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首页> 外文期刊>Experimental Brain Research >Task-switching with antisaccades versus no-go trials: a comparison of inter-trial effects.
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Task-switching with antisaccades versus no-go trials: a comparison of inter-trial effects.

机译：反扫视试验与不进行试验的任务切换：审判间效果的比较。

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Antisaccades involve the suppression of a pre-potent prosaccade and a vector inversion to generate the novel ocular motor response of looking away from the target. Antisaccades have also been found to prolong the latencies of saccades in upcoming trials, an effect that we attribute to a form of immediate plasticity in the ocular motor system. Our goal was to determine whether the inter-trial effects of antisaccades were similar to that of no-go trials, where subjects must suppress making a saccade when the target appears without substituting a novel ocular motor response. We tested 12 subjects with two different blocks of saccadic trials. In one, prosaccades randomly alternated with antisaccades. In the other, prosaccades alternated with no-go trials. We analyzed the error rates and latencies of prosaccades that followed antisaccades versus no-go trials, compared to repeated prosaccades, to determine if inter-trial effects were present for both types of responses that required prosaccade suppression. No-go responses increased the error rates of prosaccades in the following trial less than antisaccades did. However, no-go trials had the same effect on the latencies of upcoming prosaccades as antisaccades. The inhibitory effect that prolongs the latencies of prosaccades after antisaccades likely stems from the need to inhibit a prosaccade, a function that is also required in no-go trials. The greater impairment of prosaccade accuracy after an antisaccade may reflect either additional control mechanisms involved in vector inversion or a different form of inhibitory control that operates during antisaccades and not during no-go responses.
机译：防扫视包括抑制有效的扫视和向量反转，以产生视线远离目标的新型眼动反应。在即将进行的试验中，还发现抗眼跳可以延长眼跳的潜伏期，我们将这种效果归因于眼动系统中立即可塑性的形式。我们的目标是确定抗扫视的试验间效果是否与不进行试验相似，在此试验中，当目标出现时，受试者必须抑制进行扫视，而不能替代新的眼动反应。我们用两个不同的扫盲试验测试了12位受试者。在其中一种情况中，pro乱与反ac乱随机交替。在其他情况下，散步交替进行不进行审判。我们比较了重复扫射与反扫射与不通过试验之后的扫射的错误率和潜伏期，以确定是否需要抑制扫射的两种类型的反应均存在试验间效果。在接下来的试验中，不做回应增加了错误的错误率，而没有错误的增加。但是，不进行试验对即将来临的扫荡的潜伏期与反扫荡的潜伏期具有相同的影响。延缓扫荡后，延长扫射潜伏期的抑制作用可能源于抑制扫射的需要，这种功能在无用试验中也需要。反扫视后对扫视精度的更大损害可能反映了矢量倒置中涉及的其他控制机制，或者反映了在反扫视期间而不是在无反应期间起作用的不同形式的抑制控制。

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