CAJ | 학술논문

里贝特是人类意识和自由意志的实验研究领域的一个卓越的、先驱性的神经科学家。里贝特的意识研究工作涉及如下四个方面（1）关于意识研究的认识论原则；（2）对意识现象本性的界定；（3）意识机制的时控理论；（4）对自由意志的阐释和有意识的心智场理论。里贝特的意识研究独树一帜，其时控理论具有坚实可信的实验证据，它从时间维度揭示了有意识的主观体验以及无意识的心智功能与神经活动之间的时间机制。
리패특시인류의식화자유의지적실험연구영역적일개탁월적、선구성적신경과학가。리패특적의식연구공작섭급여하사개방면（1）관우의식연구적인식론원칙；（2）대의식현상본성적계정；（3）의식궤제적시공이론；（4）대자유의지적천석화유의식적심지장이론。리패특적의식연구독수일치，기시공이론구유견실가신적실험증거，타종시간유도게시료유의식적주관체험이급무의식적심지공능여신경활동지간적시간궤제。
B. Libet is a pioneering neuroscientist in experimental research of human consciousness and free will. An epitome of all hislife - work in consciousness studies can be found in his later book titled Mind Time. The Temporal Factor in Consciousness. His best -known work is his experimental research on free will and his interpretation of the experimental results, but the core of all his works con-sists in the discovery of the time factor in consciousness - that is, the time - on theory of awareness - and its rich implications. His re-search on free will has arisen partly from the time - on theory of awareness. B. Libet started his consciousness studies from the fundamental question of ＂how are brain activities correlated with conscious ex-periences or how do they give rise to conscious experiences？＂ To address the question, B. Libet expanded his research into four subjectmatters （1） epistemological principles in consciousness studies; （2） how to define the phenomenal nature of consciousness; （3） timemechanism of consciousness; （4） free will and a solution to the ＂hard question＂ of consciousness. In terms of the integration and com-pleteness of investigation of consciousness, B. Libet＇s work is unique and distinct, especially in the empirical positivity and predictabili-ty. For the experimental approach to the problem of how to study the relationship between the brain and conscious experience, B. Libetset out two epistemological principles that must be followed ： the introspective report as the operational criterion and non - a - priori rulesfor mind - brain relationship. Based on the experimental discovery of the time factor in consciousness, B. Libet proposed a time - ontheory of consciousness, and elucidated the widespread impact of the time factor on human mental functions. The time - on theory hasthree simple components ：（ 1 ） To produce a conscious awareness of a sensory stimulus, appropriate brain activities must proceed for aminimum duration of about 500 millisecond （when the event is near threshold）. （2） The appearance of a conscious experience has anall - or - nothing character. That is, there is no reportable conscious awareness of an event even if the appropriate brain activities persistfor as much as 90 percent of the 500 millisecond required for actual threshold awareness. （3） Although when these same brain activitieshave durations shorter than those required for the production of awareness, they could be involved in producing an unconscious mentalfunction without awareness. Partly based on the time factor in consciousness, B. Libet made a series of ingenious experiments of the sequence of free, voluntaryacts, and gave an account of the results of those experiments. He then made a conclusion that the volitional process is initiated uncon-sciously, the conscious will could decide to allow the volitional process to go to completion, resulting in the motor act itself. In otherwords, the conscious will can block or＂ veto＂ the process, so that no motor act occurs. B. Libet conceived conscious experience as amental field, proposing a conception of CMF （conscious mental field） so as to address and solve the problem of unity and causality ofconscious experiences.