Partial advance information and response preparation: Inferences from the lateralized readiness potential
Partial advance information and response preparation: Inferences from the lateralized readiness potential
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DOI：
10.1037/0096-3445.125.3.307
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发表时间：
1996-09-01
影响因子：
4.1
通讯作者：
Ulrich, R
中科院分区：
文献类型：
--
作者：
Leuthold, H;Sommer, W;Ulrich, R
如果在信号出现之前就预先提供了即将到来的运动的信息，那么对信号的响应速度就会更快。虽然这种预防效果是公认的，但这种在反应石灰（RT）中的节省在信息处理系统中的位置是有争议的。一些作者声称，这种前兆效应存在于运动水平，而另一些人则认为存在于非运动位点。本实验利用侧化准备电位（LRP）的起始潜伏期来定位诱发效应。高度相容（实验1）和不相容（实验2）刺激-反应映射的两个实验结果表明，这种效应至少部分存在于rt的运动部分。此外，信号出现前的LRP振幅随着预先信息的增加而增加，支持肌肉特异性准备假说。
Response speed to a signal is faster when advance information about the forthcoming movement is provided before signal onset. Although this precuing effect is well established, the location of this saving in reaction lime (RT) in the information-processing system is controversial. Some authors have claimed that the precuing effect resides at a motoric level, whereas others have suggested a nonmotoric locus. The present experiments used onset latencies of the lateralized readiness potential (LRP) to locate the precuing effect. The results of 2 experiments with a highly compatible (Experiment 1) and with an incompatible (Experiment 2) stimulus-response mapping indicate that this effect resides, at least partially, in the motoric portion of RT. In addition, the LRP amplitude before signal appearance increased with the amount of advance information, supporting a muscle-specific preparation hypothesis.