Fitzpatrick Richard C, Marsden Jon, Lord Stephen R, Day Brian L
Prince of Wales Medical Research Institute and University of New South Wales, Sydney, Australia.
Neuroreport. 2002 Dec 20;13(18):2379-83. doi: 10.1097/00001756-200212200-00001.
Psychophysical experiments identified effects of galvanic vestibular stimulation (GVS) on the perception of whole-body angular rotation. Subjects lay supine on a platform that could rotate about a vertical axis through the vestibular axis so that linear movements were excluded. Movements were applied sufficiently above perception threshold to enable a reliable report of direction and movement size. In some trials, binaural GVS was applied concurrently at 1-2 mA. When GVS that was incongruent with the movement was applied, subjects reported lesser spin, on average cancelling the movement perception. When the GVS and movement were congruent, subjects reported greater spin. We conclude that GVS produces a vestibular signal of rotation, probably though an effect on semicircular canals.
心理物理学实验确定了直流电前庭刺激（GVS）对全身角旋转感知的影响。受试者仰卧在一个可以绕通过前庭轴的垂直轴旋转的平台上，从而排除线性运动。运动的施加幅度足够高于感知阈值，以便能够可靠地报告方向和运动幅度。在一些试验中，以1 - 2毫安的电流同时施加双耳GVS。当施加与运动不一致的GVS时，受试者报告的旋转感较小，平均而言抵消了运动感知。当GVS与运动一致时，受试者报告的旋转感更大。我们得出结论，GVS可能通过对半规管的影响产生一种旋转前庭信号。
