Low (A) and high (B) magnification view at lower basal turn of the cochlea (LB), (large arrow).
Low (C) and high (D) magnification view at upper basal turn of the cochlea (UB), (large arrow).
Asterisk indicates the electrode track; Lines indicate the thickness of fibrous tissue at each point: S, superior; M, medial; I, inferior; SV, scala vestibuli; ST, scala tympani; }, new bone formation; small arrow, osseous spiral lamina; arrowheads, organ of Corti ; IAC, internal acoustic canal