Inborn behavioral ......

1. By DR. BANEET SHARMA (p.t)

2. Contents
 Introduction
 Defination
 Why it iz necessory
 Reflexes
 Sucking reflex
 Rooting reflex
 Moro reflex
 Asymmetrical tonic neck reflex
 Symmetric tonic reflex
 Palmar grasp reflex
 Landaus reflex
 Plantar reflex
 Gallant reflex
 Stepping reflex
 Parachute reflex
 Pupillary reflex
 Acoustic reflex

3. Primitive REFLEXES

4. Also known as
 Infantile
 Infant
 Newborn reflexes

5. Introduction
1) Transition from an aquatic environment to a world of air . The first breath begins even
before the umbilical cord is cut.
2)Eat and digest his or her own food since .
3)Maintain his or her own body temperature.
4)Excrete his or her own wastes.
5)Adjust to intermittent feeding since food is now only available to certain intervals.
At birth, the neonate must immediately make five major adjustments.
A normal birth is considered fully term if the delivery occurs during the 37th to 40th week
after conception. Developmentally, the baby is considered a neonate for the first 28 days of
life.

6. Period of growth
Prenatal period
Ovum
Embryo
fetus
0 to 14 days
14 days to 9 weeks
9 weeks to birth
Perinatal period 22 weeks of gestation to 7 days after
birth
Postnatal period
New born
Infancy
Toddler
Preschool child
First 4 weeks after birth
First year
1 to 3 years
3 to 6 years
School age child 6 to 10 years {girls}
6 to 12 years{boys}

7. Defination

8. Neonatal reflexes or primitive reflexes are the inborn
behavioral patterns that develop during uterine life.
 They should be fully present at birth and are gradually
inhibited by higher centers in the brain during the first
3 to 12 months of postnatal life.

9. Reflexes which are essential for a newborn’s survival immediately after
birth
reflexes
sucking
swallowing
blinking
defecating
Urinating
Hiccupping

10.  Under normal developmental conditions, these
neonatal reflexes represent important reactions of the
nervous system and are only observable within a
specific period of time over the first few months of life.
 The following reflexes are normally present from birth
and are part of a normal newborn evaluation
 A normally developing newborn should respond to
certain stimuli with these reflexes, which eventually
become inhibited as the child matures

11. Why neonatal reflexes are
necessary to asses
 Most primitive reflexes begin to occur in utero through
the early months of the child’s postnatal life.
 •These reflexes are then replaced by voluntary motor
skills.
 •When the reflexes are not inhibited, there is usually a
neurological problem at hand.
 •In those individuals with cerebral palsy and
neurogenic dysphagia, the presence of primitive
reflexes is a characteristic

12. Classification of reflexes
Automatic
Spinal cord
Brain stem
midbrain
cortex

13. Automatic reflexes

14. Moro Reflex (Automatic reflex)
 Onset - begins at 28 weeks gestation
 Integration - 5-6 months
 Testing position - child in supine with head in midline, support the
child's head while pulling the child to a position halfway between
supine and upright sitting
 Procedure - support the infant’s head and shoulders with one hand.
Allow the neck to drop back to allow the anterior neck muscles to
stretch
 Response observed - the shoulders abduct, the elbows, wrists and
fingers extend. Subsequently, the shoulders adduct, and the elbows
and fingers flex
 Functional significance - asymmetry during this reaction may
indicate a brain lesion or injury or peripheral nerve problems to the
upper extremity

16. Landau’s Reflex (A.R)
 Onset - 3 -4 months
 Integration - 12 - 24 months
 Testing position - prone, supported in air
 Procedure - wait for a reaction after placement
 Response observed - the head will extend and the back
and hips will extend in sequence ("superman"
appearance)
 Functional significance - breaks up the total flexion
pattern seen at birth

18. Gallant Reflex (A.R)
 Onset - begins at 32 weeks gestation
 Integration - 2 months, though may persist in atypical
children
 Testing position - infant placed prone in alignment
 Procedure - gently stimulate along the paravertebral area
from the C7 area to the buttocks
 Response observed - infant will laterally flex toward the
stimulated side
 Functional significance - often seen with children with
athetoid CP

20. Parachute reflex(A.R)
 occurs in slightly older infants, when you hold the
child upright and then rotate his body quickly face
forward (as if falling).
 The baby will extend his arms forward as if to break a
fall, even though this reflex appears long before the
baby walks.

22. Spinal reflexes
 Flexor withdrawal reflex
 Extensor trust
 Cross extensor
 Palmar grasp
 Plantar reflex
 Sucking reflex
 Rooting reflex
 Primitive walking

23. Flexior withdrawal
 Position- supine head in neutral position and legs
extended
 Stimulus- sole of foot
 response- uncontrolled flexion of stimulated
extremity
 Present –since birth
 disappears- by 2 months

24. Extensor trust
 Position- supine head neutral one leg extended and
the other flexed
 Stimulus- sole of flexed leg is given stroking
 Response – immediate extension ,adduction and
internal rotation of flexed led with plantar flexion of
foot
 Present at birth and integrated by 4 months

25. Sucking Reflex
 Onset - begins at 28 weeks gestation
 Integration - 2-5 months
 Testing position - infant supine with the head in
midline
 Procedure - place a finger of nipple into the infant’s
mouth
 Response observed - rhythmical sucking
 Functional significance - persistence of this reflex may
inhibit voluntary sucking

27. Rooting reflex (Spinal ref)
 Onset - 28 weeks gestation
 Integration - 3 months
 Testing position - with the infant supine, the head in
midline and hands on chest
 Procedure - gently stroke the infant from the lips to the
cheek
 Normal response - the infant should turn his head toward
the stimulated side with the mouth opening and a trial of
sucking the finger. May not be present if the infant is not
hungry.
 Functional significance - persistence can interfere with
sucking. Absence of this is seen in neurologically impaired
infants.

29. Palmar Grasp spinal reflex
 Onset - 10 weeks gestation
 Integration - 4-6 months
 Testing position - supine, head midline, arms and
hands free
 Procedure - place a finger in infant’s hand from the
ulnar to the palmar surface
 Response observed - infant’s fingers will flex around
the finger
 Functional significance -following the development of
grasp, the infant begins to reach for objects and
utilizes a crude palmer grasp to hold them

31. Plantar Reflex spinal reflex
 Onset -18 weeks in utero
 Integration – 6 months after birth
 Stimulated by stroking the sole of the foot:
 –toes of the foot should fanning out
 –the foot itself should curl in.

33. Onset - begins at 37 weeks gestation
Integration - 2 months
Testing position supported in the vertical position
Procedure - support the infant upright with the feet touching a hard surface.
Incline the infant forward and gently move the infant forward to accompany
any stepping
Response observed - alternating, rhythmical, and coordinated steps
Functional significance - premature infants will tend to walk in a roe-heel
fashion while more mature infants will walk in a heel-toe pattern.

35. Brainstem level reflex
 Symmetrical tonic neck reflex
 Asymmetrical tonic neck reflex
 Tonic labyrinthine reflex
 Positive supporting reaction

36. Symmetrical tonic reflex
 Onset – 0,4-6 months
 Integration - 8 - 12 months
 Testing position - child in quadruped position
on the floor or either in supine position
 Procedure - passively flex the head forward and
then extend it backwards
 Response observed - forward head flexion will
produce flexion of the upper extremities and
extension of the lower extremities; extension of
the head will produce extension of the upper
extremities and flexion of the lower extremities
 Functional significance - necessary to achieve
quadruped crawling

37. Asymmetrical tonic reflex
Brain stem reflex
 Onset - 0-2 months
 Integration - 4-6 months
 Testing position - supine
 Procedure - gently turn the infant’s head to one
side
 Response observed – UL and UL of opposite side
goes into flexion and on the same side ,limbs are
extended.
 Functional significance - persistence of this reflex
may indicate CNS damage

39. Tonic labyrinthine reflex
 Position either supine or prone
 Response: in supine extensor tone is present ,in prone
flexion tone is increased
 Present from birth
 Integrated by 3 to 4 months

40. Positive supporting reaction
 Stimulus : hold child in eract position ,lift him up and
bounce up and down on plinth till sole of foot touches
the plinth
 Responce : exaggerated extension of the lower limbs
 This is present at birth and disappears within 3 to 4
months

41. Negative supporting reaction
 It can be checked by holding the child in weight
bearing position and suddenly lift him up
 The response is sudden flexion of the lower limb
 Present at birth and integrated by 4 months

42. Midbrain reflex
 Optical righting reflex
 Neck righting

43. Optical righting reflex
 Optical righting reflex
 Position – hold child from armpit in a suspended
position then change position of his head from side to
side
 response: eyes will always move to same side as head
 Appears by 1 to 2 year and remains throughout ones
life

44. Neck righting
 Position : supine blind folded ,rotate head to one side
 Response:body rotates to that side as a whole .
 Generally present at birth but a time may appear as
late as 3 months

45. Cortical level reflex
 This consists of all the equlibrium reactions
 Usually checked on tilt board or rocking board

46. Other reflex

47. ACOUSTIC REFLEX
 ALSO CALLED . STAPEDIUS REFLEX
 It is an involantary muscle contraction that occurs in
the middle ear of mammals in responce to high
intensity sound stimuli.
 Response in neonate ,in response of loud sound upper
limb goes in to extension ,abduction followed by
adduction and flexion.
 Functional significance –to locate injury to facial
nerve. as the stapedius muscle is innervated by the
facial nerve

48. Pupillary reflex
 reflex occurs with darkening the room and shining a
penlight directly into the neonate's eye for several
seconds.
 The pupils should both constrict equally; this reflex
should not disappear.

49. Reflex Stimulation Response Duration
Babinski Sole of foot stroked Fans out toes and twists foot in Disappears at nine months to a year
Blinking Flash of light or puff of air Closes eyes Permanent
Grasping Palms touched Grasps tightly Weakens at three months;
disappears at a year
Moro Sudden move; loud noise Startles; throws out arms and legs
and then pulls them toward body
Disappears at three to four months
Summary

50. Rooting Cheek stroked or side of mouth touched Turns toward source, opens mouth and
sucks
Disappears at three to four months
Stepping Infant held upright with feet
touching ground
Moves feet as if to walk Disappears at three to four months
Sucking Mouth touched by object Sucks on object Disappears at three to four months
tonic neck Placed on back Makes fists and turns head to
the right
Disappears at two months

51. Thank you   