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Saccades operate in violation of Hick’s law

机译：扫视违反希克法律

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摘要

Hick’s law states that response times (RTs) increase in proportion to the logarithm of the number of potential stimulus-response (S-R) alternatives. We hypothesized that time-consuming processes associated with response selection contribute significantly to this effect. We also hypothesized that the latency of saccades might not conform to Hick’s law since visually guided saccades can be automatically selected using topographically organized pathways that convert spatially coded visual activity into spatially coded motor commands. We evaluated these hypotheses by examining three response modalities for their compliance with Hick’s law: saccades directed to a visual target (prosaccades), saccades directed away from the target (antisaccades) and manual responses in which each digit was associated with a specific target location (key-press responses). Both antisaccades and key-press responses conformed to Hick’s law but saccade latencies were completely unaffected by S-R uncertainty. The significance of these findings is considered in terms of the processes of response selection and premotor programming.
机译：希克定律指出，响应时间（RTs）与潜在刺激响应（S-R）替代方案数量的对数成正比。我们假设与响应选择相关的耗时的过程对这种效果有很大贡献。我们还假设，扫视的潜伏期可能不符合希克定律，因为可以使用地形组织的路径自动选择视觉引导的扫视，这些路径将空间编码的视觉活动转换为空间编码的运动命令。我们通过检查三种响应方式是否符合希克定律来评估这些假设：针对视觉目标的扫视（扫视），远离目标的扫视（反扫视）以及每个数字与特定目标位置相关联的手动响应（按键响应）。反扫视和按键响应均符合希克定律，但扫视潜伏期完全不受S-R不确定性的影响。这些发现的意义是根据反应选择和运动前编程的过程来考虑的。

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