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Effects of Transcranial Direct Current Stimulation Over the Left Primary Motor Cortex on Verbal Intelligence

Previous studies have shown that changes in gray matter density and volume in the left primary motor cortex are significantly associated with changes in individuals’ verbal intelligence quotient (VIQ), but not with their performance intelligence quotient (PIQ). In the present study, we examined the...

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Autores principales: Huang, Yifan, Zhang, Yinling, Zhang, Yizhe, Mai, Xiaoqin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9177941/
https://www.ncbi.nlm.nih.gov/pubmed/35693542
http://dx.doi.org/10.3389/fnhum.2022.888590
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author Huang, Yifan
Zhang, Yinling
Zhang, Yizhe
Mai, Xiaoqin
author_facet Huang, Yifan
Zhang, Yinling
Zhang, Yizhe
Mai, Xiaoqin
author_sort Huang, Yifan
collection PubMed
description Previous studies have shown that changes in gray matter density and volume in the left primary motor cortex are significantly associated with changes in individuals’ verbal intelligence quotient (VIQ), but not with their performance intelligence quotient (PIQ). In the present study, we examined the effects of transcranial direct current stimulation (tDCS) over the left primary motor cortex on performance in intelligence tests. We chose four subtests (two each for VIQ and PIQ) of the Wechsler Adult Intelligence Scale-Chinese Revised version and randomized participants into anodal, cathodal, and sham groups. We found that anodal stimulation significantly improved performance in verbal intelligence subtests compared to cathodal and sham stimulation, while performance intelligence subtest scores did not change in any stimulation condition. These findings suggest that the excitation level of the left primary motor cortex has a unique effect on verbal intelligence.
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spelling pubmed-91779412022-06-10 Effects of Transcranial Direct Current Stimulation Over the Left Primary Motor Cortex on Verbal Intelligence Huang, Yifan Zhang, Yinling Zhang, Yizhe Mai, Xiaoqin Front Hum Neurosci Neuroscience Previous studies have shown that changes in gray matter density and volume in the left primary motor cortex are significantly associated with changes in individuals’ verbal intelligence quotient (VIQ), but not with their performance intelligence quotient (PIQ). In the present study, we examined the effects of transcranial direct current stimulation (tDCS) over the left primary motor cortex on performance in intelligence tests. We chose four subtests (two each for VIQ and PIQ) of the Wechsler Adult Intelligence Scale-Chinese Revised version and randomized participants into anodal, cathodal, and sham groups. We found that anodal stimulation significantly improved performance in verbal intelligence subtests compared to cathodal and sham stimulation, while performance intelligence subtest scores did not change in any stimulation condition. These findings suggest that the excitation level of the left primary motor cortex has a unique effect on verbal intelligence. Frontiers Media S.A. 2022-05-26 /pmc/articles/PMC9177941/ /pubmed/35693542 http://dx.doi.org/10.3389/fnhum.2022.888590 Text en Copyright © 2022 Huang, Zhang, Zhang and Mai. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Neuroscience
Huang, Yifan
Zhang, Yinling
Zhang, Yizhe
Mai, Xiaoqin
Effects of Transcranial Direct Current Stimulation Over the Left Primary Motor Cortex on Verbal Intelligence
title Effects of Transcranial Direct Current Stimulation Over the Left Primary Motor Cortex on Verbal Intelligence
title_full Effects of Transcranial Direct Current Stimulation Over the Left Primary Motor Cortex on Verbal Intelligence
title_fullStr Effects of Transcranial Direct Current Stimulation Over the Left Primary Motor Cortex on Verbal Intelligence
title_full_unstemmed Effects of Transcranial Direct Current Stimulation Over the Left Primary Motor Cortex on Verbal Intelligence
title_short Effects of Transcranial Direct Current Stimulation Over the Left Primary Motor Cortex on Verbal Intelligence
title_sort effects of transcranial direct current stimulation over the left primary motor cortex on verbal intelligence
topic Neuroscience
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9177941/
https://www.ncbi.nlm.nih.gov/pubmed/35693542
http://dx.doi.org/10.3389/fnhum.2022.888590
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