Definition of Babinski reflex in English:

Babinski reflex

Pronunciation /bəˈbinskē ˌrēfleks/ /bəˈbɪnski ˌriflɛks/


  • 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.’
    • ‘But the two are not entirely the same as the Babinski reflex evaluates the fanning of the large toe and animals do not have this.’
    • ‘The Babinski reflex is not, in and of itself, diagnostic for a particular condition.’


Named for Joseph François Felix Babinski (1857–1932), French neurologist.