Infant reflex

Question 1

Asymmetrical Tonic Neck Reflex (ATNR)
Stimulus:
Response:
Normal Age:

Answer 1

Stimulus: Head position, turned to one side
Response: Arm and leg on face side are extended, arm and leg on scalp side are flexed, spine curved with convexity toward face side
Normal Age: Birth to 6 mo

Question 2

Symmetrical Tonic Neck Reflex
Stimulus:
Response:
Normal Age:

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 extended, legs are flexed
Normal Age: 6- 8 mo

Question 3

Tonic Labyrinth Reflex
Stimulus:
Response:
Normal Age:

Answer 3

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

Question 4

Galant reflex
Stimulus:
Response:
Normal Age:

Answer 4

Stimulus: touch to skin along 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

Palmar grasp reflex
Stimulus:
Response:
Normal Age:

Answer 5

Stimulus: pressure in palm on ulnar side of hand
Response: Flexion of fingers causing strong grip
Normal Age: birth to 4 mo

Question 6

Plantar grasp Reflex
Stimulus:
Response:
Normal Age:

Answer 6

Stimulus: pressure to base of toes
Response: toe flexion
Normal Age: 28 weeks of gestation to 9 mo

Question 7

Rooting reflex
Stimulus:
Response:
Normal Age:

Answer 7

Stimulus: touch on cheek
Response: turning head to same side with mouth open
Normal Age: 28 weeks of gestation to 3 mo

Question 8

Moro reflex
Stimulus:
Response:
Normal Age:

Answer 8

Stimulus: Head dropping into extension suddenly for a few inches
Response: arms abduct with fingers open, then cross trunk into adduction; cry
Normal Age: 28 weeks of gestation to 5 mo

Question 9

Startle reflex
Stimulus:
Response:
Normal Age:

Answer 9

Stimulus: loud, sudden noise
Response: Similar to Moro response but elbows remain flexed and hands closed
Normal Age: 28weeks of gestation to 5 mo

Question 10

Positive Support Reflex
Stimulus:
Response:
Normal Age:

Answer 10

Stimulus: Weight places on balls of feet when upright
Response: stiffening of legs and trunk into extension
Normal Age:35 weeks of gestation to 2 mo

Question 11

Walking (stepping) Reflex
Stimulus:
Response:
Normal Age:

Answer 11

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