Basilar Membrane: tonotopy, octaves
• Thick & taut near base
• Thin & floppy at apex
• Couples with vibrating
fluid to give local peak
response.
• Tonotopic PLACE
map (...homunculus)
• LOGARITHMIC: 20
Hz -> 200 Hz -> 2kH
-> 20 kHz, each 1/3
of the membrane
• Two-tone
discrimination
• Timing