Department of Mathematics, King's College London, UK.
Phys Life Rev. 2005 Mar;2(1):1-45. doi: 10.1016/j.plrev.2004.12.001.
A review is given of recent developments in our scientific understanding of consciousness to help guide further progress, leading to a possible final answer to the question of how the brain may create consciousness. The review commences with a brief description of the nature of consciousness, and moves to an overview of various approaches presently being pursued to understand it (quantum mechanics, 40-Hz, dynamical systems theory and complexity, narrative centre of gravity, global workspace, relational mind). To help move the discussion forward we use the fact that attention acts as the gateway to consciousness, implying the need to analyze attention most closely. An engineering control approach is introduced to model the movement of attention, based on experimental data indicating separate sites for attention modulation and for the creation of that modulation: and using the analogy with motor control in the brain, to which an engineering approach has already been applied by others. Simulation and brain imaging results support the presence of several of the relevant attention control modules in the brain. The attention control framework is extended to analyze how consciousness could arise during attentive processing, in terms of the COrollary Discharge of Attention Movement (CODAM) model. The relation between the CODAM model of consciousness and modern approaches to consciousness in the philosophy of mind is then briefly described. An overall summary and a program of future explorations of the CODAM model conclude the review.
本文回顾了我们对意识的科学理解的最新进展,以帮助指导进一步的研究,从而为大脑如何产生意识这一问题提供可能的最终答案。本文首先简要描述了意识的本质,然后概述了目前正在探索的理解意识的各种方法(量子力学、40Hz、动力系统理论和复杂性、叙事重心、全局工作空间、关系思维)。为了推动讨论的进行,我们利用注意力是意识的门户这一事实,暗示需要最密切地分析注意力。本文引入了一种基于实验数据的工程控制方法来模拟注意力的移动,这些数据表明注意力的调节和调节的产生有不同的部位:并且使用与大脑中的运动控制的类比,这已经被其他人应用于工程方法。模拟和脑成像结果支持了大脑中存在几个相关的注意力控制模块。然后,本文将注意力控制框架扩展到分析在注意力加工过程中意识是如何产生的,这是基于 COrollary Discharge of Attention Movement(CODAM)模型。随后,简要描述了 CODAM 意识模型与现代心智哲学中意识方法之间的关系。本文对 CODAM 意识模型进行了全面总结,并提出了未来探索该模型的计划。