| Auditory
System: Hair Cells |
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| • | Force
towards kinocilium opens |
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| channels
& K+, Ca2+ enter, |
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| depolarizing
cell by 10s of mV. |
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| Force
away shuts channels. |
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| • | Tip
links (em): believed to |
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| connect
transduction channels |
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| (cation
channels on hairs) |
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| • | Cell
depolarized / hyperpolarized |
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| – | frequency:
basilar membrane |
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| – | timing:
locked to local vibration |
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| – | amplitude:
loudness |
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| • | Neurotransmitter
(Glu?) release |
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| • | Very
fast (responding from 10 Hz |
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| – 100 kHz i.e.10 msec
accuracy). |
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| PNS Fig 31-2 |