Toward a computational theory of conscious processing.

Toward a computational theory of conscious processing.
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DOI:
10.1016/j.conb.2013.12.005
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发表时间:
2014-04
影响因子:
5.7
通讯作者:
Marti S
Marti S
中科院分区:
医学2区
文献类型:
--
作者:
Dehaene S;Charles L;King JR;Marti S

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对意识加工机制的研究已成为认知神经科学的一个富有成效的领域。在这里,我们回顾了一些最近的行为和神经科学数据,具体目标是限制现在和未来的计算理论的基础意识处理。实验结果表明,大脑的大部分计算可以在无意识模式下进行,但有意识的感知的特征是大脑信号的放大,全球传播和整合。这些数据与主要理论建议的比较表明,第一,有意识的访问必须仔细区分选择性注意;第二,有意识的感知可以比作一个非线性的决定,“点燃”一个网络的分布式区域;第三,信息被选择的有意识的感知获得访问额外的计算,包括临时维护,全球共享,灵活的路由;最后,脑信号的复杂性、远距离相关性和整合的测量提供了意识处理的可靠指标,临床上与从昏迷中恢复的患者相关。
The study of the mechanisms of conscious processing has become a productive area of cognitive neuroscience. Here we review some of the recent behavioral and neuroscience data, with the specific goal of constraining present and future theories of the computations underlying conscious processing. Experimental findings imply that most of the brain’s computations can be performed in a non-conscious mode, but that conscious perception is characterized by an amplification, global propagation and integration of brain signals. A comparison of these data with major theoretical proposals suggests that firstly, conscious access must be carefully distinguished from selective attention; secondly, conscious perception may be likened to a non-linear decision that ‘ignites’ a network of distributed areas; thirdly, information which is selected for conscious perception gains access to additional computations, including temporary maintenance, global sharing, and flexible routing; and finally, measures of the complexity, long-distance correlation and integration of brain signals provide reliable indices of conscious processing, clinically relevant to patients recovering from coma.
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