论文标题
突触时钟作为意识的神经基板
Synaptic clock as a neural substrate of consciousness
论文作者
论文摘要
在这项理论工作中,分析了意识的时间方面。我们从这样的观念开始,尽管有意识的经历似乎不断变化,但要有意识地认为它们必须持续一些非零的时间持续时间,这似乎构成了某些冲突。我们认为,就意识的现象学分析而言,时间方面,尤其是这种明显的冲突可能是最基本的特性,可能是任何可能的意识形式所固有的。然后概述了如何利用这种视角将意识的特性直接与学习和记忆的神经可塑性机制联系起来,并指定与信息整合过程的确切主观体验如何相关的方式。特别是,我们建议突触时钟构成意识的特定于内容的神经底物,从而解释了它与此时间方面的对应方式。然后,我们提出了一个观点,在该观点中,主观时间的矩具有不同的持续时间,具体取决于所处理的信息类型,与相应的突触时钟的时间单位成正比,并且原则上不同的是不同动物物种中不同大脑区域和神经系统的信息。讨论了这种观点对时间意识的扩展模型的关系和可能的贡献。最后,我们考虑了关于意识结构的两种替代观点,即静态和动态的观点,并主张后者,并提出,如果将变化视为唯一的维度,则可以最好地理解意识。
In this theoretical work the temporal aspect of consciousness is analyzed. We start from the notion that while conscious experience seems to change constantly, yet for any of its contents to be consciously perceived they must last for some non-zero duration of time, which appears to constitute certain conflict. We posit that, in terms of phenomenological analysis of consciousness, the temporal aspect, and this apparent conflict in particular, might be the most basic property, likely inherent to any conceivable form of consciousness. It is then outlined how taking this perspective offers a concrete way of relating the properties of consciousness directly to the neural plasticity mechanisms of learning and memory, and specifying how exactly subjective experience might be related to processes of information integration. In particular, we propose synaptic clock to constitute a content-specific neural substrate of consciousness, explaining how it would correspond to this temporal aspect. Then, we propose a viewpoint, in which moments of subjective time have different durations, depending on the type of information processed, proportional to the time units of corresponding synaptic clocks, and being in principle different for different brain regions and nervous systems in different animal species. Relation and possible contributions of this viewpoint to the extensional model of time consciousness are discussed. Finally, we consider the two alternative views on the structure of consciousness, namely a static and a dynamic one, and argue in favor of the latter, proposing that consciousness can be best understood if change is considered its only dimension.