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