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Electrically evoked hair-bundle movement. The application of sinusoidal (left) or pulsatile (right) current stimuli (gray) across the sensory epithelium evoked hair-bundle movements. (a) Treatment with amiloride reversibly diminished both responses, leaving only small transients at transitions in the pulse stimulus. (b) In another preparation, substitution of NMDG-based endolymph affected neither the amplitude nor the shape of the responses to electrical stimuli.
