Palmomental reflex

The palmomental reflex (PMR) is a primitive reflex consisting of a twitch of the chin muscle elicited by stroking a specific part of the palm. It is present in infancy and disappears as the brain matures during childhood but may reappear due to processes that disrupt the normal cortical inhibitory pathways. Therefore it is an example of a frontal release sign.

单词	Palmomental reflex
释义	Palmomental reflex 英语百科 Palmomental reflex The palmomental reflex (PMR) is a primitive reflex consisting of a twitch of the chin muscle elicited by stroking a specific part of the palm. It is present in infancy and disappears as the brain matures during childhood but may reappear due to processes that disrupt the normal cortical inhibitory pathways. Therefore it is an example of a frontal release sign.
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