Brief visual events look briefer at locations suffering inhibition of return.
Brief visual events look briefer at locations suffering inhibition of return.
复制标题
短暂的视觉事件在受到返回抑制的地方看起来更短暂。
作者：
Osugi;T. Takeda;Y.;& Murakami;I.
我们考察了注意抑制对短暂视觉事件知觉持续时间的影响。虽然外源性线索引起的注意捕获会延长事件的感知持续时间，但外源性线索引起的注意抑制(即返回抑制：IOR)是否会影响时间知觉，目前尚不清楚。为此，空间线索任务和持续时间判断被结合起来。每项实验首先呈现三个水平排列的盒状刺激，其中一个突然闪现，作为外围提示。一秒钟后，在左边或右边的方框内出现一个填充的方块(目标)。在三分之一的实验中，靶子出现在有线索的一侧(线索状态)，在另三分之一的实验中，靶子出现在相反的一侧(无线索状态)。在其余的实验中，线索出现在中央框，目标出现在左边或右边框(中性条件)。我们使用匹配方法测量了目标在这些条件下的感知持续时间，并记录了目标开始的反应时间，就像在典型的空间线索范式中所做的那样。结果表明，在线索位置呈现的目标比在非线索位置呈现的目标持续时间更短。此外，线索靶的反应时比未线索靶的反应时长。因此，由外源性线索诱导的注意抑制缩短了被抑制位置的短暂视觉事件的感知持续时间。在起搏器-累加器框架中，这种缩短的感知持续时间可以通过增加时间单位积累的错失率或通过放慢时钟来解释。
We investigated the influence of attentional inhibition on the perceived duration of a brief visual event. Although attentional capture by an exogenous cue is known to prolong the perceived duration of such an event, it remains unclear whether the attentional inhibition by an exogenous cue (ie, inhibition of return: IOR) affects temporal perception. To this end, a spatial cuing task and duration judgment were combined. Each trial started with presentation of three horizontally aligned box-shaped stimuli, one of which was then suddenly flashed to serve as a peripheral cue. After one second, a filled square (target) was presented inside the left or right box. The target appeared in the cued side in a third of trials (cued condition), and in the opposite side in another third of trials (uncued condition). In the remaining trials, the cue appeared at the central box and the target appeared at either the left or right box (neutral condition). We measured the perceived duration of the target under these conditions using a matching method and recorded reaction times for target onset as is done in a typical spatial cuing paradigm. The results indicated that the target presented at the cued location was perceived to last shorter than that presented at the uncued location. Furthermore, the reaction time for the cued target was longer than that for the uncued target. Therefore, attentional inhibition induced by an exogenous cue contracted the perceived duration of a brief visual event at the inhibited location. In the pacemaker-accumulator framework, this shortened perceived duration can be explained by an increased miss rate of temporal-unit accumulation or by slowing down of the clock.