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Babinski reflex


from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. 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 it is usually associated with a disturbance of the pyramidal tract in children and adults. Also called Babinski sign, Babinski's sign.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. An abnormal plantar reflex in which the hallux moves upwards, indicative of motor neuron damage.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. extension upward of the toes when the sole of the foot is stroked firmly on the outer side from the heel to the front; normal in infants under the age of two years but a sign of brain or spinal cord injury in older persons


After Joseph François Felix Babinski (1857-1932), French neurologist.
(American Heritage® Dictionary of the English Language, Fourth Edition)
After Joseph Babinski (1857–1932), French neurologist. (Wiktionary)


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