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. Author manuscript; available in PMC: 2008 Jun 1.
Published in final edited form as: J Assoc Res Otolaryngol. 2007 Feb 21;8(2):220–233. doi: 10.1007/s10162-007-0076-9

Figure 3.

Figure 3

Schematic drawing of a reconstruction of the OC and SG in one of the cochlear surface preparations, illustrating the two basal turn diameter measurements. The maximum diameter of the basal coil was measured from the approximate center of the round window (D) and a second diameter (d) was measured orthogonal to the first. For making angular measurements of insertion depths and frequency range, a grid was superimposed on the reconstructed cochlea with a reference point 0º at 1 mm from the basal end of OC. In this example the OC extends slightly beyond 990º, while SG terminates at approximately 720º from the round window.