Eimer M, Schlaghecken F
Department of Psychology, Birkbeck College, University of London, Malet Street, London WC1E 7HX, England.
J Mot Behav. 2001 Mar;33(1):16-26. doi: 10.1080/00222890109601899.
In 2 experiments (N = 10, Experiment 1; N = 16, Experiment 2), the authors investigated whether evidence for response facilitation and subsequent inhibition elicited by masked prime stimuli can be observed for output modalities other than manual responding. Masked primes were followed by target stimuli that required a 2-choice manual, saccadic, or vocal response. Performance was measured for compatible trials in which primes and targets were identical and for incompatible trials in which they were mapped to opposite responses. When primes were presented centrally, performance benefits were obtained for incompatible trials; whereas for peripherally presented primes, performance benefits were found in compatible trials. That pattern of results was obtained for manual responses and for saccadic eye movements (Experiment 1), demonstrating that those effects are not mediated by specialized dorsal pathways involved in visuomanual control. An analogous pattern of effects was found when manual and vocal responses were compared (Experiment 2). Because vocal responding is controlled by the inferotemporal cortex, that result shows that prime-target compatibility effects are not primarily mediated by the dorsal stream, but appear to reflect modality-unspecific visuomotor links that allow rapid activation of motor responses that may later be subject to inhibition.
在两项实验中（实验1，N = 10；实验2，N = 16），作者研究了除手动反应外，对于其他输出方式，是否能观察到由掩蔽启动刺激引发的反应促进及后续抑制的证据。掩蔽启动刺激之后呈现的目标刺激要求进行二选一的手动、扫视或发声反应。对启动刺激与目标刺激一致的相容试验以及启动刺激与目标刺激映射到相反反应的不相容试验的表现进行了测量。当启动刺激在中央呈现时，不相容试验中获得了表现优势；而当启动刺激在周边呈现时，相容试验中发现了表现优势。手动反应和扫视眼动（实验1）都得到了这样的结果模式，表明这些效应不是由参与视觉手动控制的专门背侧通路介导的。在比较手动和发声反应时（实验2）也发现了类似的效应模式。由于发声反应由颞下皮质控制，该结果表明启动刺激 - 目标刺激的相容性效应并非主要由背侧通路介导，而是似乎反映了模式非特异性的视觉运动联系，这种联系允许快速激活随后可能会受到抑制的运动反应。
