Table 1.

Differences between inner and outer hair cells.

Factor	Inner hair cells	Outer hair cells	Ref.
Arrangement	Arranged in a single row	Arranged in three parallel rows	[31,32,33]
Shape	Round and small	Long and slim	[10]
Function	Transduce mechanical energy to neural signals	Appear to impact and regulate the sensitivity of the cochlea over a range of 32 dB	[10]
Effects	Sensory Neural Hearing loss	Alter properties of cochlear input to the brain	[34]
Approximate number	3,000 to 3,500	9,000 to 12,000	[32,33]