Infant Reflexes 1

Question 1

Asymmetrical Tonic Neck Reflex (ATNR)

Answer 1

Stimulus: head position, turned to one side
Response: arm and leg on face side are extended, arm an leg on scalp side are flexed, spine curved with convexity toward face side
Normal Age: birth to 6 months

Question 2

Symmetrical Tonic Neck Reflexion (STNR)

Answer 2

Stimulus: Head position, flexion or extension
Response: When head is in flexion, arms are flexed, legs extended. When head is in extension, arms are in extension, legs are in flexion. (BASICALLY Arms follow head, legs opposite arms)
Normal Age:6-8 months

Question 3

Tonic Labryinthine Reflex (TLR)

Answer 3

Stimulus: position labyrinth in inner ear - reflected in head position
Response: In supine, body and extremities are held in extension; in prone, body and extremities are held in flexion
Normal Age: Birth to 6 months

Question 4

Galant Reflex

Answer 4

Stimulus: Touch to skin along lateral spine from shoulder to hip
Response:Lateral flexion of trunk to side of stimulus
Normal Age: 30 weeks of gestation to 2 months

Question 5

Walking (stepping) Reflex

Answer 5

Stimulus: Supported upright position with soles of feet on firm surface
Response: Reciprocal flexion/extension of legs
Normal Age: 38 weeks gestation to 2 months