Encyclopedia of Clinical Neuropsychology

2018 Edition
| Editors: Jeffrey S. Kreutzer, John DeLuca, Bruce Caplan

Palmomental Reflex

  • Stephen P. SallowayEmail author
Reference work entry
DOI: https://doi.org/10.1007/978-3-319-57111-9_1903


The palmomental reflex is elicited by lightly scratching the palmar surface of the hand with the pointed end of a reflex hammer. If present, the ipsilateral mentalis muscle of the chin will contract. Each hand should be tested separately. It is one of the frontal release signs, primitive reflexes that are normal in infants, disappear with brain maturation allowing inhibition, and reappear (are “released”) in disorders that affect the frontal lobes.

References and Readings

  1. Goetz, C. G. (2007). Textbook of clinical neurology (3rd ed.). Philadelphia: Saunders.Google Scholar

Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Butler Hospital Alpert Medical School of Brown UniversityProvidenceUSA