
    Journal of Neuroscience Methods 08/2007; 163(2):208-12. · 2.11 Impact Factor
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    Shannon B. Juengst