Harter M R, Towle V L, Zakrzewski M, Moyer S M
Electroencephalogr Clin Neurophysiol. 1977 Dec;43(6):825-36. doi: 10.1016/0013-4694(77)90005-0.
Evoked cortical potentials (VEPs) to grid patterns flashed to one eye were suppressed in amplitude when grid patterns were continuously presented to the other eye. The degree of interocular suppression of VEPs was influenced by the stereoacuity of the subjects. VEPs were obtained to each of two grid sizes flashed to one eye (individual squares subtending 15 and 60 min of arc) and changes in amplitude of these VEPs were considered as a function of four stimuli continuously presented to the other eye (diffuse light, 15, 30, and 60 min of arc squares in grids). Interocular suppression of VEPs was greater (a) when the continuously presented grid was of high (38.00 mL) as compared to low (00.38 mL) intensity, (b) when the continuous and flashed grids were of the same as compared to different sizes, and (c) in six subjects who had good as compared to six subjects who had poor binocularity. Eleven of the twleve subjects could be classified correctly as having good or poor binocularity on the basis of statistically significant interocular suppression of VEPs. The results were interpreted in terms of centrally located binocular neurons responsive to specific grid sizes or spatial frequencies and the decreased functioning of such neurons in subjects with poor binocularity.
当向一只眼睛连续呈现网格图案时，向另一只眼睛闪烁的网格图案所诱发的皮层诱发电位（VEPs）的幅度会受到抑制。VEPs的双眼间抑制程度受受试者立体视锐度的影响。分别向一只眼睛呈现两种网格尺寸（单个方块对应的视角为15和60分弧度）并记录VEPs，将这些VEPs的幅度变化视为另一只眼睛连续呈现的四种刺激（漫射光、网格中视角为15、30和60分弧度的方块）的函数。当连续呈现的网格强度高（38.00 mL）与低（00.38 mL）相比时，VEPs的双眼间抑制更大；当连续呈现的网格与闪烁的网格尺寸相同时与不同时相比，双眼间抑制更大；在立体视良好的六名受试者与立体视较差的六名受试者相比时，双眼间抑制更大。根据统计学上显著的VEPs双眼间抑制，12名受试者中有11名可以被正确分类为立体视良好或较差。这些结果是根据对特定网格尺寸或空间频率有反应的中枢性双眼神经元以及立体视较差的受试者中此类神经元功能的降低来解释的。
