تاثیر تحریک الکتریکی مغز با استفاده از جریان مستقیم بر حافظه کاری کلامی کودکان با کم توانی ذهنی خفیف

نوع مقاله : مقاله پژوهشی

نویسندگان

• نازی رمضانی گل افزانی ¹
• ابوالفضل کرمی ²
• رضا رستمی ³

¹ دانشجوی دکتری روانشناسی عمومی، گروه روان‌شناسی، واحد سمنان، دانشگاه آزاد اسلامی، سمنان، ایران

² دانشیار گروه روانشناسی، واحد سمنان، دانشگاه آزاد اسلامی، سمنان، ایران

³ استاد ، گروه روان‌شناسی، دانشکده روانشناسی و علوم تربیتی، دانشگاه تهران، تهران، ایران

10.30495/jpmm.2021.26570.3245

چکیده

مقدمه:. این پژوهش با هدف تعیین اثر بخشی تحریک الکتریکی از روی جمجمه با جریان مستقیم بر حافظه کاری کلامی کودکان با کم توانی ذهنی خفیف انجام شده است.
روش: روش پژوهش حاضر نیمه آزمایشی از نوع طرح پیش آزمون- پس آزمون با گروه گواه بود. جامعه آماری شامل کودکان ۷ تا ۱۴ ساله ای بود که جهت ارزیابی بالینی به کلینیک آتیه تهران مراجعه کرده و بر اساس مصاحبه بالینی و نسخه‌ی نوین هوش‌آزمای تهران – استانفورد بینه (۱۳۸۵) ، در گروه کودکان با کم توانی ذهنی خفیف قرار گرفتند.  گروه نمونه شامل ۳۰ کودک واجد شرایط داوطب بود که با روش نمونه گیری در دسترس، از جامعه مذکور وارد مطالعه شده و بصورت تصادفی در دو گروه آزمایش و گواه قرار گرفتند. گروه آزمایش ۵ جلسه متوالی tDCS دریافت کردند و پس از اتمام جلسات، از هر دو گروه آزمایش و گواه مجددا آزمون هوش تهران- استانفورد بینه به عمل آمد. داده ها با استفاده از نرم افزار SPSS و بوسیله آزمون کوواریانس تک متغیری تجزیه و تحلیل قرار گرفت. سطح معناداری در همه آزمونها ۰۱/۰ در نظر گرفته شد.
یافته­ها: یافته ها نشان داد که تحریک الکتریکی قشر مغز، باعث افزایش عملکرد حافظه کاری در گروه مداخله در مقایسه با گروه گواه، شد (۰۰۲/۰=P).
نتیجه­گیری: باتوجه به یافته­های پژوهش حاضر می­توان نتیجه گرفت که می توان از روش تحریک الکتریکی قشر مغز بوسیله جریان مستقیم (tDCS) جهت بهبود عملکرد حافظه کاری کلامی در کودکان دارای کم توانی ذهنی خفیف استفاده کرد.

کلیدواژه‌ها

• تحریک الکتریکی مستقیم مغز
• حافظه کاری کلامی
• کم توانی ذهنی خفیف
• هوش آزمای تهران استانفورد بینه

20.1001.1.22285516.1400.12.45.4.3

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عنوان مقاله [English]

The Effect of Transcranial direct current stimulation (tDCS) on the verbal working memory in children with mild intellectual disabilities

نویسندگان [English]

• Nazi Ramezani Golafzani ¹
• Abolfazl Karami ²
• Reza Rostami ³

¹ Department of psychology, Semnan Branch, Islamic Azad University, Semnan, Iran

² Department of psychology ،Semnan Branch ، Islamic Azad University ،Semnan ،Iran

³ Department of psychology, psychology and education branch, Tehran university, Tehran, Iran

چکیده [English]

One of the most important areas of cognitive impairment in children with intellectual disabilities is related to working memory. Transcranial direct current stimulation (tDCS) is a noninvasive brain stimulation that has been studied as a way to increase cortical excitability and enhance working memory. This research aimed to analyze the efficacy of tDCS on verbal working memory of children with borderline intellectual functioning. The research method was quasi-experimental pretest-posttest design with control group. The statistical population was children who visited the Atieh clinic and were diagnosed with mild mental disability based on clinical interview and Tehran-Stanford-Binet IQ scale. Through convenience sampling, 30 people were collected from this population and were assigned randomly into experimental and control groups. The experimental group was provided 5 consecutive sessions of electrical stimulation in the Dorsolateral prefrontal cortex area with an intensity of 1 mA and a duration of 30 minutes. The data was analyzed using one-way ANCOVA and results illustrated that the Transcranial direct current stimulation (tDCS) interventions has statistically meaningful positive effect on the verbal working memory of the children with borderline intellectual functioning

کلیدواژه‌ها [English]

• Verbal Working memory
• Transcranial direct current stimulation (tDCS)
• mild intellectual disabilities

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