A reflex action in which the big toe remains extended or extends itself when the sole of the foot is stimulated, abnormal except in young infants.
- He realized since 1896 that the Babinski reflex was part of the flexor reflex synergy.
- Because of the erroneous assumption that the change in the Babinski reflex was necessarily beyond an individual's volitional control, the experimenters had not employed a control group.
- The deep reflexes were hyperactive; the Babinski reflexes were positive.
Named for Joseph François Felix Babinski (1857–1932), French neurologist.
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