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Neuroanatomy II

Primitive Reflexes: Stimulus & Response

Stimulus for Rooting reflex? stroke corner of mouth, lower and upper lip
Stimulus for plantar grasp reflex? apply pressure with thumb on ball of infant's foot
Stimulus for moro reflex? rapidly drop infants head backwards
Stimulus for Galant? hold infant in prone suspension, gently scratch or tap alongside spine with finger from shoulder to butt
Stimulus for asymetric tonic neck? Fully rotate infants head and hold for 5 sec
Stimulus for plantar grasp? place examiners finger in infants palm
Stimulus for crossed extension? supine, one leg flexed other ext, then flex extended leg
Stimulus for flexor withdrawl? supine position, one leg extended stimulate sole of foot
Stimulus automatic walking? in the standing position, hold the infant under the arms and incline forward
Stimulus for positive supporting? hold under arms in vertical position, balance on soles of feet, then maintain standing position
Stimulus for negative supporting? hold under arms in vertical position, balance on soles of feet, then hold in space
Stimulus for tonic labyrinth? Supine: place child in prone position, Prone: place child in supine position
Stimulus for placing? vertical position, brush dorsum of hand & foot against edge of table
Stimulus for Landua? supporting the thorax, hold the child in prone position in space
Stimulus for neck righting on body? place infant in supine and fully turn head to one side
Stimulus for body righting on body? place infant in supine, flex one hip and knee toward the chest and hold briefly
Stimulus for symmetrical tonic neck? place infant in crawling postion and extend head
Stimulus for protective extension down? with both hands hold the infant around the trunk. Lift in space. Turn upside down then move quickly towards the floor
Stimulus for protective extension forward? in the sitting position the child is pushed forwards toward a supporting surface
Stimulus for protective extension side? child is placed in sitting position and is pushed sideways on one shoulder with sufficient force to make him lose his balance.
Stimulus for protective extension backward? child is placed in sitting position and pushed backwards
Response for rooting? mvmt of tongue, mouth and or head to stimulus
Response for plantar grasp? toe flexion
Response for moro? 1st phase: arm ext and abd, hand opening, 2nd phase: arm flexion and add
Response for galant? lateral trunk flexion & wrinkling of skin on stimulated side
Response for ATNR? ext of extremities on face side; flexion of extremities on skull side
Response for palmar grasp? finger flexion; relflexive grasp
Response for Crossed extension? ext of the flexed, opposite leg
Response for flexor withdrawl? flexion of leg(knee & hip), dorsiflexion of foot, ext of toes
Response for automatic walking? automatic walking steps, which at this stage are rythmical and with heel strike
Response for positive supporting? increase of extensor tone in legs
Response for negative supporting? increase of flexor tone in legs
Response for tonic labyrinth? Supine: flexor tone dominates, Prone: extensor tone dominates
Response for placing? flexion & placement of extremity on table
Response for landau? extension head, trunk, and legs
Response for neck righting on body? log rolling of the entire body to maintain aligment with the head
Response for body righting on body? segmental rolling of the upper trunk to maintain aligment
Response for symetrical tonic neck? flexion of hips and knees
Response for protective extension down? extension of arms
Response for protective extension forward? arms project forward with extension of the elbows, wrists, and fingers.
Response for protective extension side? Positive reaction is abduction of the opposite arm with extension of the elbow, wrist, and fingers
Response for protective extension back? full reaction is backward extension of both arms. Frequently an element of trunk rotation occurs, then the reaction is seen in only one arm.
Created by: txst spr 2009