بررسی امواج مغزی افراد زودانگیخته در تکلیف شناختی

نویسنده
مهناز شاهقلیان
دانشگاه خوارزمی
چکیده
هدف پژوهش، بررسی امواج مغزی افراد با رگه زودانگیختگی در هنگام انجام تکلیف شناختی بود. از میان 140 دانشجوی دختر که فرم تجدید نظر شده پرسشنامه شخصیتی آیزنک را تکمیل کردند، بعد از کنترل معیارهای ورود، 2 گروه 15 نفره شامل زودانگیخته بالا (Imp+) و زودانگیخته پایین (Imp-) انتخاب شدند. از آزمودنی­های انتخاب شده در دو موقعیت شامل الف) حالت استراحت (بدون انجام تکلیف) و ب) انجام تکلیف شناختی (آزمون­ ویسکانسین)،EEG گرفته ­شد. نتایج نشان داد در افراد Imp+ فعالیت نواحی پیش­پیشانی، پیشانی و گیجگاهی هر دو نیمکره، هنگام انجام تکلیف شناختی افزایش معنادار می­یابد. مقادیر موج آلفا و تتا نشان داد در هنگام انجام تکلیف شناختی میزان فعالیت تمام نواحی هر دو نیمکره، در گروه Imp+ بیشتر از گروه - Imp است. در مورد موج بتا نتایج حاکی از فعالیت بیشتر پیش­پیشانی و گیجگاهی نیمکره چپ و پیشانی نیمکره راست در گروه Imp+در مقایسه با گروه دیگر بود. نتایج بر لزوم در نظر داشتن رگه­های شخصیتی هنگام بررسی فعالیت ناحیه­ای مغز و نیز بررسی زودانگیختی کنش­ور و تمایز آن با زودانگیختگی ناکنش­ور تأکید می­کنند.
کلیدواژه‌ها
امواج مغزی
زودانگیختگی
تکلیف شناختی

عنوان مقاله English

To investigate Brain Waves of Impulsivity individuals in Cognitive Task

نویسنده English

mahnaz shahgholian
-
چکیده English

The purpose of study was to determine the brain waves of subjects with impulsivity trait in performing cognitive task. 140 female students who completed the Revised Eysenck Personality Questionnaire, after control of the inclusion criteria, two groups of 20 people, including high impulsive (Imp+) and low impulsive (Imp-) were selected. The subjects in two status: (a) resting (without doing the task); and (b) performing a cognitive task (Wisconsin test), taking EEG. The Results showed, when performing a cognitive task, activity of the prefrontal, frontal, and temporal areas of both hemispheres increased significantly in Imp+. Alpha and Theta wave showed that during cognitive task, the activity of all regions of both hemispheres in Imp+ was greater than Imp-. About Beta wave, the results indicated that the left prefrontal, temporal and the right frontal was more activated in Imp+ than the other group. The results emphasize to consider personality traits when examining the brain regional activity, as well as investigate of the functional impulsivity and its differentiation with dysfunctional impulsivity .

کلیدواژه‌ها English

Brain waves
impulsivity
Cognitive task
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