Department of Psychology, Goldsmiths, University of London, London, UK.
Psychophysiology. 2009 Nov;46(6):1258-69. doi: 10.1111/j.1469-8986.2009.00873.x. Epub 2009 Aug 17.
Although previous findings suggest that motor preparation can be initiated unconsciously, there is some debate as to whether inhibitory control can occur unconsciously. Results from research involving response conflict points to an association between inhibitory control and conscious awareness. However, no previous research has assessed whether unconscious information can influence brain activity correlates of inhibition when a response must be completely withheld. We recorded event-related potentials (ERPs) in a go/no-go task with subliminal primes and demonstrated that inhibition-related ERP components were modulated as a function of the congruency of the primes. Furthermore, these ERP modulations were directly related to the extent to which participants' performance was influenced by the primes. These findings suggest that inhibition of an impending motor action can be initiated by an unconscious stimulus.
尽管先前的研究结果表明运动准备可以无意识地启动，但对于抑制控制是否可以无意识发生仍存在一些争议。涉及反应冲突的研究结果表明，抑制控制与意识意识之间存在关联。但是，以前的研究尚未评估当必须完全抑制反应时，无意识信息是否会影响抑制的大脑活动相关性。我们在包含潜意识启动的 Go/No-go 任务中记录了事件相关电位（ERPs），并证明了抑制相关的 ERP 成分会随着启动的一致性而发生变化。此外，这些 ERP 调制与参与者的表现受启动影响的程度直接相关。这些发现表明，即将进行的运动动作的抑制可以由无意识的刺激引发。
