Duysens J, Orban G A, Cremieux J, Maes H
Vision Res. 1985;25(2):171-8. doi: 10.1016/0042-6989(85)90110-5.
In order to evaluate their possible role in visible persistence, cortical cells from area 17 of the cat were investigated with a stationary light bar flashed for different durations. Thirteen out of 72 cells with non-overlapping On and Off subregions were able to respond to the briefest On stimulus (12.5 msec) for low and moderate contrasts. The responses of these cells outlasted brief On stimuli and this neural persistence increased as the On duration was shortened, mimicking the inverse duration effect of visible persistence. The 30 cells with overlapping On and Off subregions were all able to respond to brief stimuli but their neural persistence was independent of stimulus duration. At very high contrast levels, the inverse duration effect, observed in cells with non-overlapping subregions, disappeared since the On responses were followed by Off rebound discharges regardless of stimulus duration. It is suggested that the latter responses are a possible cortical equivalent of positive afterimages.
为了评估它们在视觉暂留中可能发挥的作用，研究人员使用固定的光条以不同持续时间闪烁，对猫17区的皮层细胞进行了研究。在72个具有不重叠开和关子区域的细胞中，有13个能够对低对比度和中等对比度下最短的开刺激（12.5毫秒）做出反应。这些细胞的反应持续时间超过了短暂的开刺激，并且随着开刺激持续时间的缩短，这种神经暂留现象增强，类似于视觉暂留的反持续时间效应。30个具有重叠开和关子区域的细胞都能够对短暂刺激做出反应，但它们的神经暂留与刺激持续时间无关。在非常高的对比度水平下，在具有不重叠子区域的细胞中观察到的反持续时间效应消失了，因为无论刺激持续时间如何，开反应之后都会出现关反弹放电。研究表明，后一种反应可能是皮层中与正后像相当的现象。
