Yarrow Kielan, Whiteley Louise, Haggard Patrick, Rothwell John C
University College London, London, England.
Percept Psychophys. 2006 Oct;68(7):1217-26. doi: 10.3758/bf03193722.
Subjects typically experience the temporal interval immediately following a saccade as longer than a comparable control interval. One explanation of this effect is that the brain antedates the perceptual onset of a saccade target to around the time of saccade initiation. This could explain the apparent continuity of visual perception across eye movements. This antedating account was tested in three experiments in which subjects made saccades of differing extents and then judged either the duration or the temporal order of key events. Postsaccadic stimuli underwent subjective temporal lengthening and had early perceived onsets. A temporally advanced awareness of saccade completion was also found, independently of antedating effects. These results provide convergent evidence supporting antedating and differentiating it from other temporal biases.
受试者通常会觉得扫视之后的时间间隔比类似的对照间隔更长。对此效应的一种解释是，大脑会将扫视目标的感知起始时间提前到扫视开始左右的时间。这可以解释眼动过程中视觉感知的明显连续性。在三个实验中对这种提前假说进行了测试，在这些实验中，受试者进行不同幅度的扫视，然后判断关键事件的持续时间或时间顺序。扫视后的刺激经历了主观时间延长，并且有较早的感知起始时间。还发现了对扫视完成的时间提前的意识，这与提前效应无关。这些结果提供了趋同的证据，支持提前假说并将其与其他时间偏差区分开来。
