Table 1.

Phase shift of the photometric response. The OHC was stimulated at the base by a 3 nA peak-to-peak sinusoidal current injection of various frequencies under current clamp. The phase at the intermediate 1 and intermediate 2 segments was compared to the phase at the base using the paired Student’s t-test.

	Phase shift from the base (°)
Stimulus frequency (Hz)	Intermediate 1	Intermediate 2	N
100	4.2 ± 2.8, 0.19	10.7 ± 6.0, 0.15	6
400	−6.6 ± 2.4, 0.074	−11.5 ± 3.3, 0.041	4
800	−4.3 ± 1.2, 0.025	−6.9 ± 1.5, 0.011	5

The values in the second and third columns are mean ± SE, p-value.