Outer haircells act locally within the cochlea to modulate inner haircells

Evidence

Although the functions of the two kinds of haircells and their neural innervation are not clear in detail, it seems to be reasonable, in connection with other facts, to assume that the function of the outer haircells is restricted to the organ of Corti. The outer haircells appear to exert a large influence on the inner haircells, although there is no direct neural connection between the two systems. — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 206

Categorization

• QUESTION: How do outer haircells influence inner haircells with no direct neural connection? Presumably mechanical via basilar membrane motion — verify in Sect. 3.1.3(b).