دانلود مقاله ISI انگلیسی شماره 69931
عنوان فارسی مقاله

عصب روانشناختی یادگیری ترس و کنترل ترس

کد مقاله سال انتشار مقاله انگلیسی ترجمه فارسی تعداد کلمات
69931 2005 10 صفحه PDF سفارش دهید محاسبه نشده
خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.
عنوان انگلیسی
The neuropsychology of fear learning and fear regulation
منبع

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

Journal : International Journal of Psychophysiology, Volume 57, Issue 1, July 2005, Pages 5–14

کلمات کلیدی
شرطی سازی ترس؛ نیرومند وحشت زده ؛ آمیگدال؛ اطلاع؛ کوری کورتیکال؛ لوبکتومی زمانی
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چکیده انگلیسی

In the current review article it is suggested that fear is a central emotional state that can be activated by external threat cues. The subcortical defensive system cannot only be activated by intrinsically aversive events but shows also strong plasticity enabling previously innocuous stimuli to get access to the fear system after they were paired with painful outcomes. On the other hand, aversive conditioning does not only result in the acquisition of a defensive disposition, the organism also learns on a pure cognitive level that one stimulus predicts the occurrence of another stimulus. It is suggested here that potentiation of the acoustic startle reflex is a rather specific measure for fear acquisition, while skin conductance discrimination indexes contingency learning. It is shown that the acquisition of fear-potentiated startle does not require cortical processing of the conditioned stimulus. Moreover, data indicate that conditioned startle potentiation is abolished in patients with unilateral lesions of the amygdala. Finally, conditioned startle potentiation can be obtained without contingency awareness, which on the other hand is necessary for skin conductance conditioning to occur. It is suggested that the learning of stimulus relations is mediated by the hippocampus and that conditioned startle potentiation is also mediated by the hippocampus in trace conditioning.

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