"One person yawning sets off everyone else"

Perriol, M.-Pierre; Monaca, C.
January 2006
Journal of Neurology, Neurosurgery & Psychiatry;Jan2006, Vol. 77 Issue 1, p3
Academic Journal
This article discusses various issues related to role of yawning in human physiology. Yawning occurs in passive activities when it is necessary to maintain a certain level of vigilance, which is then followed by an acceleration of the electro-encephalographic rhythms. It has a non-verbal communicative status. Yawning is also a symptom in intracranial hypertension, migraine, or side effects of dopaminergic drugs. Contagious yawning is triggered by seeing, hearing, or even thinking about someone else yawning. The phenomenon has been investigated with functional magnetic resonance imaging. However, further studies are needed to explore the various aspects of contagious yawning.


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