دانلود مقاله ISI انگلیسی شماره 72173
ترجمه فارسی عنوان مقاله

پتانسیل مغز مربوط به رویداد و واکنش های عاطفی به تهدید در ترس از عنکبوت/مار و سایر چیزهای غیرترسناک

عنوان انگلیسی
Event-related brain potentials and affective responses to threat in spider/snake-phobic and non-phobic subjects
کد مقاله سال انتشار تعداد صفحات مقاله انگلیسی
72173 2005 10 صفحه PDF
منبع

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

Journal : International Journal of Psychophysiology, Volume 57, Issue 1, July 2005, Pages 43–52

ترجمه کلمات کلیدی
ERP؛ ظرفیت؛ انگیختگی؛ ترس از حیوانات؛ ترس
کلمات کلیدی انگلیسی
ERP; Valence; Arousal; Animal phobia; Fear
پیش نمایش مقاله
پیش نمایش مقاله  پتانسیل مغز مربوط به رویداد و واکنش های عاطفی به تهدید در ترس از عنکبوت/مار و سایر چیزهای غیرترسناک

چکیده انگلیسی

We investigated cortical responses and valence/arousal ratings of spider phobic, snake phobic, and healthy subjects while they were processing feared, fear-relevant, emotional neutral, and pleasant stimuli. Results revealed significantly larger amplitudes of late ERP components (P3 and late positive complex, LPC) but not of early components (N1, P2, N2) in phobics when subjects were processing feared stimuli. This fear-associated increase of amplitudes of late ERP components in phobic subjects was maximal at centro-parietal and occipital brain sites. Furthermore, phobics but not controls rated feared stimuli to be more negative and arousing than fear-relevant, emotional neutral, and pleasant stimuli. Since late ERP components and valence/arousal ratings were only significantly increased when phobic subjects but not when healthy controls were processing feared stimuli, the present data suggest that P3 and LPC amplitudes represent useful neural correlates of the emotional significance and meaning of stimuli.