or Babinski reflex
a reflex extension of the great toe with flexion of the other toes, evoked by stroking the sole of the foot: normal in infants but otherwise denoting central nervous system damage.
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Compare plantar reflex.
Origin of Babinski's reflex
named after J. F. F. Babinski (died 1932), French neurologist
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
An extension of the great toe, sometimes with fanning of the other toes, in response to stroking of the sole of the foot. It is a normal reflex in infants, but is associated with a disturbance of the pyramidal tract in children and adults.Babinski's sign toe reflex
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.