McSorley Eugene, McCloy Rachel, Williams Louis
School of Psychology & Clinical Language Sciences, University of Reading, Reading, Berkshire, United Kingdom.
PLoS One. 2016 Dec 22;11(12):e0168724. doi: 10.1371/journal.pone.0168724. eCollection 2016.
Sequences of saccades have been shown to be prepared concurrently however it remains unclear exactly what aspects of those saccades are programmed in parallel. To examine this participants were asked to make one or two target-driven saccades: a reflexive saccade; a voluntary saccade; a reflexive then a voluntary saccade; or vice versa. During the first response the position of a second target was manipulated. The new location of the second saccade target was found to impact on second saccade latencies and second saccade accuracy showing that some aspects of the second saccade program are prepared in parallel with the first. However, differences were found in the specific pattern of effects for each sequence type. These differences fit well within a general framework for saccade control in which a common priority map for saccade control is computed and the influence of saccade programs on one another depends not so much on the types of saccade being produced but rather on the rate at which their programs develop.
扫视序列已被证明是同时准备的，然而，这些扫视的确切哪些方面是并行编程的仍不清楚。为了研究这一点，要求参与者进行一到两次目标驱动的扫视：一次反射性扫视；一次自主性扫视；一次反射性扫视然后一次自主性扫视；或者反之。在第一次反应期间，操纵第二个目标的位置。发现第二个扫视目标的新位置会影响第二个扫视的潜伏期和准确性，这表明第二个扫视程序的某些方面是与第一个扫视并行准备的。然而，在每种序列类型的具体效应模式中发现了差异。这些差异很好地符合扫视控制的一般框架，在该框架中，计算出用于扫视控制的共同优先级图，并且扫视程序之间的相互影响与其说是取决于所产生的扫视类型，不如说是取决于它们的程序发展速度。
