Sensory system

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The sensory system is the part of the nervous system that detects ,transfers and processes stimuli from the environment

http://www.asktheneurologist.com/Sensory-System.html

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Sensory system

  1. 1. Sensory System Dr. Marc Gotkine Submitted 2008 to
  2. 3. How to drink a cup of coffee safely!
  3. 4. Stimulus
  4. 5. Stimulus Response
  5. 6. Stimulus Response Consciousness HOT !!!
  6. 7. Stimulus Response Consciousness HOT !!! Expensive ! -
  7. 8. Monosynaptic reflex
  8. 9. Stimulus Consciousness Detection Transmission Perception HOT !!!
  9. 10. Stimulus Consciousness Detection Transmission Perception HOT !!!
  10. 11. Stimulus Consciousness Detection Perception rainbow Transmission
  11. 12. Stimulus Consciousness Detection Transmission Perception music
  12. 13. Stimulus Consciousness Detection Transmission Perception chocolate
  13. 14. Stimulus Consciousness Detection Transmission Perception Perfume
  14. 15. Processing <ul><li>Grey Matter </li></ul><ul><ul><li>Cell bodies & Synapses = Area of processing </li></ul></ul><ul><ul><li>More processing = larger area of grey matter </li></ul></ul>Stimulus Consciousness Detection Transmission Perception
  15. 16. <ul><li>White Matter </li></ul><ul><ul><li>Myelinated Axons = Transmission pathway </li></ul></ul><ul><ul><li>No processing within white matter </li></ul></ul><ul><ul><li>Can stop at grey-matter “stations” to process information on the way </li></ul></ul>Stimulus Consciousness Detection Transmission Perception
  16. 17. Transmission
  17. 18. Processing Stimulus Consciousness Detection Transmission Perception
  18. 19. Processing עיבוד Stimulus Consciousness Detection Transmission Perception
  19. 20. Processing Stimulus Consciousness Detection Transmission Perception
  20. 21. Processing עיבוד Stimulus Consciousness Detection Transmission Perception
  21. 22. Processing Stimulus Consciousness Detection Transmission Perception
  22. 23. Processing עיבוד Stimulus Consciousness Detection Transmission Perception
  23. 27. Pacinian corpuscle Pressure Vibration
  24. 28. Meissner's corpuscle Light touch
  25. 29. <ul><li>Nociceptors (Pain receptors) </li></ul><ul><ul><li>Free nerve endings </li></ul></ul><ul><ul><li>Temperature </li></ul></ul><ul><ul><li>Mechanical stimuli </li></ul></ul><ul><ul><li>Polymodality </li></ul></ul>
  26. 33. Homonculus (point-to-point mapping)
  27. 34. Vision
  28. 41. Sphincter pupillae muscle Pathways involved in the pupillary light reflex
  29. 55. Stimulus Response Consciousness -
  30. 56. A man with abnormal hand-movements only when he looks at his hand Case
  31. 57. Pseudoathetosis http://www.asktheneurologist.com/movement-disorders-lecture.html
  32. 58. Pseudoathetosis - deciding on the basis of faulty input Due to a disturbance in the pathway which sense where the joints are in space Sensory disturbances can cause motor problems
  33. 59. <ul><li>THANKS </li></ul>

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