オザキ　イサム   Ozaki Isamu   尾﨑　勇    所属   東邦大学  医学部 医学科    職種   研究員（寄付講座）
論文種別	原著
言語種別	英語
査読の有無	査読あり
表題	SEPS TO FINGER JOINT INPUT LACK THE N20-P20 RESPONSE THAT IS EVOKED BY TACTILE INPUTS - CONTRAST BETWEEN CORTICAL GENERATORS IN AREA-3B AND AREA-2 IN HUMANS
掲載誌名	正式名：ELECTROENCEPHALOGRAPHY AND CLINICAL NEUROPHYSIOLOGY ISSNコード：0013-4694
出版社	ELSEVIER SCI IRELAND LTD
巻・号・頁	80(6),pp.513-521
著者・共著者	JE DESMEDT,OZAKI, I
発行年月	1991/11
概要	A method using a DC servo motor is described to produce brisk angular movements at finger interphalangeal joints in humans. Small passive flexions of 2-degrees elicited sizable somatosensory evoked potentials (SEPs) starting with a contralateral positive P34 parietal response thought to reflect activation of a radial equivalent dipole generator in area 2 which receives joint inputs. By contrast, electric stimulation of tactile (non-joint) inputs from the distal phalanx evoked the usual contralateral negative N20 reflecting a tangential equivalent dipole generator in area 3b. Finger joint inputs also evoked a precentral positivity equivalent to the P22 of motor area 4, and a large frontal negativity equivalent to N30. It is suggested that natural stimulation allows human SEP components to be differentiated in conjunction with distinct cortical somatotopic projections.