Polarity-independent effects of transcranial direct current stimulation over the bilateral opercular somatosensory region: A magnetoencephalography study

Kei Nakagawa, Soichiro Koyama, Koji Inui, Satoshi Tanaka, Ryusuke Kakigi, Norihiro Sadato

研究成果: Article査読

3 被引用数 (Scopus)

抄録

The opercular somatosensory region (OP) plays an indispensable role in pain perception. In the present study, we investigated the neurophysiological effects of transcranial direct current stimulation (tDCS) over the OP. Somatosensory-evoked magnetic fields following noxious intraepidermal electrical stimulation to the left index finger (pain-SEFs) were recorded before and after tDCS with a single-blind, sham-controlled, cross-over trial design. Three tDCS conditions of left anodal/right cathodal tDCS, left cathodal/right anodal tDCS (each, 2 mA, 12 min), and sham tDCS (2 mA, 15 s) were applied. Despite the subjective pain sensation being unaltered, the two anodal (real) interventions significantly decreased OP activity associated with pain-SEFs. In conclusion, tDCS over the OP with the present parameters did not have a significant impact on pain sensation, but modulated its cortical processing.

本文言語English
ページ(範囲)838-844
ページ数7
ジャーナルNeuroreport
28
13
DOI
出版ステータスPublished - 2017

All Science Journal Classification (ASJC) codes

  • Neuroscience(all)

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