Review Note
Last Update: 11/04/2023 04:50 PM
Current Deck: PHYL 2041 (Exam 2)
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Front
Discuss how sound pitch, or frequency, is encoded in the activity of spiral ganglion cells. How are cochlear nuclei organized with respect to sound frequency?
Back
- Each spiral ganglion neuron innervates only one inner hair cell
- Frequency sensitivity of neuron determined by location of innervated hair cell on basilar membrane; captured by its characteristic frequency and tuning curve
- Neurons innervating base of basilar membrane are tuned towards high-frequency sounds, neurons innervating apex sensitive to low-frequency sounds
- Efferents of spiral ganglion neurons to cochlear nucleus are ordered -> Cochlear nuclei also have tonotopic organization
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