Final answer:
The plantar test assesses the movement of the toes at the plantar surface of the foot. In infants, this test assesses the extension and splaying out of the toes, known as the positive Babinski sign.
Step-by-step explanation:
The plantar test assesses the movement of the toes at the plantar surface of the foot. In this test, the examiner brushes a stimulus along the plantar surface of the foot to elicit a reflex. In adults, the movement assessed is the curling of the toes and moderate plantar flexion. In infants, the movement assessed is the extension and splaying out of the toes, which is known as the positive Babinski sign.