См.: Benjamin Libet (2004) Mind Time – The Temporal Factor in Consciousness, Harvard University Press, Chun Siong Soon, Marcel Brass, Hans-Jochen Heinze, John-Dylan Haynes (2008) Unconscious determinants of free decisions in the human brain, Nature Neuroscience, 11, 543–545, (http://www.nature.com/neuro/journal/v11/n5/full/nn.2112.html )