Cathodal tDCS of the left posterior parietal cortex increases proprioceptive drift
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Universidade Federal de Minas Gerais
Descrição
Tipo
Artigo de periódico
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Membros da banca
Resumo
In aiming movements the limb position drifts away from the defined target after some trials without visual feedback, a phenomenon defined as proprioceptive drift (PD). There are no studies investigating the association between the posterior parietal cortex (PPC) and PD in aiming movements. Therefore, cathodal and sham transcranial direct current stimulation (tDCS) were applied to the left PPC concomitantly with the performance of movements with or without vision. Cathodal tDCS applied without vision produced a higher level of PD and higher rates of drift accumulation while it decreased peak velocity and maintained the number of error corrections, not affecting movement amplitude. The proprioceptive information seems to produce an effective reference to movement, but with PPC stimulation it causes a negative impact on position.
Abstract
Assunto
Mecânica humana, Capacidade motora, Lobo parietal, Visão
Palavras-chave
Goal-directed movement, Motor control, Parietal cor-tex, Vision
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Endereço externo
https://www.tandfonline.com/doi/full/10.1080/00222895.2018.1468311?nav=Funding