Journal
NEUROREPORT
Volume 16, Issue 14, Pages 1551-1555Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/01.wnr.0000177010.44602.5e
Keywords
rehabilitation; stroke; transcallosal inhibition; transcranial direct current stimulation
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Funding
- NCRR NIH HHS [K24 RR018875] Funding Source: Medline
- NHLBI NIH HHS [K30 HL04095-03] Funding Source: Medline
- NINDS NIH HHS [R01-NS 47754, R01-NS 20068] Funding Source: Medline
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Recovery of function after a stroke is determined by a balance of activity in the neural network involving both the affected and the unaffected brain hemispheres. Increased activity in the affected hemisphere can promote recovery, while excessive activity in the unaffected hemisphere may represent a maladaptive strategy. We therefore investigated whether reduction of the excitability in the unaffected hemisphere by cathodal transcranial direct current stimulation could result in motor performance improvement in stroke patients. We compared these results with excitability-enhancing anodal transcranial direct current stimulation of the affected hemisphere and sham transcranial direct current stimulation. Both cathodal stimulation of the unaffected hemisphere and anodal stimulation of the affected hemisphere (but not sham transcranial direct current stimulation) improved motor performance significantly. These results suggest that the appropriate modulation of bihemispheric brain structures can promote motor function recovery.
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