Postural Reflexes Flashcards
Postural Reflex
Complex motor responses that provide automatic control of posture and balance
Type of postural reflexes
Asymmetric tonic neck reflex (ATNR)
Symmetric tonic neck reflex (STNR)
Parachute reflex
Landau reflex
Righting reflex
Type of righting reflexes
Neck righting
Body righting
Tonic labyrinthine reflex
Asymmetric tonic neck reflex
Elicited by rotation of the neck
Important for eye-hand coordination
Symmetric tonic neck reflex
- Flexion of the neck
Leads to flexion of UE and extension of LE
Symmetric tonic neck reflex
- Extension of neck
Leads to extension of UE and flexion of LE
Symmetric tonic neck reflex
Helps small infants to get on all fours as a pre-requisite to crawling
Integrates once reciprocation becomes predominant in crawling and walking
Parachute Reflex
Infant held in horizontal suspension and suddenly lowered toward the ground, arms extend in protective extension, fanning out
When does the parachute reflex appear?
8 months and never dissapears
Landau Reflex
Holding child in ventral suspension leads to whole body extension, including head/neck, trunk and upper and lower extremities
When does landau reflex appears?
Around 3 months and disappears by 2 y/o
Righting Reflexes
- Neck on body righting
Turning the head to one side will lead to ipsilateral rotation of the rest of the body as a single unit (similar to log rolling)
When is the righting reflex appears?
Present at birth, strongest at 3 months and integrates by 6 months of age
Righting Reflexes
- Neck righting integrates how?
Integrates into the body righting, where the rotation of the shlds will lead to ipsilateral rotation of the pelvis and vice versa
When does neck rightening occur?
Appears at 7-12 months
