The urgency to look: Prompt saccades to the benefit of perception
The urgency to look: Prompt saccades to the benefit of perception
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DOI：
10.1016/j.visres.2005.07.013
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发表时间：
2005-12-01
期刊：
影响因子：
1.8
通讯作者：
Chelazzi, L
中科院分区：
文献类型：
--
作者：
Montagnini, A;Chelazzi, L
研究人员已经证明，启动眼跳的敏捷性受到与视觉环境和任务有关的无数因素的调节。然而，眼球跳动实验的设计通常是错误的，以至于眼球运动表现与眼跳的自然作用分离，即为高分辨率的中心凹分析迅速提供关键的感知信息。在这里，我们证明了在眼跳着陆位置执行困难的感知判断的要求可以减少眼跳潜伏期(减少15%)并提高眼跳峰值速度。重要的是，这种影响不能用唤醒来解释，因为潜伏期的变化是特定于需要感知判断的位置的。这些结果表明，自愿性眼跳启动机制受到知觉目标的有力间接控制。(C)2005爱思唯尔有限公司。保留所有权利。
Researchers have shown that the promptness to initiate it saccade is modulated by countless factors pertaining to the Visual context and the task. However, experiments oil saccadic eye movements are Usually designed ill Such it way that ocluomotor performance is dissociated from the natural role of saccades, namely that of making crucial perceptual information rapidly available for high-resolution, foveal analysis. Here, we demonstrate that the requirement to perform a difficult perceptual judgment at the saccade landing location can reduce saccadic latency (by > 15%) and increase saccadic peak velocity. Importantly, the effect cannot be explained in terms of arousal, as latency changes are specific to the location where the perceptual judgement is required. These results indicate that mechanisms for voluntary saccade initiation are under the powerful indirect control of perceptual goals. (c) 2005 Elsevier Ltd. All rights reserved.