In collaboration with Payame Noor University and Iranian Health Psychology

Document Type : review

Authors

1 PhD student, Department of Psychology, Payame Noor University, Iran, Tehran

2 Associate Professor, Department of Psychology, Payame Noor University, Iran, Tehran

3 Professor, Department of Psychology, Payame Noor University, Iran, Tehran

Abstract

Objective: The present study aimed to investigate the effectiveness of Transcranial Direct Current Stimulation (tDCS) on neurocognitive performance in people with mild neurocognitive impairment. Using meta-analysis and integrating the research results, this study has examined the extent of the effect of Transcranial Direct Current Stimulation on the improvement of neurocognitive function in people with mild neurocognitive impairment.
Method: For collecting data for meta-analyses, Magiran, SID, and Irandoc databases were used to search Persian articles and Science direct, Scopus, and PubMed databases were used to find foreign articles by the use of keywords of ‘MCI’, ‘transcranial direct current stimulation’, tDCS, and ‘mild cognitive impairment’ and their equivalences for Persian articles. Of the 29 studies, 11 methodologically acceptable were meta-analyzed. The research tool was a meta-analysis checklist.
Results: The results of the study indicated publication bias in the studies. Due to the heterogeneity of the studies, a random-effect model was used. The effect of Hedges for the impact of Transcranial Direct Current Stimulation on neurocognitive functions in people with mild neurocognitive impairment was 0.26, which was a large effect.
Conclusion: This result shows that clinicians can choose transcranial direct current stimulation (tDCS) as an effective intervention for patients who suffer from mild cognitive impairments. More investigations are necessary to find out the cognitive benefits of using transcranial direct current stimulation in elderly people and other cognitive impaired persons. 

Keywords

Article Title [Persian]

فراتحلیل اثربخشی تحریک مستقیم الکتریکی مغز از روی جمجمه بر کارکردهای عصبی-شناختی در افراد مبتلا به آسیب عصبی-شناختی خفیف

Authors [Persian]

  • محدثه کاکو جویباری 1
  • محمد اورکی 2
  • حسین زارع 3
  • احمد علیپور 3

1 PhD student, Department of Psychology, Payame Noor University, Iran, Tehran

2 Associate Professor, Department of Psychology, Payame Noor University, Iran, Tehran

3 Professor, Department of Psychology, Payame Noor University, Iran, Tehran

Abstract [Persian]

هدف پژوهش حاضر فراتحلیل اثربخشی تحریک مستقیم الکتریکی مغز از روی جمجمه بر کارکردهای عصبی-شناختی در افراد مبتلا به آسیب عصبی-شناختی خفیف بود. این پژوهش با استفاده از روش فراتحلیل یا یک پارچه کردن نتایج تحقیقات، میزان اندازه ی اثر تحریک مستقیم الکتریکی مغز از روی جمجمه را بر بهبود کارکرد عصبی- شناختی در افراد مبتلا به آسیب عصبی-شناختی خفیف مشخص کرده است. برای مقالات فارسی از magiran، SID و irandoc و برای مقالات خارجی از سایت های Sciencedirect، Scopus و PubMed استفاده شد و کلیدواژه های انگلیسی MCI، transcranial direct current stimulation, tDCS و mild cognitive impairment و کلیدواژها در سرچ فارسی تحریک الکتریکی مغز از روی جمجمه ، اختلال شناختی خفیف و اختلالات عصبی-شناختی خفیف بود. از بین 29 پژوهش، 11 پژوهش که از لحاظ روش شناختی مورد قبول بود، فراتحلیل صورت گرفت. ابزار پژوهش چک لیست فراتحلیل بود. نتایج فراتحلیل حاکی از سوگیری انتشار در مطالعات بود. با توجه به ناهمگنی مطالعات از مدل اثرات تصادفی استفاده شد. اندازه اثر g هچز برای تاثیر تحریک مستقیم الکتریکی از روی جمجمه بر کارکردهای عصبی-شناختی در افراد مبتلا به آسیب عصبی-شناختی خفیف 26/0 بود که یک اثر بزرگ محسوب می شود.

Keywords [Persian]

  • مداخلات توانبخشی شناختی
  • زمینه‌های عصبی- شناختی
  • آسیب شناختی خفیف
  • فراتحلیل
  • سلامت سالمندی
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