دانلود مقاله ISI انگلیسی شماره 39660
عنوان فارسی مقاله

پیری سالم با پردازش عصبی افزایش یافته ظرفیت مثبت اما پردازش تضعیف شده انگیختگی عاطفی در ارتباط است: یک مطالعه fMRI

کد مقاله سال انتشار مقاله انگلیسی ترجمه فارسی تعداد کلمات
39660 2013 13 صفحه PDF سفارش دهید محاسبه نشده
خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.
عنوان انگلیسی
Healthy aging is associated with increased neural processing of positive valence but attenuated processing of emotional arousal: an fMRI study
منبع

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

Journal : Neurobiology of Aging, Volume 34, Issue 3, March 2013, Pages 809–821

کلمات کلیدی
انگیختگی عاطفی - پردازش تضعیف شده - ظرفیت مثبت
پیش نمایش مقاله
پیش نمایش مقاله پیری سالم با پردازش عصبی افزایش یافته ظرفیت مثبت اما پردازش تضعیف شده انگیختگی عاطفی در ارتباط است: یک مطالعه fMRI

چکیده انگلیسی

Arousal and valence play key roles in emotional perception, with normal aging leading to changes in the neural substrates supporting valence processing. The objective of this study was to investigate normal age-related changes in the neural substrates of emotional arousal processing. Twenty-three young and 23 older, healthy women underwent functional magnetic resonance imaging as they viewed images which were neutral or positive in valence and which varied in arousal level from low to high. Using a parametric modulation approach, we examined how the blood oxygen-level dependent signal varied with single trial subjective ratings of valence and arousal, and whether this differed with age. In accordance with previous studies we found that the older group showed greater activation in response to positive valence, in the left amygdala, left middle temporal gyrus and right lingual gyrus. In contrast however, they showed reduced reactivity to emotional arousal, in occipital and temporal visual cortices bilaterally, the left inferior parietal cortex, and the supplementary motor area bilaterally. This study represents the first of its kind to clearly dissociate how aging affects the neural correlates of emotional arousal and valence. The changes in arousal processing may in part be mediated by the functional reorganization evident in the aging brain, such as reduced activation of the posterior cortices as described by the posterior-anterior shift in ageing (PASA) effect.

خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.