Effects of masked stimuli on motor activation: Behavioral and electrophysiological evidence
Effects of masked stimuli on motor activation: Behavioral and electrophysiological evidence
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DOI：
10.1037/0096-1523.24.6.1737
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发表时间：
1998-12-01
影响因子：
2.1
通讯作者：
Schlaghecken, F
中科院分区：
文献类型：
--
作者：
Eimer, M;Schlaghecken, F
三个实验探讨了未感知事件对反应激活的影响。蒙面质数出现在目标面前。在相容试验中，启动物和目标物是相同的；在不相容的试验中，他们被分配了相反的反应。强迫选择表现表明，掩蔽程序阻止了启动识别，但显性表现和运动激活（由侧化准备电位（LRP）反映）受到启动的系统影响。这些影响的方向是出乎意料的：相容试验的性能成本和不相容试验的性能收益是相对于中性试验条件获得的。LRP显示了一个连续的运动激活模式。反应的部分激活对应于启动，随后是一个反向激活模式。有人认为，这些影响主要反映了最初由启动触发的反应的抑制。
Three experiments investigated the influence of unperceived events on response activation. Masked primes were presented before a target. On compatible trials, primes and targets were identical; on incompatible trials, opposite responses were assigned to-them. Forced-choice performance indicated that prime identification was prevented by the masking procedure, but overt performance and motor activation as mirrored by the lateralized readiness potential (LRP) were systematically influenced by the prime. The direction of these effects was unexpected: Performance costs for compatible and performance benefits for incompatible trials were obtained relative to a neutral trial condition. The LRP revealed a sequential pattern of motor activation. A partial activation of the response corresponding to the prime was followed by a reverse activation pattern. It is argued that these effects primarily reflect an inhibition of the response initially triggered by the prime.