دانلود مقاله ISI انگلیسی شماره 39795
عنوان فارسی مقاله

تفاوت مربوط به سن در مغز در طول پردازش چهره عاطفی

کد مقاله سال انتشار مقاله انگلیسی ترجمه فارسی تعداد کلمات
39795 2003 11 صفحه PDF سفارش دهید محاسبه نشده
خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.
عنوان انگلیسی
Age-related differences in brain activation during emotional face processing
منبع

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

Journal : Neurobiology of Aging, Volume 24, Issue 2, March–April 2003, Pages 285–295

کلمات کلیدی
پیری - مغز - پردازش احساسات و صورت - تصویربرداری عصبی عملکردی - fMRI
پیش نمایش مقاله
پیش نمایش مقاله تفاوت مربوط به سن در مغز در طول پردازش چهره عاطفی

چکیده انگلیسی

Advancing age is associated with significant declines on neurobehavioral tasks that demand substantial mental effort. Functional imaging studies of mental abilities indicate that older adults faced with cognitive challenges tend to activate more regions, particularly frontal, than their younger counterparts, and that this recruitment of additional regions may reflect an attempt to compensate for inefficiency in cortical networks. The neural basis of emotion processing in aging has received little attention, and the goal of the present study was to use functional magnetic resonance imaging (fMRI) to examine the influence of age on facial emotion processing and activation in cortical and limbic regions. Participants (eight old and eight young adults) viewed facial displays of happiness, sadness, anger, fear, disgust, and neutrality in alternating blocks of emotion and age discrimination. We predicted that in response to an emotion discrimination task, older adults would demonstrate increased use of frontal regions relative to younger adults, perhaps combined with diminished use of regions recruited by younger adults, such as temporo-limbic regions. During the emotion discrimination task, young participants activated, visual, frontal and limbic regions, whereas older participants activated parietal, temporal and frontal regions. A direct comparison between emotion and age discrimination revealed that while younger adults activated the amygdala and surrounding temporo-limbic regions, older adults activated left frontal regions. The results of this study suggest that older adults may rely on different cortical networks to perceive emotional facial expressions than do their younger counterparts.

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