Fig. 8.

A, Distribution of peak barium current in 166 cells (from all positions). Steady-state current at the peak of the I–V curve (between −10 and 10 mV) is shown. Smooth curve is the sum of two Gaussian distributions fit to the histogram with means at 70 and 205 pA. There appeared to be two classes of cells with respect to barium current amplitude.B, Mean values of barium current in each cochlear position (+SE), with neural cell pools represented by open bars and abneural cells by filled bars. Each pool contained 29–31 cells, except those from 2.0 mm in which there were 22 neural cells and 25 abneural cells. Student’s ttest showed that neural means were significantly different from abneural means for all regions. Also, neural cells at 0.3 were significantly different from neural cells at 1.0 and 2.0 mm. Mean currents were not significantly different between neural cells at 1.0 and 2.0 mm (p = 0.33).