Primitive Infant Reflexes
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| Tonic Labyrinthine Reflex (TLR) Stimulus | Position of inner ear (labyrinth), as is reflected by head position
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| Tonic Labyrinthine Reflex (TLR) Response | In the supine position, body and extremities are held in extension; in the prone position, body and extremities are held in flexion
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| Tonic Labyrinthine Reflex (TLR) Normal age of response | Birth - 6 months
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| Symmetrical Tonic Neck Reflex (STNR) Stimulus | Head position (flexion or extension)
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| Symmetrical Tonic Neck Reflex (STNR) Response | When head is in flexion, arms are flexed, legs extended; when head is in extension, arms are extended, legs flexed
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| Symmetrical Tonic Neck Reflex (STNR) Normal age of response | 6 – 8 months
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| Galant Reflex Stimulus | Touch to the skin along spine from shoulder to hip
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| Galant Reflex Response | Lateral flexion of trunk to side of stimulus
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| Galant Reflex Normal age of response | 30 weeks of gestation - 2 months
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| Palmar Grasp Reflex Stimulus | pressure in palm on ulnar side of hand
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| Palmar Grasp Reflex Response | Flexion of fingers causing strong grip
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| Palmar Grasp Reflex Normal age of response | Birth - 4 months
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| Plantar Grasp Reflex Stimulus | Pressure to base of toes
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| Plantar Grasp Reflex Response | Toe Flexion
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| Plantar Grasp Reflex Normal age of response | 28 weeks gestation - 9 months
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| Rooting Reflex Stimulus | Touch on cheek
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| Rooting Reflex Response | Turning head to same side with mouth open
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| Rooting Reflex Normal age of response | 28 weeks gestation - 3 months
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| Moro Reflex Stimulus | Head dropping into extension suddenly for a few inches
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| Moro Reflex Response | Arms abduct with fingers open, then cross trunk into adduction; cry
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| Moro Reflex Normal age of response | 28 weeks gestation - 5 months
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| Startle Reflex Stimulus | Loud, sudden noise
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| Startle Reflex Response | Similar to Moro response, but elbows remain flexed and hands closed
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| Startle Reflex Normal age of response | 28 weeks gestation - 5 months
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| Positive Support Reflex Stimulus | Weight placed on balls of feet when upright
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| Positive Support Reflex Response | Stiffening of legs and trunk into extension
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| Positive Support Reflex Normal age of response | 35 weeks gestation - 2 months
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| Walking (Stepping) Reflex Stimulus | Supported upright position with soles of feet on firm surface
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| Walking (Stepping) Reflex Response | Reciprocal flexion/extension of legs
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| Walking (Stepping) Reflex Normal age of response | 38 weeks gestation - 2 months
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Created by:
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