Dramatic physiological and behavioural changes occur during the transition from wakefulness to sleep. The process is regarded as a grey area of consciousness between attentive wakefulness and slow wave sleep. Although there is evidence of neurophysiological integration decay as signalled by sleep EEG elements, changes in power spectra and coherence, thalamocortical connectivity in fMRI, and single neuron changes in firing patterns, little is known about the cognitive and behavioural dynamics of these transitions. Hereby we revise the body and brain physiology, behaviour and phenomenology of these changes of consciousness and propose an experimental framework to integrate the two aspects of consciousness that interact in the transition, wakefulness and awareness.

中文翻译：

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过渡到睡眠过程中的认知过程。

从清醒到睡眠的过渡过程中会发生剧烈的生理和行为变化。该过程被视为意识清醒和慢波睡眠之间的灰色区域。尽管有证据表明睡眠脑电图元素，功率谱和相干性变化，fMRI中丘脑皮层连通性以及发射模式中的单个神经元变化表明神经生理学整合衰退，但对于这些转变的认知和行为动力学知之甚少。因此，我们修改了这些意识变化的身体和大脑的生理，行为和现象学，并提出了一个实验框架，以整合意识的两个方面，这些方面在转变，觉醒和意识方面相互作用。