تحریک مغز از روی جمجمه با استفاده از جریان مستقیم الکتریکی (TDCS) بر حافظه کاری در افراد سالم

نویسندگان
امین ارکان
فریدون یاریاری
دانشگاه خوارزمی
چکیده
این پژوهش به منظور بررسی تاثیر تحریک مغز از روی جمجمه با استفاده از جریان مستقیم الکتریکی بر روی حافظه کاری در ناحیه قشر پیش پیشانی خلفی جانبی انجام شد. طرح این نوع پژوهش از نوع آزمایشی با گروه گواه و انتساب تصادفی و جامعه ی آماری آن دانشجویان مرد دانشگاه خوارزمی در مقطع سنی 18 تا 23 سال بود. دو نوع مختلف تحریک آندی و ساختگی با شدت جریان 2 میلی آمپر و به مدت 15 دقیقه بر 30 نفر شرکت کننده طی 3 جلسه ارائه شد. شرکت کنندگان قبل و بعد از تحریک با آزمون تعیین فراخنای حافظه کاری جهت بررسی زمان واکنش و تعداد پاسخ­های درست مورد سنجش قرار گرفتند. پس از انجام تحلیل کوواریانس تک‌متغیری مشخص شد که تغییر در زمان واکنش و تعداد پاسخ­های درست از لحاظ آماری معنادار است. تحقیق حاضر نشان می­دهد که تحریک آندی سبب کاهش زمان واکنش و افزایش تعداد پاسخ­های صحیح شده است و به نظر می رسد موجب بهبود حافظه کاری می­شود.
کلیدواژه‌ها
تحریک الکتریکی مستقیم مغز از روی جمجمه (TDCS)
کرتکس پیش پیشانی خلفی جانبی (DLPFC)
حافظه کاری
تکلیف n-back

عنوان مقاله English

Effect of transcranial direct current stimulation (TDCS) on working memory in healthy people. Abstract

نویسندگان English

Amin Arkan
Fereydoon Yaryari
چکیده English

Aim of this research was exploring effect of transcranial direct current stimulation (TDCS) on working memory (WM) in dorsolateral prefrontal cortex (DLPFC) region in healthy people.The method used in this research was experimental with random assignment and control group. The population was male students of Kharazmi university in range of 18 to 23 years old. Thirty participant undertook three experimental sessions in which they received 15 minutes of 2 mA anodal TDCS or sham TDCS. After and before stimulation participant performed n-back task to measure reaction time and correct answers. After analysis of covariance there was significant statistically changing in reaction time and correct answers.The results shows that anodal stimulation reduced reaction time and increased correct answers and it seems made enhance on working memory

کلیدواژه‌ها English

transcranial direct current stimulation (TDCS)
dosolateral prefrontal cortex (DLPFC)
working memory (WM)
n-back task
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