A PSYCHOPHYSIOLOGICAL INVESTIGATION OF THE CONTINUOUS-FLOW MODEL OF HUMAN INFORMATION-PROCESSING
A PSYCHOPHYSIOLOGICAL INVESTIGATION OF THE CONTINUOUS-FLOW MODEL OF HUMAN INFORMATION-PROCESSING
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DOI：
10.1037/0096-1523.11.5.529
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发表时间：
1985-01-01
影响因子：
2.1
通讯作者：
DONCHIN, E
中科院分区：
文献类型：
--
作者：
COLES, MGH;GRATTON, G;DONCHIN, E
12名受试者通过用左手或右手挤压测力计来对目标字母“H”或“S”做出反应。目标可能被兼容（例如HH H HH）或不兼容噪声（SS H SS）字母包围。事件相关脑电位的P300分量和正确和不正确的肌电图和挤压活动的措施被用来研究刺激评估和响应相关的过程。当存在不正确的挤压活动时，正确反应的执行时间延长，表明反应竞争的过程。这个过程更常发生在不相容的噪音条件下，这也与延迟的P300有关。因此，噪声/兼容性操纵影响刺激评价和反应竞争过程。相比之下，在一半的试验中，在阵列呈现之前的警告音增加了响应速度，而不影响评估时间。这些数据表明，外显行为反应的潜伏期和准确性是（a）由逐渐积累证据的评估过程控制的反应激活过程，（B）独立于刺激评估的反应启动过程，以及（c）反应竞争过程的函数。
Twelve subjects responded to target letters “H” or “S” by squeezing dynamometers with the left or right hand. Targets could he surrounded by compatible (eg, HH H HH) or incompatible noise (SS H SS) letters. Measures of the P300 component of the event-related brain potential and of correct and incorrect electromyographic and squeeze activity were used to study stimulus evaluation and response-related processes. When incorrect squeeze activity was present, execution of the correct response was prolonged, indicating a process of response competition. This process occurred more often under incompatible noise conditions, which were also associated with a delayed P300. Thus, the noise/compatibility manipulation influenced both stimulus evaluation and response competition processes. In contrast, a warning tone that preceded array presentation on half the trials, increased response speed without influencing evaluation time. The data suggest that the latency and accuracy of overt behavioral responses are a function of (a) a response activation process controlled by an evaluation process that accumulates evidence gradually,(b) a response priming process that is independent of stimulus evaluation, and (c) a response competition process.