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Clin Anat. 2014 Mar;27(2):201-9. doi: 10.1002/ca.22280. Epub 2013 Jun 27.

How yawning switches the default-mode network to the attentional network by activating the cerebrospinal fluid flow.

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1
20 rue de Chartres, Brou, France.

Abstract

Yawning is a behavior to which little research has been devoted. However, its purpose has not yet been demonstrated and remains controversial. In this article, we propose a new theory involving the brain network that is functional during the resting state, that is, the default mode network. When this network is active, yawning manifests a process of switching to the attentional system through its capacity to increase circulation of cerebrospinal fluid (CSF), thereby increasing clearance of somnogenic factors (prostaglandin D(2), adenosine, and others) accumulating in the cerebrospinal fluid.

KEYWORDS:

adenosine; arousal; cerebrospinal fluid; default mode network; sleep; yawning

PMID:
23813685
DOI:
10.1002/ca.22280
[Indexed for MEDLINE]
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