نوع مقاله : مطالعه پژوهشی اصیل
نویسندگان
1 دانشجوی کارشناسی ارشد رفتار حرکتی، دانشکده علوم ورزشی، دانشگاه شهید چمران اهواز، اهواز، ایران.
2 گروه رفتار حرکتی، دانشکده علوم ورزشی، دانشگاه شهید چمران اهواز، اهواز، ایران
3 استادیار گروه علوم ورزشی، دانشکده علوم انسانی، دانشگاه دامغان، دامغان، ایران
چکیده
این پژوهش به منظور بررسی تحریک الکتریکی مستقیم فراجمجمه‌ای مغز بر حافظۀ کاری در افراد ورزشکار و غیر ورزشکار انجام شد. بنابراین 48 شرکت کننده (18-30 سال) به روش هدفمند انتخاب شدند. سپس به طور مساوی به دو گروه ورزشکار و غیر ورزشکار تقسیم شدند. هر گروه به طور تصادفی به دو زیرگروه مساوی تحریک واقعی و ساختگی تقسیم شدند. تحریک واقعی و ساختگی با شدت جریان الکتریکی دو میلی‌آمپری به مدت 20 دقیقه و طی سه جلسه ارائه شد. نرم افزار اِن-بَک برای ارزیابی حافظۀ کاری استفاده شد. نتایج نشان داد گروه ورزشکار نسبت به غیر ورزشکار و گروه تحریک واقعی نسبت به گروه تحریک ساختگی دارای عملکرد بهتری بودند. گروه ورزشکار در شرایط تحریک واقعی در مرحله پسآزمون پیشرفت کردند. مطابق با یافته های حاضر تحریک الکتریکی مستقیم مغز به طوری که تحریک آند و کاتد به ترتیب بر روی قشر پیش پیشانی جانبی-پشتی چپ و راست اعمال شود، باعث بهبود عملکرد حافظۀ کاری در افراد ورزشکار می‌شود.
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
The Effect of Transcranial Direct Current Stimulation on the Working Memory
نویسندگان [English]
- Asieh Shabahang 1
- Rasool Abedanzadeh 2
- Hesam Ramezanzadeh 3
1 1. M.A. at Motor Behavior, Sport Sciences Faculty, Shahid Chamran University of Ahvaz, Ahvaz, Iran
2 Department of Motor Behavior, Sport Sciences Faculty, Shahid Chamran University of Ahvaz, Ahvaz, Iran
3 Assistant Professor, Department of Sport Sciences, School of Humanities, Damghan University, Damghan, Iran
چکیده [English]
Aim of this research was investigating of the effect of transcranial direct current stimulation on the working memory in athletes and nonathletes. To this end, 48 persons (18-30 years) purposefully was selected and was equally assigned into two athletes and nonathletes groups. Then, each group was randomly divided to tow actual and artificial stimulation sub-groups. The actual and sham stimulation presented with 2 mA electric current intensity for 20 minutes within three sessions. N-back computer task was used to measure working memory. The results showed the athlete's group rather than nonathlete and the actual stimulation group compared to the Sham group had better performance. The athlete group progressed in the actual stimulation in the post-test. Direct electrical stimulation of the brain so that anodal stimulation on left dorsolateral prefrontal cortex and catodal stimulation on right dorsolateral prefrontal cortex improve of working memory in athlete.
کلیدواژه‌ها [English]
- Dorsolateral Prefrontal Cortex
- Working Memory
- N-Back Task
- Athletes
- Nonathletes
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