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
N
the reflex curling upwards of the toes (instead of inwards) when the sole of the foot is stroked, normal in infants below the age of two but a pathological condition in adults 巴宾斯基反射
[physiol]