Babinski reflex

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Related to Joseph Francois Felix Babinski: superficial reflex

Babinski reflex

[bə′binz·kē ′ri‚fleks]
(medicine)
An abnormal reflex after infancy associated with a disturbance of the pyramidal tract, characterized by extension of the great toe with fanning of the other toes on sharply stroking the lateral aspect of the sole.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.