Open Access. Powered by Scholars. Published by Universities.®
- Discipline
- Institution
Articles 1 - 4 of 4
Full-Text Articles in Biological Psychology
Reactivity And Recovery Among Oif/Oef/Ond Combat Veterans: Do Those With Subthreshold Ptsd Differ From Veterans With And Without Ptsd?, Paula Castro-Chapman
Reactivity And Recovery Among Oif/Oef/Ond Combat Veterans: Do Those With Subthreshold Ptsd Differ From Veterans With And Without Ptsd?, Paula Castro-Chapman
USF Tampa Graduate Theses and Dissertations
This study expanded the current literature by assessing PTSD in relation to reactivity and recovery from negative emotional arousal among OEF/OIF/OND Veterans. Cardiac impedance was employed during a speech task and a trauma imagery procedure. Those in the PTSD-S group displayed lower SBP and higher TPR reactivity relative to the PTSD- and PTSD+ groups; lower CO reactivity relative to the PTSD+ group; and more CO recovery than those in the PTSD+ group to the trauma task. For speech task, Veterans in the PTSD-S group exhibited lower HR reactivity for both speech preparation and delivery than those in the PTSD- group. …
Working Memory Impairments In Chromosome 22q11.2 Deletion Syndrome: The Roles Of Anxiety And Stress Physiology, Ashley F. P. Sanders
Working Memory Impairments In Chromosome 22q11.2 Deletion Syndrome: The Roles Of Anxiety And Stress Physiology, Ashley F. P. Sanders
University of New Orleans Theses and Dissertations
Stress and anxiety negatively impact the working memory system by competing for executive resources. Broad memory deficits have been reported in individuals with chromosome 22q11.2 deletion syndrome (22q11.2DS). We investigated anxiety and physiological stress reactivity in relation to visuospatial working memory impairments in 20 children with 22q11.2DS and 32 typically developing children (M = 11.10 years, SD = 2.95). Results indicate reduced post-stress RSA recovery and overall increased levels of cortisol in children with 22q11.2DS. Additionally, anxiety mediated the relationship between 22q11.2DS and visuospatial working memory impairment. However, there was no indication that stress response physiology mediated this association. …
Analgesia Followed By Long-Term Hyperalgesia Generated By Disinhibition Of The Basolateral Amygdala, Derek Atchley
Analgesia Followed By Long-Term Hyperalgesia Generated By Disinhibition Of The Basolateral Amygdala, Derek Atchley
Wayne State University Theses
Stress produces bimodal effects on pain peception. During exposure to a stressor pain responses are inibited (i.e. stress-induced analgesia). However, following long-term exposure to a stressor increases in responsiveness to painful stimuli may develop (i.e. stress-induced hyperalgesia). Here I evaluated how a key component of the subcortical defense circuit and target of stress hormones contributes to the development of both stress-induced analgesia and hyperalgesia. Bicuculline methiodide, a GABAA antagonist, injected into the basolateral amygdala was used to mimic the neural effects of a stressor or threat exposure. Immediately following injection pain responsiveness was decreased as measured by vocalizations after discharge …
Understanding Mental Toughness And Stress: The Role Of Cortisol, Alexis K. Satterwhite Ms.
Understanding Mental Toughness And Stress: The Role Of Cortisol, Alexis K. Satterwhite Ms.
Honors Program Theses
Mental toughness research aims to understand how two people of the same skill level, experience, and background react to pressure and stress, with one succumbing to the pressure while another succeeds (Clough & Strycharczyk, 2012). This study used Clough, Earle, and Sewell’s (2002) four C’s of mental toughness (commitment, challenge, control, and confidence) as a theoretical framework. The current study aims to explore physiological aspects of mental toughness through cortisol, a stress hormone that is released as an internal reaction to some type of threat occurring externally to the body (Kottler & Chen, 2011). The relationships between mental toughness and …