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首页> 外文期刊>Journal of vision >Modulation of saccade latencies by hand action coding
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Modulation of saccade latencies by hand action coding

机译：通过手动编码调制扫视潜伏期

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Previous studies indicated that saccade latencies are affected by the spatial compatibility between the target position on the screen and the position of a static hand. Further, the modulation of saccade latencies depended on the delay between fixation point offset and target onset. With a 0-ms delay, saccades were slower toward a target close than opposite to the hand location (eye-hand proximity interference), while the opposite pattern was found for a 1000-ms delay (eye-hand proximity facilitation). Time-consuming competition for attentional processes between eye and hand were evoked to account for these results. In the present study, we opposed a code occupation hypothesis (COH) to this attentional explanation. According to COH, once a code is bound to a current action, all other access to this code will be temporarily delayed. We varied the target location with respect to the hand. The hand was laid at a fixed location on the left or right and the target was presented at different eccentricities to the left or right of the screen center. The results indicated that the saccadic modulation did not depend on the spatial proximity between the hand and the target. Rather, similar eye-hand interference (0-ms delay) and facilitation (1000-ms) were found for all targets sharing the same hemi-space as the hand. In agreement with the code occupation hypothesis, the saccadic modulation in the presence of a static hand depended on whether the saccade shared or not the hand-related action code.
机译：先前的研究表明，扫视潜伏期受屏幕上目标位置和静态手的位置之间的空间兼容性影响。此外，扫视潜伏期的调制取决于注视点偏移和目标发作之间的延迟。延迟为0毫秒时，向目标附近的扫视运动要比与手位置相反（眼手接近干扰）慢，而在1000毫秒时延时发现相反的模式（眼手接近促进）。导致费时的眼睛和手之间的注意过程竞争来解释这些结果。在本研究中，我们反对代码占用假设（COH）对此注意的解释。根据COH的说法，一旦将代码绑定到当前操作，对该代码的所有其他访问将被暂时延迟。我们根据手改变了目标位置。将手放在左侧或右侧的固定位置，然后将目标以不同的偏心率显示在屏幕中心的左侧或右侧。结果表明，声调调制不取决于手与目标之间的空间接近度。相反，对于与手共享相同半空间的所有目标，都发现了类似的眼手干扰（延迟0毫秒）和易化性（1000毫秒）。与代码占用假设相一致，在存在静态手的情况下，眼跳调制取决于扫视是否共享与手相关的动作代码。

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