Motor Development

Question 1

Describe primitive reflexes

Answer 1

Specific response to specific stimulus

Thought to be for survival

Present from 4 months prior to birth to 4-6 months after birth

Subcortical

Question 2

Describe moro reflex

Answer 2

Extension of head –> Extension, flexion of arms, legs

Question 3

Describe grasp reflex

Answer 3

Finger in palm –> hand, elbow, shoulder flex

Question 4

Describe rooting reflex

Answer 4

Cheek stimulus –> turn mouth towards that side

Question 5

Describe trunk incurvation reflex

Answer 5

Withdrawal from stroking along ventral surface

Question 6

Describe placing reflex

Answer 6

Steps up when dorsum of foot is stimulated

Question 7

Describe tonic neck reflex

Answer 7

Fencing posture when supine

Question 8

Describe parachute reflex

Answer 8

Simulate fall –> extends arms

This reflex never disappears

Question 9

What did Esther Thelen discover with infants that lost stepping reflex?

Answer 9

Put them into the water

Diminution of primitive stepping reflex related to morphological factors, not simply neurological

Question 10

What did Scott Zelazo discover?

Answer 10

If hierarchical beliefs were accurate, infants shouldn’t have developed gait until reflexes were integrated

Question 11

What did Prechtl research?

Answer 11

Fetal movement research

Question 12

What did Milani-Comparetti discover?

Answer 12

Primary motor patterns

Baby is active with functional movement in utero