دانلود مقاله ISI انگلیسی شماره 77243
عنوان فارسی مقاله

نقش سیستم اجرایی در عملکرد حافظه دیداری فضایی

کد مقاله سال انتشار مقاله انگلیسی ترجمه فارسی تعداد کلمات
77243 2003 18 صفحه PDF سفارش دهید محاسبه نشده
خرید مقاله
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عنوان انگلیسی
The role of the executive system in visuo-spatial memory functioning
منبع

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

Journal : Brain and Cognition, Volume 52, Issue 3, August 2003, Pages 364–381

کلمات کلیدی
فضایی؛ اجرایی؛ نسل تصادفی؛ عدم قطعیت؛ در حال بروز رسانی؛ موقعیت سریالی، وظیفه دوگانه
پیش نمایش مقاله
پیش نمایش مقاله نقش سیستم اجرایی در عملکرد حافظه دیداری فضایی

چکیده انگلیسی

Participants were presented with a spatial sequence in which between 4 and 10 cells were highlighted. On each trial list length was unknown to the participant who was required to serially recall the last four cells. Processing of longer lists is assumed to call upon the executive system, which is thought to be involved in updating the contents of the short-term visuo-spatial store. Study 1 revealed that loading the executive system with concurrent random letter generation impaired performance on the spatial task especially recall of the early serial positions. However, contrary to expectation the degree of impairment was no greater on the longer lists, where it had been assumed that updating would be occurring. Study 2 confirmed this finding and demonstrated that relative to sequences of known length, under conditions of uncertainty when the list length was unknown, spatial recall was impaired even on short sequences. The present results support the growing consensus, which is suggestive of closer links between visuo-spatial and executive processes. However, it remains unclear whether or not updating is actually occurring on the longer sequences, and if it is, what specific executive processes are involved.

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