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Reflexes

Reflexes. OTH 603 Joyce Salls, OTD, OTR/L. What is a Reflex?. Involuntary response Part of normal development. Role of Reflexes. Serves as the basis for normal development CNS matures: reflexes become “integrated” into higher level “reactions”

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Reflexes

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  1. Reflexes OTH 603 Joyce Salls, OTD, OTR/L

  2. What is a Reflex? Involuntary response Part of normal development

  3. Role of Reflexes • Serves as the basis for normal development • CNS matures: reflexes become “integrated” into higher level “reactions” • “reactions”: responses to changes in center of gravity: (righting & equilibrium reactions) • Forms the basis for motor control

  4. Normal development: see flexibility in movement: reflexes are not “obligatory” • Reflexes may reappear in adults following brain injury (TBI, stroke): • Lower level reflexes no longer inhibited • Reflex may become obligatory • Abnormal tone

  5. Reflex Testing Apply sensory stimulus Observe response Postive (+) = presence of reflex Negative (-) = absence of reflex * Observation during functional activities may be primary means of evaluation with some clients

  6. What’s does “normal” mean in reflex testing? In reflex testing, neither + or - is equated with normal. Depends on client’s age Primitive reflexes (+) in adults is never normal. Presence of higher level reactions (+) is normal

  7. Which primitive reflexes may we see in adults, and more importantly, what are the functional implications?

  8. Asymmetrical Tonic Neck Reflex (ATNR) Functional Implications:

  9. Symmetrical Tonic Neck Reflex Functional Implications:

  10. Tonic Labyrinthine Reflex Functional Implications:

  11. Associated Reactions Functional Implications: http://www.youtube.com/watch?v=bDtupoBsp6o

  12. Grasp Reflex

  13. Righting Reactions Purpose: restore head and body in normal relationship in space Functional Implications:

  14. Protective Extension Purpose: prevent from getting injured when falling Functional Implications:

  15. Equilibrium Reactions Purpose: Maintain body alignment when center of gravity is displaced Functional Implications:

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