تاثیر تحریک الکتریکی مستقیم قشر خلفی‌خارجی و شکمی‌میانی پیش‌پیشانی بر بهبود ارزش آینده در کودکان با اختلال نقص‌توجه-بیش‌فعالی

نویسندگان
آذین سراج خرمی
وحید نجاتی
دانشگاه شهیدبهشتی
چکیده
کودکان مبتلا به اختلال نقص ­توجه و بیش ­فعالی پاداش کوچک­تر اما فوری را به پاداش بزرگ­تر و در آینده ترجیح می ­دهند که این امر منجر به تصمیم ­گیری و رفتارهای تکانشی در آن­ها می ­شود. هدف از پژوهش حاضر بررسی تاثیر تحریک الکتریکی مستقیم قشر خلفی خارجی و شکمی میانی پیش ­پیشانی برای بهبود ارزش آینده در کودکان مبتلا به اختلال نقص ­توجه و بیش ­فعالی بود. در این پژوهش 20 کودک مبتلا به بیش­ فعالی و نقص­ توجه با روش نمونه­ گیری در دسترس انتخاب شدند و هر کدام از آزمودنی­ ها در سه موقعیت تحریک آندی قشر خلفی­ خارجی پیش ­پیشانی و مهار قشر شکمی میانی پیش ­پیشانی، الگوی معکوس این تحریک و در نهایت در شرایط شبه تحریک از طریق آزمون اثر دیرکرد پاداش مورد ارزیابی قرار گرفتند. یافته­ ها نشان داد که تفاوت معناداری بین عملکرد آزمودنی­ ها در آزمون اثر دیرکرد پاداش در موقعیت­ های مختلف تحریک وجود دارد0/05 > p و تحریک آند بر قشر شکمی ­میانی پیش ­پیشانی ارزش آینده را به­ طور معناداری بهبود می­ بخشد.
کلیدواژه‌ها
تحریک الکتریکی
ارزش آینده
نقص‌توجه- بیش‌فعالی

عنوان مقاله English

Effect of transcranial Direct Current Stimulation (tDCS) on DLPFC and VMPFC on Improvement of delay discounting in children with Attention Deficit and Hyperactivity Symptoms

نویسندگان English

Azin Sarraj Khorrami
Vahid Nejati
Shahid Beheshti University
چکیده English

Children with ADHD symptoms prefer smaller and immediate gain rather than bigger and long-term ones. This problem would result in impulsive behaviors and decision making. The aim of this study was to show the effect of transcranial Direct Current Stimulation (tDCS) on DLPFC and VMPFC on Improvement of delay discounting in children with Attention Deficit and Hyperactivity Symptoms.In this study, 20 children with hyperactivity and attention deficit symptoms were selected by available sampling method and each of the subjects participated in three montages including anodal/cathodal tDCS on dorsolateral prefrontal cortex and ventral medial prefrontal cortex, the reversed montage, and sham stimulation condition and assessed by delay discounting task. The findings show that there is significant difference in the performance of the subjects in the delay discounting task which was performed on different stimulation positions p<0/05 and anodal stimulation of VMPFC significantly improved delay discounting.

کلیدواژه‌ها English

transcranial stimulation
delay discounting
ADHD
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