Cognitive and Neural Responses to Stress in Undergraduates at Risk for Depression: A Midterm Study
Başlık:
Cognitive and Neural Responses to Stress in Undergraduates at Risk for Depression: A Midterm Study
Yazar:
Westbrook, Cecilia, author.
ISBN:
9780438159587
Yazar Ek Girişi:
Fiziksel Tanımlama:
1 electronic resource (133 pages)
Genel Not:
Source: Dissertation Abstracts International, Volume: 79-11(E), Section: B.
Advisors: Richard J. Davidson Committee members: Lyn Y. Abramson; Ryan Herringa; Bradley Postle; Scott Reeder.
Özet:
Depression is a common disorder which causes substantial disability, morbidity and mortality. Existing treatments are limited in efficacy, implying a need for improved understanding of its development. Prior research has supported a diathesis-stress mechanism, in which individuals bearing risk factors will develop depression when exposed to a stressor. However, little work has directly examined the cognitive and neural sequelae of such stressors. Hence, the purpose of this study was to examine cognitive and neural mechanisms in at-risk individuals compared to low-risk individuals following a stressful event. I adapted a well-studied paradigm in which undergraduate students were assessed for risk and then completed cognitive and fMRI testing following a midterm exam, which is a known ecologically-valid stressor. I found that at-risk students demonstrated a performance decrement on a working memory task, as well as differential neural responses in frontal and parietal cortical areas known to support goal-directed and self-referential thought. Notably, these behavioral and neural responses were specific to stimuli related to the midterm exam, rather than negative information, suggesting that at-risk individuals differentially process information relating to recent self-relevant stressors. This novel work indicates that processing of stress-relevant information, which has previously not been well-studied, may comprise an important aspect of the development of depression in at-risk individuals.
Notlar:
School code: 0262
Tüzel Kişi Ek Girişi:
Mevcut:*
Yer Numarası | Demirbaş Numarası | Shelf Location | Lokasyon / Statüsü / İade Tarihi |
---|---|---|---|
XX(687906.1) | 687906-1001 | Proquest E-Tez Koleksiyonu | Arıyor... |
On Order
Liste seç
Bunu varsayılan liste yap.
Öğeler başarıyla eklendi
Öğeler eklenirken hata oldu. Lütfen tekrar deneyiniz.
:
Select An Item
Data usage warning: You will receive one text message for each title you selected.
Standard text messaging rates apply.