physiology of the sensory system. two-point discrimination number receptors / area (receptive field...
TRANSCRIPT
![Page 1: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/1.jpg)
Physiology of the sensory system
![Page 2: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/2.jpg)
Two-point discrimination
Number receptors / area
(receptive field of the receptor )
![Page 3: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/3.jpg)
Smaller the receptive fields, greater the density of receptors.This relationship allows for greater discrimination in sensory inputs.
Text Fig. 17-3
![Page 4: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/4.jpg)
Two-point discrimination
Number receptors / area
Pathway arrangement
![Page 5: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/5.jpg)
![Page 6: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/6.jpg)
Text Fig. 9-6, Anatomical Orientation
The Spinal Nerve
![Page 7: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/7.jpg)
Sensations modalities
• 2-point discrimination• Vibration• Prorioception
• Crud touch (itch & rub)• Temperature• Pain
Posterior Column-Medial lemniscus Pathway(PCML)
Fast Slow
![Page 8: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/8.jpg)
Sensations modalities
• 2-point discrimination• Vibration• Prorioception
• Temperature• Crud touch (itch & rub)• Pain
Antero-lateral system (ALS)Other name: Spinothalamic pathway
Fast Slow
![Page 9: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/9.jpg)
Sensations modalities
• 2-point discrimination• Vibration• Prorioception
• Temperature• Crud touch (itch & rub)• Pain
Posterior Column-Medial lemniscus Pathway(PCML)
Fast Slow
Antero-lateral system (ALS)Other name: Spinothalamic pathway
Pressure ??????
![Page 10: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/10.jpg)
Posterior Column-Medial lemniscus Pathway(PCML)
![Page 11: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/11.jpg)
![Page 12: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/12.jpg)
![Page 13: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/13.jpg)
![Page 14: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/14.jpg)
Ascending and Descending Tracts of the Spinal Cord
Cervical
Thoracic
Lumbar Extremity (LE)
Extremity (UE)
![Page 15: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/15.jpg)
PCML Pathway
![Page 16: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/16.jpg)
PCML Pathway
![Page 17: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/17.jpg)
PCML Pathway
![Page 18: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/18.jpg)
Lumbar Levels
![Page 19: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/19.jpg)
Thoracic Levels
![Page 20: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/20.jpg)
Cervical Levels
![Page 21: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/21.jpg)
MRI of PCML
![Page 22: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/22.jpg)
MRI of PCML
![Page 23: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/23.jpg)
Somatotopic organization of (PCML)
![Page 24: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/24.jpg)
![Page 25: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/25.jpg)
![Page 26: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/26.jpg)
PCML Function
• 2-point discrimination• Vibration• Prorioception
![Page 27: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/27.jpg)
PCML Function
• 2-point discrimination• Vibration• Prorioception
STEREOGNOSIS
![Page 28: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/28.jpg)
PCML Function
• 2-point discrimination• Vibration• Prorioception
STEREOGNOSIS
GRAPHESTHESIA
![Page 29: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/29.jpg)
PCML Function
• 2-point discrimination• Vibration• Prorioception
STEREOGNOSIS
GRAPHESTHESIA
Help in movement and Wight
recognition
![Page 30: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/30.jpg)
PCML lesion associated symptoms
• Loss of 2-point discrimination sensation• loss of Vibration sensation• Loss Prorioception sensation
![Page 31: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/31.jpg)
PCML lesion associated symptoms
• Loss of 2-point discrimination sensation• loss of Vibration sensation• Loss Prorioception sensation
ASTEREOGNOSIS / STEREOGNOSIA
![Page 32: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/32.jpg)
PCML lesion associated symptoms
• Loss of 2-point discrimination sensation• loss of Vibration sensation• Loss Prorioception sensation
ASTEREOGNOSIS / STEREOGNOSIA
AGRAPHESTHESIA
ABAROGNOSIS
SENSORY ATAXIA
![Page 33: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/33.jpg)
PCML lesion associated symptoms
• Loss of 2-point discrimination sensation• loss of Vibration sensation• Loss Prorioception sensation
ASTEREOGNOSIS / STEREOGNOSIA
AGRAPHESTHESIA
ABAROGNOSIS
SENSORY ATAXIA
![Page 34: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/34.jpg)
PCML lesion associated symptoms
• Loss of 2-point discrimination sensation• loss of Vibration sensation• Loss Prorioception sensation
ASTEREOGNOSIS / STEREOGNOSIA
AGRAPHESTHESIA
ABAROGNOSIS
SENSORY ATAXIA
![Page 35: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/35.jpg)
Case Study
![Page 36: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/36.jpg)
Case Study
![Page 37: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/37.jpg)
Antero-lateral system (ALS)
![Page 38: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/38.jpg)
Sensations modalities
• 2-point discrimination• Vibration• Prorioception
• Temperature• Crud touch (itch & rub)• Pain
Antero-lateral system (ALS)Other name: Spinothalamic pathway
Fast Slow
![Page 39: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/39.jpg)
![Page 40: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/40.jpg)
![Page 41: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/41.jpg)
Text Fig. 18-9
![Page 42: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/42.jpg)
Syringomyelia and the ALS
Spinal cordHemisection and the ALS
![Page 43: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/43.jpg)
The ALS in the Spinal Cord, Medulla and Pons
Atlas Fig. 8-7A
![Page 44: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/44.jpg)
Text Fig. 18-11
![Page 45: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/45.jpg)
The ALS in the Midbrain, Thalamus and Cerebral Hemisphere
Atlas Fig. 8-7A
![Page 46: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/46.jpg)
Dermatomes
![Page 47: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/47.jpg)
Dermatomes
![Page 48: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/48.jpg)
![Page 49: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/49.jpg)
Dermatomes
![Page 50: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/50.jpg)
Dermatomes
![Page 51: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/51.jpg)
Dermatomes
![Page 52: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/52.jpg)
Dermatomes
• Shoulder (C5-C6)• Hand (C6-C8): 6= thumb the, 7= index finger, 8= small
finger • Nipple (T4), • Umbilicus (T10), • Inguinal region (T12-L1), • Along the pelvic rim L1 • knee (L3, L4), • The big toe (L4-L5) • The genitalia and anus (S4 and S5)
![Page 53: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/53.jpg)
Visceral sensory & referred pain
![Page 54: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/54.jpg)
Visceral sensory & referred pain
![Page 55: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/55.jpg)
Visceral sensory & referred pain
![Page 56: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/56.jpg)
Visceral sensory & referred pain
![Page 57: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/57.jpg)
Referred painLeftright
liver
![Page 58: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/58.jpg)
Visceral sensory & referred pain
![Page 59: Physiology of the sensory system. Two-point discrimination Number receptors / area (receptive field of the receptor )](https://reader037.vdocuments.net/reader037/viewer/2022110210/56649e5c5503460f94b54d03/html5/thumbnails/59.jpg)
Visceral sensory & referred pain