Sensory Assessment

  1. Purpose of Sensory Assessment
    • Determine level of sensory feedback affecting movement
    • Provide basis for initiatin program of sensory retraining or desensitization
    • Determine need for compensatory techniques
    • Assure patient's safety and prevent secondary complications
  2. Mechanoreceptors
    Respons to mechanical deformation
  3. Thermoreceptors
    Respond to changes in temperature
  4. Chemoreceptors
    Respons to chemical substances. Two important chemoreceptors are teh receptors that correspond to smell and taste.
  5. Electromagnetic Receptors
    respond to visible light
  6. Cutaneous Sensory Receptors
    -Free Nerve Endings
    perception of pain, temperature touch, pressure, tickle, and itch sensations
  7. Cutaneous Sensory Receptors
    -Hair Follicle Endings
    perceive movement or touch
  8. Cutaneous Sensory Receptors
    -Merkel's disks
    • are found below the epidermis
    • perceive low intensity touch and velocity of touch
    • two point discrimination
    • localization of touch
  9. Cutaneous Sensory Receptors
    -Ruffini Endings
    • located in the deep dermis
    • perceive touch and pressure
  10. Cutaneous Sensory Receptors
    -Karause's end bulbs
    • located in the dermis
    • perceive touch and pressure
  11. Cutaneous Sensory Receptors
    -Meissner's Corpuscles
    • located in the dermis
    • perceive touch and the recognition of texture
  12. Cutaneous Sensory Receptors
    -Pacinian Corpuscles
    • Located in subcutaneous tissue
    • perceive deep touch and vibration
  13. Deep Sensory Receptors-Muscle Receptors
    Muscles Spindles
    • monitors chang in the length of muscle fibers also velocity of change.
    • plays vital role in position and movement sense and motor learning.
  14. Deep Sensory Receptors-Muscle Receptors
    Golgi Tendon Organs
    • Located in the proximal and distal tendon insertion of the muscle
    • Monitor muscle tension
  15. Deep Sensory Receptors-Muscle Receptors
    Free Nerve Endings
    Pain and pressure monitors
  16. Deep Sensory Receptors-Muscle Receptors
    Pacinian Corpuscles
    Deep pressure and vibration
  17. Joint Receptors
    Golgi Type Endings
    Located in ligaments, perceive rate of joint movement
  18. Joint Receptors
    Free Nerve Endings
    Located in joint capsule and ligaments, perceive and respond to pain and have a crude awareness of joint motion.
  19. Joint Receptors
    Ruffini Endings
    Located in joint capsule and ligaments, perceive and respond to direction and velocity of joint motion.
  20. Joint Receptors
    Paciniform Endings
    Located in joint capsule, monitor rapid joint movements.
  21. Anterolateral Spinothalamic System (ALST) (Ventral Spinothalamic Tract)
    • Carries nondiscriminative sensations
    • pain
    • temperature
    • tickle
    • itch
    • sexual sensations
  22. ALST location
    ALST starts in dorsal roots, crosses to opposite side, and travels to brainstem and thalamus
  23. Dorsal Column (Medial Lemniscus Tract)
    • Carries discriminative sensation to the thalamus
    • touch
    • stereognosis
    • pressure
    • barognosis
    • graphesthesia
    • texture
    • kinesthesia
    • two point discrimination
    • proprioception
    • vibration
  24. Stereognosis
    the ability to perceive the form of an object by using the sense of touch
  25. Barognosis
    the ability of evaluating the weight of objects, or to differentiate objects of different weights by looking at them
  26. Graphesthesia
    is the ability to recognize writing on the skin purely by the sensation of touch.
  27. Kinesthesia
Card Set
Sensory Assessment
Sensory Assessment