Proprioceptor Concepts

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Proprioceptor Concepts
2011-06-05 22:13:08

Proprioceptor Concepts
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  1. What is proprioceptor
    • awareness in the space provided

    • Fundamentally mediated by the cerebellum, autopilot, tries to keep us level, terior/posterior drift,

    • when eyes are open you have a perception of where you are in space, but when you close your eyes it solely comes from the cerebellum.
    • ie Eddie still see's the world level

  2. Principals of Proproceptors
    • awareness body
    • protection mechanism - all body parts have sensory
    • stablity
  3. What are the components
    • -MOTOR
    • sensor stimulator requires a response
  4. How do they work
    • loses sense of where his arm was because

    • Brandon brought himout of proprioception awareness.

    • When you start to get altered motion or end up

    • in a restricted pattern your proprioceptors
    • change and their range gets smaller.

    • When you treat them patients can be a little unsteady during tx or after as their proprioceptors change.

  5. How do we apply them clinically
    • Someone who has lesioning will move not well

    • the brain will be getting abnormal information

    • in the lesion complex you give an abnormal

    • stimulus to the brain, the body provides the wrong response,
    • most times thebody will err on the side of stability ie fibrosus and laying down of tissue

    • which can become a pathology.
    • We create a reflexive pattern in the cord, LIGAMENTS have the most amount of proprioceptors and are a huge component to the lesionprocess, they give the most information to the brain.

  6. What is the response you’re looking for?
    • Trying to change the proprioception of the individual.

    • Youtemporarily destabilize someone you treat, they then have to readjust when theyleave your office.


  7. Types of Proprioceptors
    • Muscle spindle
    • Golgi Tendon Organ
  8. Muscle Spindle - (INTRAFUSAL)

    • deep within the belly of

    • the muscle,
    • run parallel with the fibers,

    • large percentage of them in postural

    • muscles 50x as many.
    • Postural muscles send a ton of information (deep back muscles, rotators, intertransversarii, interspinalis)

    • AFFERENT-To the core,

    • EFFERENT-From

    • the core.
    • Cause the muscle to contract-rapidly move it to quick-

    • causes the muscle to shorten and quickly contract to physically activate a muscle spindle.

  9. Muscle spindle monitors
    • length of muscle fibers
    • and Rate of change
  10. muscle spindles are found:
    • deep within the belly of a muscle
    • running paralle with fibers
    • posteral muscles for stablization: Interspinalus, intertranseral solus and rotators
  11. Sensory and motor innervation of muscle spindle

    • Nuclear Bag Fibers-primary AFFERENT only (fast stretch-dynamic)
    • Chain Fibers-Primary and Secondary afferents (slow stretch-static-and fast) Hint-Chains slow things down and hold things.
  12. Brain stem very important-area of reflexes - why
    • have nuclei there we do a lot with-

    • Keeps a record of all the muscle spindle lengths in the

    • body, same area takes care of cardiovascular activity, respiratory stuff
    • ie use

    • of Deep breathing-push hands together changes muscle spindles causing up in
    • cardiovascular activity, when you cough you shorten respiratory stuff pull ribs
    • out etc.
  13. Golgi Tendon Organ
    • it’s located within the tendon
    • runs in series with the tendon
    • -sense the tension in the entire muscle. (EXTRAFUSAL)
    • Sensory information only no motor
    • response
    • responsible for tension and its rate of change
    • Dynamic response-raising leg too fast in supine
    • Static response- standing in position for long period of time causes muscles to contract but these are susceptible to fatigue-gives communication to muscle spindle to keep you erect and not falling over.
    • Involuntary muscular relaxation- keeps
    • muscle from tearing when muscle getting moved to fast.
  14. Golgi Tendon Organ
    2 types of fibers
    • Necubus- only fast stretch
    • Chain fibers: fasat and slow stretch