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Primitive reflexes
(Infant reflexes)
BY SHALU
THARIWAL
Define
 Involuntary stereotyped movement
responses to a particular stimuli.
 Infant stimuli doesn’t last beyond 1
year.
 May not completely disappear
by maturing the CNS integrated into new movement
Shalu Thariwal
Cont…………
 Age specific
 Diagnostic tools
 Tested carefully
 Valuable for motor delay
 Determine level of neurological
maturation.
Shalu Thariwal
Classification
Reflex
maturation
Automatic
reaction
Midbrain
level
Brainstem
level
Spinal
level
Shalu Thariwal
Reflex maturation
Palmer grasp Planter grasp
 S: palm stimulate
 R: finger close, fist
 Duration: 5 month of
gestation to 4 month
postpartum
 S: touch ball of foot
 R: toes grasp, flexion of
toes
 Duration : birth to 1 yr
Shalu Thariwal
Cont….
Babinski’s sign
 S: stroke on lateral side of foot
 R: extension of great toe, fanning
 Duration : birth to 4 month
 Concern: test of pyramidal tract
Shalu Thariwal
Landaus reaction
Shalu Thariwal
Name
(automatic)
Stimulus Response Duration
Moro’s reflex Lower the head of
the baby
Arm, leg extend
and abduct then
adduct
Prenatal to 4
month
Startle Loud noise Arm, leg extend
and then add
2 month to 1 yr
Sucking reflex Touch lips Sucking Upto 3 months
Search reflex Touch cheek Head moves
toward stimuli
Upto 3 month
Palmer mental Scratch palm Jaw opens and
closes
Birth to 3 month
Palmer
mandibular
Pressure to palm Mouth open, neck
flex
3 months
Landans reaction Horizontal position Head, leg and
spine extends
3 to 12 month
Parachute Hold with pelvis Abduction of limbs 4 month to 1 yr
Gallants reaction Stimulate Move in same 2- 6 monthShalu Thariwal
Shalu Thariwal
Brainstem level
reflexes
Stimulus Response Duration
Asymmetric
tonic neck reflex
Supine, turn
head to 1 side
Limb flex on
occiput side and
extend on facial
side
Birth to 3 month
Symmetric tonic
neck reflex
a)Sitting , flex
the head
Neck and arm
flex, leg extend
Birth to 3 month
b)Sitting and
head extend
Neck and arm
ext, leg flex
-
Tonic
labyrinthine
Supine and
prone position
In supine-
extensor tone
increased, in
prone flexor
tone increased.
Birth to 6 month
- supporting
reaction
Hold axilla and
up on the couch
Flexion attitude Birth to 4 month
+ Supporting
reaction
Hold axilla and
above the floor
then on the
couch
Extension
attitude
Shalu Thariwal
ATNR
Shalu Thariwal
Reflexes….
Midbrain level
reflexes
Stimulus Response Duration
Postural
reflex(head and
body righting)
Supine, turn body in
either direction
Head right itself
with the body
1-6 month
Supine, turn head in
either direction
Body right itself
with the head
-
Labyrinthine Body held upright, tilt
in 1 direction
Tilting of head in
opposite direction
2 month to 1 yr
Spinal level
reflexes
Flexor withdrawal Extensor withdrawal Crossed extensor
Stepping and
walking
crawling Swimming
Shalu Thariwal
Spinal level reflexes
Shalu Thariwal
Delayed milestones
Shalu Thariwal
Shalu Thariwal

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Primitive reflexes

  • 2. Define  Involuntary stereotyped movement responses to a particular stimuli.  Infant stimuli doesn’t last beyond 1 year.  May not completely disappear by maturing the CNS integrated into new movement Shalu Thariwal
  • 3. Cont…………  Age specific  Diagnostic tools  Tested carefully  Valuable for motor delay  Determine level of neurological maturation. Shalu Thariwal
  • 5. Reflex maturation Palmer grasp Planter grasp  S: palm stimulate  R: finger close, fist  Duration: 5 month of gestation to 4 month postpartum  S: touch ball of foot  R: toes grasp, flexion of toes  Duration : birth to 1 yr Shalu Thariwal
  • 6. Cont…. Babinski’s sign  S: stroke on lateral side of foot  R: extension of great toe, fanning  Duration : birth to 4 month  Concern: test of pyramidal tract Shalu Thariwal
  • 8. Name (automatic) Stimulus Response Duration Moro’s reflex Lower the head of the baby Arm, leg extend and abduct then adduct Prenatal to 4 month Startle Loud noise Arm, leg extend and then add 2 month to 1 yr Sucking reflex Touch lips Sucking Upto 3 months Search reflex Touch cheek Head moves toward stimuli Upto 3 month Palmer mental Scratch palm Jaw opens and closes Birth to 3 month Palmer mandibular Pressure to palm Mouth open, neck flex 3 months Landans reaction Horizontal position Head, leg and spine extends 3 to 12 month Parachute Hold with pelvis Abduction of limbs 4 month to 1 yr Gallants reaction Stimulate Move in same 2- 6 monthShalu Thariwal
  • 10. Brainstem level reflexes Stimulus Response Duration Asymmetric tonic neck reflex Supine, turn head to 1 side Limb flex on occiput side and extend on facial side Birth to 3 month Symmetric tonic neck reflex a)Sitting , flex the head Neck and arm flex, leg extend Birth to 3 month b)Sitting and head extend Neck and arm ext, leg flex - Tonic labyrinthine Supine and prone position In supine- extensor tone increased, in prone flexor tone increased. Birth to 6 month - supporting reaction Hold axilla and up on the couch Flexion attitude Birth to 4 month + Supporting reaction Hold axilla and above the floor then on the couch Extension attitude Shalu Thariwal
  • 12. Reflexes…. Midbrain level reflexes Stimulus Response Duration Postural reflex(head and body righting) Supine, turn body in either direction Head right itself with the body 1-6 month Supine, turn head in either direction Body right itself with the head - Labyrinthine Body held upright, tilt in 1 direction Tilting of head in opposite direction 2 month to 1 yr Spinal level reflexes Flexor withdrawal Extensor withdrawal Crossed extensor Stepping and walking crawling Swimming Shalu Thariwal