Figure 2.

Tonotopic relationships for OHCs from adult male guinea pigs. (a) The area of the basolateral region is determined from the intercept with the abscissa of the logarithmic relationship between Q_T and A_M. (b) The linear capacitance of the nonlateral wall region of the OHC is determined from the intercept with the abscissa of the relationship between Q_T and C_L. (Open circles) Measurements. (Lines) Fits of data to logarithmic functions. Refer to Table 1, functions 3 and 4 for details of the fit. Other symbols represent values for other mammalian species: mice (up-triangle) (12); rat (down-triangle) (15); mice (diamond) (11); and gerbil (right-triangle) (13). (c) The histogram of the specific capacitance on a cell-by-cell basis. (Solid line) Gaussian fit to the data upon removing the two highest values. (d) The specific capacitance of the lateral wall as determined from the slope of C_L versus A_M (refer to Eq. 11a). (Solid line) Linear fit to the data (see Table 1, function 1).