noun
Babinski reflex; Babinski sign
A neurological reflex where the big toe extends upward and the other toes fan out when the sole of the foot is stroked; normal in infants but indicative of central nervous system damage in adults.
医師は患者の足の裏をこすってバビンスキー反射を調べた。
The doctor checked the patient's Babinski reflex by stroking the sole of the foot.
Named after the French neurologist Joseph Babinski, who described the reflex in 1896.