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Primitive Reflexes & Normal Age of Response

Asymmetric Tonic Neck Reflex (ATNR) Birth to 6 Months
ATNR Turn baby's head to one side and the UE & LE on the face side will Extend while the scalp side UE/LE will flex (fencer position)
Symmetrical Tonic Neck Reflex (STNR) 6 to 8 Months
STNR When head is in Flexion, the UE's will Flex & LE's will Extend; When head is in Extension, the UE's will Extend & LE's will Flex
Tonic Labyrinthine Reflex (TLR) Birth to 6 Months
TLR In Supine, the body & Extremities are in Extension; In Prone they are in Flexion
Galant Reflex 30 weeks of gestation to 2 months
Galant Reflex Stroke along lateral spine, & Trunk will Sidebend toward side of stimulus.
Palmar Grasp Reflex Birth to 4 Months
Palmar Grasp Reflex Pressure in palm will cause Flexion of fingers & strong grip
Plantar Grasp Reflex 28 weeks gestation to 3 months
Plantar Grasp Reflex Pressure to base of toes will cause toe flexion
Rooting Reflex 28 weeks of gestation to 3 months
Rooting Reflex Touching side of cheek will cause head to turn toward the same side as stimulus with mouth open
Moro Reflex 28 weeks of gestation to 5 months
Moro Dropping head into slight Ext suddenly will cuase arms to abduct, then cross into Adduction; may cause baby to cry
Startle 28 weeks of gestation to 5 months
Startle Reflex A loud or sudden noise will cause sudden jerking of entire body or Ext & Abd of UE followed by Add of shoulders
Positive Support Reflex 35 weeks of gestation to 2 months
Positive Support Reflex Placing weighth on balls of feet when upright will cause stiffening of leg & trunk into Ext
Walking/Stepping Reflex 38 weeks of gestation to 2 months
Walking/Stepping Reflex Supported upright position with soles of feet on firm surfacce will cause reciprocal flex/ext of legs as if walking
Babinski Reflex Birth to 1 year
Babinski Stroking along lateral aspect of sole of foot will cause extension of the big toe & fanning of other toes
Flexor Withdrawal Birth to 2 months (some sources say its present throughout life)
Flexor Withdrawal sharp, quick pressure to sole of foot or palm of hand will cause withdrawal from stimulus
Crossed extension Birth to 2 Months
Crossed Extension sharp, quick pressure to sole of foot will cause withdrawal of stimulated LE & Ext of opposite LE
Neck Righting on Body (NOB) Birth to 6 months
NOB Turn head while in supine, & body logrolls toward same side
Sucking Reflex Birth to 6 months
Sucking Reflex Touch lips, tongue or palate & will result in sucking
Head Lag Until 4-5 Months
Head Lag Pull infant to sit from supine & UE's will flex & there will be head lag
Parachute (Protective Ext) Downward begins at 4 Months; Sideward sitting at 6 Months; forward sitting 7 Months; backward sitting 9 months; persist throughout life
Parachute quick displacement of trunk in downward position while held or while sitting forward, sideward, or backward will result in extension of legs downward & ext of arms in sitting position to reach out to catch self
Created by: tnwebb9



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