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Systematic Review

Intervention Effect of Non-Invasive Brain Stimulation on Cognitive Functions among People with Traumatic Brain Injury: A Systematic Review and Meta-Analysis

1
Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong, China
2
Department of Behavioural Sciences, Kwame Nkrumah University of Science and Technology, Ashanti, Ghana
3
Department of Psychiatry, The University of Hong Kong, Hong Kong, China
*
Author to whom correspondence should be addressed.
Academic Editors: Manuel de Vega, Sara Borgomaneri and Roberta Sellaro
Brain Sci. 2021, 11(7), 840; https://doi.org/10.3390/brainsci11070840
Received: 9 May 2021 / Revised: 14 June 2021 / Accepted: 19 June 2021 / Published: 24 June 2021
(This article belongs to the Special Issue Neuromodulation of Language, Cognition and Emotion)
This systematic review and meta-analysis aggregated and examined the treatment effect of non-invasive brain stimulation (NIBS) (transcranial direct current stimulation and transcranial magnetic stimulation) on cognitive functions in people with traumatic brain injury (TBI). A systematic search was conducted using databases (PubMed, Web of Science, Scopus, PsycINFO, EMBASE) for studies with keywords related to non-randomized and randomized control trials of NIBS among people with TBI. Nine out of 1790 NIBS studies with 197 TBI participants (103 active vs. 94 sham) that met the inclusion and exclusion criteria of the present study were finally selected for meta-analysis using Comprehensive Meta-Analysis software (version 3). Results showed that the overall effect of NIBS on cognition in people with TBI was moderately significant (g = 0.304, 95% CI = 0.055 to 0.553) with very low heterogeneity across studies (I2 = 0.000, Tau = 0.000). Specifically, significant and marginally significant moderate effect sizes were found for cognitive sub-domains including attention, memory, and executive function. The present findings suggest that NIBS is moderately effective in improving cognitive functions among people with TBI. In particular, NIBS may be used as an alternative and/or an adjunct treatment to the traditional approach in rehabilitating cognitive functions in people with TBI. View Full-Text
Keywords: traumatic brain injury; cognitive functions; transcranial direct current stimulation; transcranial magnetic stimulation; non-invasive brain stimulation traumatic brain injury; cognitive functions; transcranial direct current stimulation; transcranial magnetic stimulation; non-invasive brain stimulation
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MDPI and ACS Style

Ahorsu, D.K.; Adjaottor, E.S.; Lam, B.Y.H. Intervention Effect of Non-Invasive Brain Stimulation on Cognitive Functions among People with Traumatic Brain Injury: A Systematic Review and Meta-Analysis. Brain Sci. 2021, 11, 840. https://doi.org/10.3390/brainsci11070840

AMA Style

Ahorsu DK, Adjaottor ES, Lam BYH. Intervention Effect of Non-Invasive Brain Stimulation on Cognitive Functions among People with Traumatic Brain Injury: A Systematic Review and Meta-Analysis. Brain Sciences. 2021; 11(7):840. https://doi.org/10.3390/brainsci11070840

Chicago/Turabian Style

Ahorsu, Daniel Kwasi, Emma Sethina Adjaottor, and Bess Yin Hung Lam. 2021. "Intervention Effect of Non-Invasive Brain Stimulation on Cognitive Functions among People with Traumatic Brain Injury: A Systematic Review and Meta-Analysis" Brain Sciences 11, no. 7: 840. https://doi.org/10.3390/brainsci11070840

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