Eimer M
Department of Experimental Psychology, University of Cambridge, UK.
Acta Psychol (Amst). 1999 Apr;101(2-3):293-313. doi: 10.1016/s0001-6918(99)00009-8.
Three experiments investigated the impact of information provided by masked stimuli on motor activation. Masked primes were presented prior to target stimuli and these primes were identical to the target on compatible trials, identical to the target mapped to the opposite response on incompatible trials and task-irrelevant on neutral trials. A previous study [Eimer, M., & Schlaghecken, F. (1998). Effects of masked stimuli on motor activation: Behavioural and electrophysiological evidence. Journal of Experimental Psychology: Human Perception and Performance, 24, 1737-1747] found performance costs for compatible trials and benefits for incompatible trials. Experiment 1 showed that these effects are not due to 'perceptual repetition blindness'. Experiments 2 and 3 obtained evidence for an initial response facilitation triggered by the primes that was followed by inhibition. With short intervals between prime presentation and response execution, performance benefits were found for compatible trials and these turned into costs at longer intervals. It is argued that an early response facilitation mediated by direct perceptuo-motor links is subsequently inhibited by a central mechanism operating to prevent behaviour from being controlled by irrelevant information.
三项实验研究了掩蔽刺激所提供的信息对运动激活的影响。在目标刺激之前呈现掩蔽启动刺激，在相容试验中这些启动刺激与目标相同，在不相容试验中与映射到相反反应的目标相同，在中性试验中与任务无关。先前的一项研究[艾默尔，M.，& 施拉格肯，F.（1998年）。掩蔽刺激对运动激活的影响：行为和电生理证据。《实验心理学杂志：人类知觉与表现》，24，1737 - 1747]发现相容试验存在表现成本，不相容试验存在表现收益。实验1表明这些效应并非由于“知觉重复盲视”。实验2和3获得了证据，证明启动刺激引发了初始反应促进，随后是抑制。在启动刺激呈现与反应执行之间间隔较短时，相容试验发现了表现收益，而在间隔较长时则转变为成本。有人认为，由直接的感知 - 运动联系介导的早期反应促进随后会被一种中枢机制抑制，该中枢机制的作用是防止行为受无关信息控制。
