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心理因果关系:一种进化视角。

Mental causation: an evolutionary perspective.

作者信息

Lacalli Thurston

机构信息

Department of Biology, University of Victoria, Victoria, BC, Canada.

出版信息

Front Psychol. 2024 Apr 29;15:1394669. doi: 10.3389/fpsyg.2024.1394669. eCollection 2024.

Abstract

The relationship between consciousness and individual agency is examined from a bottom-up evolutionary perspective, an approach somewhat different from other ways of dealing with the issue, but one relevant to the question of animal consciousness. Two ways are identified that would decouple the two, allowing consciousness of a limited kind to exist without agency: (1) reflex pathways that incorporate conscious sensations as an intrinsic component (InCs), and (2) reflexes that are consciously conditioned and dependent on synaptic plasticity but not memory (CCRs). Whether InCs and CCRs exist as more than hypothetical constructs is not clear, and InCs are in any case limited to theories where consciousness depends directly on EM field-based effects. Consciousness with agency, as we experience it, then belongs in a third category that allows for deliberate choice of alternative actions (DCs), where the key difference between this and CCR-level pathways is that DCs require access to explicit memory systems whereas CCRs do not. CCRs are nevertheless useful from a heuristic standpoint as a conceptual model for how conscious inputs could act to refine routine behaviors while allowing evolution to optimize phenomenal experience (i.e., qualia) in the absence of individual agency, a somewhat counterintuitive result. However, so long as CCRs are not a required precondition for the evolution of memory-dependent DC-level processes, the later could have evolved first. If so, the adaptive benefit of consciousness when it first evolved may be linked as much to the role it plays in encoding memories as to any other function. The possibility that CCRs are more than a theoretical construct, and have played a role in the evolution of consciousness, argues against theories of consciousness focussed exclusively on higher-order functions as the appropriate way to deal with consciousness as it first evolved, as it develops in the early postnatal period of life, or with the conscious experiences of animals other than ourselves. An evolutionary perspective also resolves the problem of free will, that it is best treated as a property of a species rather than the individuals belonging to that species whereas, in contrast, agency is an attribute of individuals.

摘要

从自下而上的进化视角审视意识与个体能动性之间的关系,这种方法与处理该问题的其他方式有所不同,但与动物意识问题相关。确定了两种使二者脱钩的方式,从而允许有限形式的意识在没有能动性的情况下存在:(1)将有意识的感觉作为内在组成部分纳入其中的反射通路(InCs),以及(2)有意识地形成条件且依赖突触可塑性但不依赖记忆的反射(CCRs)。InCs和CCRs是否不仅仅是假设性的结构尚不清楚,而且无论如何InCs都仅限于意识直接依赖基于电磁场效应的理论。我们所体验到的具有能动性的意识则属于第三类,即允许对替代行动进行刻意选择(DCs),这与CCR层面的通路的关键区别在于,DCs需要访问明确的记忆系统,而CCRs则不需要。然而,从启发式的角度来看,CCRs作为一种概念模型是有用的,它说明了有意识的输入如何在没有个体能动性的情况下作用于优化日常行为,同时允许进化优化现象体验(即感受质),这是一个有点违反直觉的结果。然而,只要CCRs不是依赖记忆的DC层面过程进化的必要前提,那么后者可能首先进化。如果是这样,意识最初进化时的适应性益处可能与其在编码记忆中所起的作用以及任何其他功能一样密切相关。CCRs不仅仅是理论结构且在意识进化中发挥了作用,这种可能性与那些专门关注高阶功能的意识理论相悖,这些理论认为高阶功能是处理意识最初进化、生命早期产后发展过程中的意识,或处理除我们自己之外的动物的有意识体验的合适方式。一种进化视角也解决了自由意志的问题,即最好将其视为一个物种的属性而非属于该物种的个体的属性,而相比之下,能动性是个体的属性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f8a1/11089241/0fe71a8646ff/fpsyg-15-1394669-g001.jpg

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