دانلود مقاله ISI انگلیسی شماره 40044
عنوان فارسی مقاله

پاسخ مغز در طول پردازش بصری عاطفی: یک مطالعه از fMRI آلکسیتیمیا

کد مقاله سال انتشار مقاله انگلیسی ترجمه فارسی تعداد کلمات
40044 2013 5 صفحه PDF سفارش دهید محاسبه نشده
خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.
عنوان انگلیسی
Brain response during visual emotional processing: an fMRI study of alexithymia
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : Psychiatry Research: Neuroimaging, Volume 213, Issue 3, 30 September 2013, Pages 225–229

کلمات کلیدی
نارسایی هیجانی - تصویربرداری تشدید مغناطیسی کارکردی - قشر کمربندی قدامی - قشر
پیش نمایش مقاله
پیش نمایش مقاله پاسخ مغز در طول پردازش بصری عاطفی: یک مطالعه از fMRI آلکسیتیمیا

چکیده انگلیسی

Alexithymia is found in up to 10% of the general population and is associated with lower quality of life. Alexithymia is a major risk factor for a range of medical and psychiatric problems. Although a deficit involving the anterior cingulate cortex (ACC) deficit is thought to offer the most promising neurobiological model of alexithymia, current studies have yielded inconsistent findings. In this study, neural activity was investigated in well-controlled alexithymic individuals subjected to emotional stimuli. Fifteen individuals with high Toronto Alexithymia Scale (TAS-20) scores (high-alexithymic group) and 15 individuals with low TAS-20 scores (low-alexithymic group) were screened from 432 female college students. Depressive and anxious behaviors were scored using self-rating depression scale (SDS) and self-rating anxiety scale (SAS) questionnaires, respectively. Emotional stimuli consisted of pictures with positive, negative, or neutral pleasantness and high or low arousal of emotional intensity. Regional cerebral activation was measured by functional magnetic resonance imaging (fMRI). The anterior cingulate, mediofrontal cortices, insula and temporal lobe were significantly activated by intense emotional stimuli (negative or positive pictures) in high-alexithymic individuals compared to low-alexithymic individuals. Conversely, high-alexithymic and low-alexithymic individuals showed similar brain activity when subjected to neutral stimuli. Alexithymia is associated with activation in anterior cingulate and mediofrontal cortices during emotional stimuli processing. Therefore, our findings support the hypothesis that altered ACC function may be implicated in alexithymia.

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