اثربخشی تحریک الکتریکی مستقیم فراجمجمه‌ای مغز بر زمان واکنش و تصمیم‌گیری پرخطر در افراد مبتلا به افسردگی

نوع مقاله: مقاله پژوهشی

نویسندگان

1 استادیار روانشناسی، دانشگاه شهید مدنی آذربایجان، تبریز، ایران

2 استادیار روانشناسی، دانشگاه شهید مدنی آذربایجان، تبریز، ایران.

3 کارشناسی‌ارشد روانشناسی، دانشگاه شهید مدنی آذربایجان، تبریز، ایران. .

10.30473/clpsy.2020.45860.1434

چکیده

مقدمه: اختلال در کارکردهای شناختی از علائم رایج درافراد افسرده به شمار می­رود. پژوهش حاضر با هدف بررسی اثربخشی تحریک الکتریکی مستقیم فراجمجمه­ای مغزtDCS)) بر تصمیم­گیری پرخطر و زمان واکنش در افراد مبتلا به  افسردگی صورت گرفته است. روش: 30 نفر از دانشجویان دارای اختلال افسردگی  که درسال 97 به مرکز مشاوره دانشگاه شهید مدنی آذربایجان مراجعه کرده بودند انتخاب شدند، به­صورت تصادفی به دو گروه 15 نفره آزمایش و کنترل تقسیم گردیدند. گروه آزمایش در ناحیه DLPFC چپ، به مدت دو هفته ، هر هفته 5 روز و هرجلسه به مدت 20 دقیقه تحریک آندی tDCS دریافت نمودند. قبل ازشروع و در پایان دوره تحریک الکتریکی،        تصمیم­گیری پرخطر و زمان واکنش شرکت­کنندگان به ترتیب توسط آزمون خطرپذیری بادکنکی بارت ، دستگاه زمان­سنج واکنش مورد ارزیابی قرار گرفتند. داده­های به­دست آمده با استفاده از روش آماری تحلیل کواریانس تحلیل گردیدند. یافته­ها: نتایج نشان داد که زمان واکنش به­طور معنی­داری درگروه آزمایش سریع­تر از گروه کنترل بود (05/0 >p).علاوه بر این، در آزمایش بارت نیز میانگین تعداد پمپ­های تنظیم شده (AMP) در گروه آزمایش کمتر از گروه کنترل بود (05/0 >p). نتیجه‌گیری: براساس یافته­های حاضر، تحریک آندی tDCS  موجب کاهش زمان واکنش و کاهش رفتارهای خطرساز گردید.  بنابراین تحریک الکتریکی فراجمجمه­ای می­تواند به­عنوان یک روش غیردارویی و بی­خطر برای ارتقاءکارکردهای شناختی افراد مبتلا به افسردگی مورد استفاده قرارگیرد.

کلیدواژه‌ها


عنوان مقاله [English]

Effective of Transcranial Direct Current Stimulation (tDCS) on reaction time and risky Decision-Making in people with Depression

نویسندگان [English]

  • ladan vaghef 1
  • hasan bafandeh gharamaleki 2
  • fatemeh soltani margani 3
1 Assistant professor of Psychology, Azarbaijan Shahid Madani University,Tabriz, Iran
2 Assistant professor of Psychology, Azarbaijan Shahid Madani University,Tabriz, Iran
3 M.A in Psychology, Azarbaijan Shahid Madani University,Tabriz, Iran
چکیده [English]

Aim:The impairment in Cognitive functions is common symptoms of Depression. The purpose of this research is investigation of the effect of transcranial direct current stimulation (tDCS) on risky Decision-Making and reaction times (RT) in patients with Depression. Methods: Thirty university students with depressive symptoms who were referred to the Counseling Center of Azarbaijan Shahid Madani University were selected and randomly divided into two groups : experimental and control groups (n=15 per group). The experimental group received anodal-tDCS stimulation over the left DLPFC for two weeks, 5 days a week and each session for 20 minutes. Risky decision making and reaction time were assessed by Balloon Analogue Risk Task (BART) and reaction timer apparatus, respectively. The obtained data were analyzed using covariance analysis and paired t-test. Findings: The Results showed that the reaction times of both hands and feet was significantly faster in experimental group than sham group (p <0.05). Moreover, adjusted mean number of pumps (AMP) was lower in the experimental group than in the control group, during the BART task. Conclusion: according to our result, anodal tDCS stimulation reduced reaction time and decreased risk-taking behaviors.Therefore,transcranial electrical stimulation can be usedas a non-pharmacological and safe intervention to improve cognitive impairment to enhance the cognitive functions in people with depression.
 

کلیدواژه‌ها [English]

  • Transcranial Direct Current Stimulation (tDCS)
  • Reaction Time
  • risky Decision-Making
  • Depression

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