دانلود مقاله ISI انگلیسی شماره 70931
عنوان فارسی مقاله

حافظه آینده نگر و حافظه کاری: اثرات نامتقارن در طول انگیزش لوب فرونتال TMS

کد مقاله سال انتشار مقاله انگلیسی ترجمه فارسی تعداد کلمات
70931 2010 9 صفحه PDF سفارش دهید محاسبه نشده
خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.
عنوان انگلیسی
Prospective memory and working memory: Asymmetrical effects during frontal lobe TMS stimulation
منبع

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

Journal : Neuropsychologia, Volume 48, Issue 11, September 2010, Pages 3282–3290

کلمات کلیدی
حافظه آینده نگر؛ حافظه کاری؛ قشر جلوی مغز؛ TMS؛ تقاضاهای منابع
پیش نمایش مقاله
پیش نمایش مقاله حافظه آینده نگر و حافظه کاری: اثرات نامتقارن در طول انگیزش لوب فرونتال TMS

چکیده انگلیسی

The role of working memory (WM) for the realization of an intended action (prospective memory, PM) has been debated in recent neuropsychological literature. The present study aimed to assess whether WM and PM share resources or are, alternatively, two distinct mechanisms. A verbal task was used, which manipulated the cognitive demand of both WM and PM dimensions on an event-based prospective task. Transcranial magnetic stimulation (TMS) was also employed to clarify the causal contribution of frontal areas previously related to WM, to the PM process. The prospective task required the participant to respond whenever a word appeared which had been presented before the beginning of the task. Two ongoing tasks were administered: an updating WM task (in two conditions of medium and high WM demands) and a lexical decision task (representing a low WM demand). In the first two experiments, higher PM demand affected WM only at higher loads, but the PM load effect was independent of WM, showing asymmetrical behavioural effects. In the third experiment, single pulse TMS was applied to left and right dorsolateral prefrontal cortices. When applied to the experimental sites, stimulation increased error rates of the PM task, while the effect was only marginal in the WM task. The effect was bilateral, since there was no difference between left and right stimulation sites. These findings demonstrated, from both behavioural and neurofunctional perspectives, that WM and PM processes are not based on the same memory system, but PM may require WM resources at high demand.

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