Organ of Corti
Inner hair cells: single
row, ~3500 cells,
stereocilia free in fluid.
Outer hair cells: 3 (to 4)
rows, totalling ~ 12000,
stereocilia embedded in
gelatinous overlying
tectorial membrane
From basilar membrane
vibration, adjacent hair
cells differ ~0.2% in
CHARACTERISTIC
FREQUENCY (freq at
which most sensitive).
(Piano strings: 6% apart)
PNS Fig 30-
4