کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
921659 920792 2008 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Anticipation of affect in dysthymia: Behavioral and neurophysiological indicators
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب رفتاری
پیش نمایش صفحه اول مقاله
Anticipation of affect in dysthymia: Behavioral and neurophysiological indicators
چکیده انگلیسی

Anticipation for future affective events and prediction uncertainty were examined in healthy controls and individuals with dysthymia (DYS) using behavioral responses and the contingent negative variation (CNV) and post-imperative negative variation (PINV) event-related potential (ERP) components. Warning stimuli forecasted the valence of subsequently presented adjectives (“+”, positive; “=”, neutral; “−”, negative), and participants indicated whether each adjective would describe them over the next two weeks. Controls expected fewer negative, and individuals with DYS expected fewer positive, adjectives to apply to them. CNV amplitudes were enhanced in controls prior to positive versus other adjectives. Response times and PINV amplitudes were greater following neutral compared to other adjectives, and PINV was larger overall in dysthymics compared to controls. In sum, healthy controls and individuals with DYS exhibit different behavioral and neurophysiological biases in anticipation for future affective events. These results are discussed in the context of cognitive theories of depression.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biological Psychology - Volume 77, Issue 2, February 2008, Pages 197–204
نویسندگان
, , , , , , ,