Farrell J E
J Exp Psychol Hum Percept Perform. 1984 Aug;10(4):502-11. doi: 10.1037//0096-1523.10.4.502.
A single line was presented in a succession of orientations, each orientation separated by a fixed angle and by a fixed interval of time, and subjects reported the number of successive lines that appeared to rotate together. The perceived number of rotating lines increased linearly with the rate of stimulus presentation, with a slope that was proportional to the spatial separation. The linear functions obtained in this first experiment predicted the results of a second experiment in which subjects adjusted the spatial and temporal variables to a discrimination threshold for seeing two rotating lines. If the slope of the linear functions is considered to be an estimate of the duration of visible persistence, then these results suggest that the visible persistence of a briefly presented stimulus increases with the distance separating that stimulus from other stimuli.
一条线以一系列方向呈现，每个方向之间相隔固定角度和固定时间间隔，受试者报告看起来一起旋转的连续线条数量。感知到的旋转线条数量随刺激呈现速率线性增加，其斜率与空间间隔成正比。在第一个实验中获得的线性函数预测了第二个实验的结果，在第二个实验中，受试者将空间和时间变量调整到辨别两条旋转线条的阈值。如果将线性函数的斜率视为可见持续时间的估计值，那么这些结果表明，短暂呈现的刺激的可见持续时间会随着该刺激与其他刺激之间的距离增加而增加。
