hearing somato&chemical senses with notes

hearing somato&chemical senses with notes -...

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Physical & Perceptual Dimensions
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Ear Anatomy
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Cross Section of Cochlea
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Organ of Corti Fluid in scala media contains K + and Ca 2+
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Transduction QuickTime™ and a TIFF (Uncompressed) decompressor are needed to see this picture. Ca+ channels Movement of hair cells open mechanically gated channels Cell depolarizes and opens Ca + channels Glutamate released, binds to receptors on auditory nerve to signal action potentials
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Brain to Cochlea Terminals secrete ACh Inhibits outer hair cells Filters background noise Brain Cochlea Olivocochlear bundle
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Auditory Pathway Auditory nerve Medulla Oblongata Tectum Thalamus temporal Lobe
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primary auditory cortex Tonotropic representation
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Place Coding
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Base Apex Low High FREQUENCY PLACE BASILAR MEMBRANE DISPLACEMENT
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Cochlear Implant
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Rate Coding Neurons near apex fire in synchrony with movement
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Timbre Different portions of basilar membrane respond to overtones
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Location: Phase Differences QuickTime™ and a TIFF (Uncompressed) decompressor are needed to see this picture.
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Sound Localization “sonic shadow” Ears receive different intensities Outer ear changes timbre
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primary auditory cortex Tonotropic representation Dorsal stream sound location Ventral stream sound analysis
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hearing somato&chemical senses with notes -...

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