More recently Benjamin Libet et al. (1979) have shown that it can take 0.5 seconds before a stimulus becomes part of conscious experience even though subjects can respond to the stimulus in reaction time tests within 200 milliseconds.
最近Benjamin Libet等人（1979）研究发现，一个刺激成为意识经验的一部分之前大概需要0.5秒，即便在这个反应时间测试中，被试者可以在200毫秒内对刺激作出反应。