کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6805719 | 1433565 | 2014 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Neural correlates of age-related decline and compensation in visual attention capacity
ترجمه فارسی عنوان
ارتباط عصبی با کاهش سن و جبران خسارت در ظرفیت توجه بصری
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
سالمندی
چکیده انگلیسی
We identified neural correlates of declined and preserved basic visual attention functions in aging individuals based on Bundesen “Theory of Visual Attention”. In an interindividual difference approach, we contrasted electrophysiology of higher- and lower-performing younger and older participants. In both age groups, the same distinct components indexed performance levels of parameters visual processing speed C and visual short-term memory storage capacity K. The posterior N1 marked interindividual differences in C and the contralateral delay activity marked interindividual differences in K. Moreover, both parameters were selectively related to 2 further event-related potential waves in older age. The anterior N1 was reduced for older participants with lower processing speed, indicating that age-related loss of attentional resources slows encoding. An enhanced right-central positivity was found only for older participants with high storage capacity, suggesting compensatory recruitment for retaining visual short-term memory performance. Together, our results demonstrate that attentional capacity in older age depends on both preservation and successful reorganization of the underlying brain circuits.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neurobiology of Aging - Volume 35, Issue 9, September 2014, Pages 2161-2173
Journal: Neurobiology of Aging - Volume 35, Issue 9, September 2014, Pages 2161-2173
نویسندگان
Iris Wiegand, Thomas Töllner, Mads Dyrholm, Hermann J. Müller, Claus Bundesen, Kathrin Finke,