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To
enhance frequency tuning:
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Mechanical
resonance of hair bundles: Like a tuning fork, hair
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bundles
near base of cochlea are short and stiff, vibrating at high
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frequencies;
hair bundles near the tip of the cochlea are long and
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floppy,
vibrating at low frequencies.
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Electrical
resonance of cell membrane potential
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Synaptic
transmission speed:
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Synaptic
density: for speed ?
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Adapting
to large displacement:
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Ca2+-driven shift in tip link insertion site, myosin
motor on actin in
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hair
bundles.
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