با همکاری مشترک دانشگاه پیام نور و انجمن عصب روان‌شناسی

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی دکتری روانشناسی، دانشگاه شهید باهنر کرمان، کرمان، ایران.

2 دانشیار روانشناسی، دانشگاه شهید باهنر کرمان، کرمان، ایران.

3 استادیار روانشناسی، دانشگاه شهید باهنر کرمان، کرمان، ایران.

چکیده

تصمیم­ گیری بخشی از کنترل شناختی است که در ارزیابی خواسته­ ها نقش اساسی دارد. پژوهش حاضر به منظور بررسی تاثیرات tDCS روی ناحیه مغزی OFC نیمکره راست در تصمیم­ گیری پرخطر و ریسک­ پذیری انجام شد. روش: مطالعه حاضر از نوع مطالعه آزمایشی یک سو کور بود که روی 30 فرد بزرگسال سالم انجام شد. در این مطالعه افراد به تصادف در دو گروه آزمایشی و شم قرار گرفتند. در گروه آزمایشی تحریک آندیOFC نیمکره راست و تحریک کاتدی DLPFC نیمکره چپ در حدود 2 میلی­ آمپر اجرا شد. ابزارهای مورد استفاده  نسخه­ های کامپیوتری آزمون بارت و آزمون آیوا برای بررسی تصمیم­ گیری پرخطر و ریسک­ پذیری بودند. داده­ ها با استفاده از آزمون کوواریانس تک­ متغیره(آنکوا) مورد تجزیه و تحلیل قرار گرفتند. یافته­ ها: نتایج بیانگر تفاوت معنادار بین دو گروه آزمایش و کنترل در آزمون بارت(05/0

کلیدواژه‌ها

عنوان مقاله [English]

Influence of tDCS on right hemisphere OFC on executive performance of high risk decision making and risk taking

نویسندگان [English]

  • farzaneh pouladi 1
  • masood bagheri 2
  • ghasem askarizadeh 3

1 PhD Student in Psychology,Shahid Bahonar University of Kerman, Keerman, Iran.

2 Assistant professor of Psychology,Shahid Bahonar University of Kerman, Keerman, Iran.

3 Associate professor of Psychology,Shahid Bahonar University of Kerman, Keerman, Iran.

چکیده [English]

Aim: Decision-making is part of the cognitive control that plays a key role in the evaluation of desires. The present study was performed to investigate the effects of tDCS on the left hemisphere DLPFC brain region in high-risk decision making and risk-taking. Method: The study was a single-blind experimental study performed on 30 healthy adults. In this study, subjects were randomly divided into two experimental and sham groups. In the experimental group, anodal stimulation over the right hemisphere OFC and cathodal stimulation over the left DLPFC was performed at 2 mA. The tasks used were computer versions of Balloon Analogue Risk Task(BART) and Iowa Gambling Task(IGT) for evaluating high-risk decision making and risk-taking. Data were analyzed using a one-way ANCOVA test. Results: Results showed a significant difference between the experimental and control groups in the Bart test(P

کلیدواژه‌ها [English]

  • tDCS
  • OFC
  • right hemisphere
  • high risk decision making
  • risk taking
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