Pfurtscheller G, Krausz G, Neuper C
Department of Medical Informatics, Institute of Biomedical Engineering, Technical University of Graz, Austria.
J Clin Neurophysiol. 2001 Nov;18(6):559-64. doi: 10.1097/00004691-200111000-00006.
Short mechanical stimulation of the fingertip was studied in 10 subjects using 34 closely spaced EEG electrodes overlying sensorimotor areas. The tactile skin stimulation device consisted of a dot matrix printer head. Each stimulus lasted 10 msec with an interstimulus interval of 4 seconds. Tactile stimulation induced beta oscillations, which were largest in the 16 to 20-Hz band, with a maximum centered within 1 second after stimulation. These beta oscillations were found over both hemispheres with a clear dominance over the contralateral hand representation area.
在10名受试者中，使用覆盖感觉运动区的34个紧密排列的脑电图电极，研究了对指尖的短暂机械刺激。触觉皮肤刺激装置由一个点阵式打印头组成。每次刺激持续10毫秒，刺激间隔为4秒。触觉刺激诱发了β振荡，在16至20赫兹频段中最为明显，在刺激后1秒内达到最大值。这些β振荡在两个半球均有发现，且在对侧手部代表区明显占优势。
