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Figure 4.

Figure 4.

Evoked release of acetylcholine (ACh) from medial olivocochlear (MOC) efferent neuron terminals produces biphasic change in membrane current and voltage of an outer hair cell. Arrows point to inward current (upper record) or initial depolarization (lower record). Dotted line indicates resting current or membrane potential. (From Ballestero et al. 2011; adapted, with permission, from Journal of Neuroscience © 2011.)