PROBLEM TO BE SOLVED: To provide an electrode for transcranial electric stimulation capable of suppressing current leakage, thereby reducing an amperage and efficiently stimulating a brain surface to accurately perform a motion induction potential inspection.SOLUTION: An electrode holder 4 covering the proximal end side of a spiral electrode needle 3 in a grippable manner comprises an abutting surface 43 capable of abutting on the surface of the head skin. The electrode needle 3 comprises a puncture part 32 exposed from the abutting surface 43 of the electrode holder 4. The puncture part 32 comprises an insulation part 320 and a distal end conduction part 321. The puncture depth dimension B of the puncture part 32 corresponds to a length dimension from the surface of the head skin to the cranial bone.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2019,JPO&INPIT【課題】電流漏れを抑え、電流量を低減し、脳表を効率よく刺激して精度の高い運動誘発電位検査を行うことができる経頭蓋電気刺激用電極を提供する。【解決手段】螺旋状の電極針3の基端側を把持可能に覆う電極ホルダ4は、頭皮表面に当接可能となる当接面43を備える。電極針3は、電極ホルダ4の当接面43から露出する穿刺部32を備える。穿刺部32は、絶縁部320と、先端導電部321とを備える。穿刺部32の穿刺深さ寸法Bは、頭皮表面から頭蓋骨に至る長さ寸法に対応する。【選択図】図2
