Ch10 (1) - CHAPTER 10: Sensory Physiology Pages 264-270...

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CHAPTER 10: Sensory Physiology K. Wells VPHY3100: Elements of Physiology College Vet. Med.
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Wells/VPHY3100 Lecture Outline Introduction to sensory physiology The four attributes of a stimulus that are encoded by our nervous system Somatosensory perception Visual perception
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Wells/VPHY3100 Sensory Physiology Our perception of the environment (which is not a direct record of our world) Three common steps associated with any sense: A physical stimulus Sensory transduction: transformation of sensory input into nerve impulses Formulation of “perception”, or our conscious experience of that sensation Six sensory systems Somatosensory Touch Proprioception Temperature Pain Visual Auditory Vestibular Olfactory Gustatory
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Wells/VPHY3100 Sensory Physiology Four basic types of information conveyed by each sensory system: Modality of stimulus Intensity of stimulus Time course of stimulus Location of stimulus The sensory cells Some are themselves neurons Most are specialized epithelial cells that synapse on adjacent sensory neurons Four functional classes of sensory receptors Mechanoreceptors Chemoreceptors Thermoreceptors Photoreceptors Sensory receptors at the protein level: Channels (e.g. stretch receptors) GPCR’s (e.g. photoreceptors of retina)
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Wells/VPHY3100 Lecture Outline Introduction to sensory physiology The four attributes of a stimulus that are encoded by our nervous system Somatosensory perception Visual perception
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Wells/VPHY3100 Four Attributes of a Stimulus Modality Intensity Time course Location
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This note was uploaded on 01/17/2010 for the course VPHY 3100 taught by Professor W during the Spring '05 term at University of Georgia Athens.

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Ch10 (1) - CHAPTER 10: Sensory Physiology Pages 264-270...

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