Haggard Patrick, Clark Sam, Kalogeras Jeri
Institute of Cognitive Neuroscience, University College London, 17 Queen Square, London WC1N 3AR, UK.
Nat Neurosci. 2002 Apr;5(4):382-5. doi: 10.1038/nn827.
Humans have the conscious experience of 'free will': we feel we can generate our actions, and thus affect our environment. Here we used the perceived time of intentional actions and of their sensory consequences as a means to study consciousness of action. These perceived times were attracted together in conscious awareness, so that subjects perceived voluntary movements as occurring later and their sensory consequences as occurring earlier than they actually did. Comparable involuntary movements caused by magnetic brain stimulation reversed this attraction effect. We conclude that the CNS applies a specific neural mechanism to produce intentional binding of actions and their effects in conscious awareness.
人类有“自由意志”的意识体验：我们感觉自己能够产生行动，从而影响我们的环境。在这里，我们将有意行动及其感觉后果的感知时间作为研究行动意识的一种手段。在意识觉知中，这些感知时间会相互吸引，以至于受试者会觉得自主运动发生的时间比实际时间晚，而其感觉后果发生的时间比实际时间早。由磁脑刺激引起的类似非自主运动会逆转这种吸引效应。我们得出结论，中枢神经系统应用一种特定的神经机制，在意识觉知中产生行动及其效果的意向性联结。
