57 5 Anatomy and Physiology of Sensory Systems Introduction The Somatosensory System Sensory Receptors Ascending Somatosensory Pathways Electrical Potentials Generated by the Somatosensory Nervous System Neural Generators of the SSEP The Auditory System The Ear The Cochlea Auditory Nervous System Descending Auditory Nervous System Electrical Potentials from the Auditory Nervous System The Visual System The Eye Ascending Visual Pathways Visual Evoked Potentials INTRODUCTION
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5Anatomy and Physiology of Sensory Systems
IntroductionThe Somatosensory SystemSensory ReceptorsAscending Somatosensory PathwaysElectrical Potentials Generated by the Somatosensory Nervous SystemNeural Generators of the SSEPThe Auditory SystemThe EarThe CochleaAuditory Nervous SystemDescending Auditory Nervous SystemElectrical Potentials from the Auditory Nervous SystemThe Visual SystemThe EyeAscending Visual PathwaysVisual Evoked Potentials
INTRODUCTION
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THE SOMATOSENSORY SYSTEM
Sensory Receptors
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Ascending Somatosensory Pathways
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Dorsal Root Fiber Collaterals.
Dorsal Column System.
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Organization of the Somatosensory Cortex.
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Anterior Lateral System.
Anterior and Posterior Spinocerebellar System.
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The Trigeminal System.
Electrical Potentials Generated by the Somatosensory Nervous System
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Near-Field Evoked Potentials.
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Far-Field Evoked Potentials.
Upper Limb SSEP.
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Lower Limb SSEP.
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Neural Generators of the SSEP
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Upper Limb SSEP.
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Lower Limb SSEP.
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THE AUDITORY SYSTEM
The Ear
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Sound Conduction to the Cochlea.
The Cochlea
Frequency Analysis in the Cochlea.
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Sensory Transduction in the Cochlea.
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Electrical Potentials Generated in the Cochlea.
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Auditory Nervous System
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AnatomyCLASSICAL (LEMNISCAL) PATHWAYS.
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AUDITORY CORTEX.
Nonclassical (Extralemniscal) Pathways.
Physiology.
FREQUENCY TUNING.
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TONOTOPIC ORGANIZATION.
Descending Auditory Nervous System
Anatomy.
Physiology.
Electrical Potentials from the Auditory Nervous System
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Auditory Brainstem Responses.
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Neural Generators of the ABR.
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THE VISUAL SYSTEM
The Eye
Receptors.
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Ascending Visual Pathways
Visual Evoked Potentials
Neural Generators of the VEP.
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REFERENCES
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