Knowing the future: partial foreknowledge effects on the programming of prosaccades and antisaccades.
Knowing the future: partial foreknowledge effects on the programming of prosaccades and antisaccades.
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了解未来：部分预知对前眼跳和反眼跳编程的影响。
DOI：
10.1016/j.visres.2010.11.006
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发表时间：
2011
期刊：
影响因子：
1.8
通讯作者：
Barton,JasonJS
中科院分区：
文献类型：
--
作者：
Abegg,Mathias;Manoach,DaraS;Barton,JasonJS
关于即将到来的试验的需求的预知可以被利用来优化行为反应。在目前的研究中，我们系统地调查了部分预知的好处-也就是说，当一些，但不是所有的方面，未来的试验是预先知道的。为此，我们使用了一个眼运动范式与水平的前视和逆视。可预测序列被用来创建三个部分的预知条件：一个与预知的刺激位置，一个与预知的任务集，一个与预知的方向所需的反应。这些进行了对比的条件下，没有预知和完全预知所有三个参数的条件。结果表明，三种类型的预知对眼跳效率的影响不同。而刺激位置的预见对效率没有影响，任务预见对效率有一定影响，反应预见与完全预见一样有效。预知对转换成本的影响一般遵循类似的模式，但对于预知可用的试验属性的转换并不特异。我们的结论是，部分预知效率有差异的影响，最一致的准备激活的运动图式提前刺激，随之而来的好处切换和重复试验。
Foreknowledge about the demands of an upcoming trial may be exploited to optimize behavioural responses. In the current study we systematically investigated the benefits of partial foreknowledge – that is, when some but not all aspects of a future trial are known in advance. For this we used an ocular motor paradigm with horizontal prosaccades and antisaccades. Predictable sequences were used to create three partial foreknowledge conditions: one with foreknowledge about the stimulus location only, one with foreknowledge about the task set only, and one with foreknowledge about the direction of the required response only. These were contrasted with a condition of no-foreknowledge and a condition of complete foreknowledge about all three parameters. The results showed that the three types of foreknowledge affected saccadic efficiency differently. While foreknowledge about stimulus-location had no effect on efficiency, task foreknowledge had some effect and response-foreknowledge was as effective as complete foreknowledge. Foreknowledge effects on switch costs followed a similar pattern in general, but were not specific for switching of the trial attribute for which foreknowledge was available. We conclude that partial foreknowledge has a differential effect on efficiency, most consistent with preparatory activation of a motor schema in advance of the stimulus, with consequent benefits for both switched and repeated trials.