Reflexes and Reactions

stroke corner of mouth

rooting stimulus

head turns to stimulated side and mouth opens

rooting response

oral motor coordination problems in feeding and speech

rooting consequences of persisted reflex

finger placed in mouth

sucking stimulus

rhythmical suck

sucking response

oral motor coordination problems in feeding and speech

sucking consequences of persisted reflex

head dropped into extension from supine

moro reflex stimulus

abduction/extension of arms with finger spread then adduction/flexion of arms

moro reflex response 2 phases

interferes with movement and ability to maintain focused attention

moro reflex consequences of persisted reflex

sound or light

startle reaction stimulus

abduction/extension of arms with finger spread then adduction/flexion of arms

startle reaction response 2 phases

startle reaction

habituates, similar to moro reflex

place finger in infants palm

palmar grasp stimulus

fingers flex around object in palm

palmar grasp response

interferes with normal hand function

palmar grasp consequences of persisted reflex

place finger behind infants toes

plantar grasp stimulus

flexion of toes

plantar grasp response

abnormal equilibrium reactions

plantar grasp consequences of persisted reflex

rotation of head to one side

asymmetrical tonic neck reflex (ATNR) stimulus

UE and LE extend on face side and flex on skull side

asymmetrical tonic neck reflex (ATNR) response

problems with rolling, hands to mouth, maintaining midline head position, creeping, crawling

asymmetrical tonic neck reflex (ATNR) consequences of persisted reflex

place in prone or supine

tonic labyrinthine reflex (TLR) stimulus

prone increases flexion and supine increases extension

tonic labyrinthine reflex (TLR) response

compromises ability to move against gravity

tonic labyrinthine reflex (TLR) consequences of persisted reflex

lower onto flat surface until soles of feet bear some weight

positive support reaction stimulus

hip and knee extension, ankle PF

positive support reaction response

supported above surface and tilted forward

automatic stepping/walking stimulus

alternating, reciprocal steps with feet

automatic stepping/walking response

prevents functional locomotion with balance and equilibrium reactions

automatic stepping/walking consequences of persisted reflex

pin prick to sole of foot

flexor withdrawal stimulus

withdrawal of stimulated leg away from stimulus

flexor withdrawal response

impede normal movement or gait

flexor withdrawal consequences of persisted reflex

pressure applied to sole of foot with knee in extension

crossed extension stimulus

flexion, adduction, extension of opposite LE to push examiner away

crossed extension response

impede normal LE movement and contribute to scissoring

crossed extension consequences of persisted reflex

neck flexion or extension in prone or quadruped

symmetrical tonic neck reflex (STNR) stimulus

neck extension yields UE extension and LE flexion, neck flexion yields UE flexion and LE extension

symmetrical tonic neck reflex (STNR) response

unable to achieve adequate four point position or creep normally

symmetrical tonic neck reflex (STNR) consequences of persisted reflex

moving stimulus on skin along paravertebral line

galant response stimulus

hip swing towards stimulus

galant response response

scoliosis, trouble with stabilizing at midline

galant response consequences of persisted reflex

held in prone suspension

landau reaction stimulus

extension

landau reaction response