Group I mGluR-mediated Ca2+ responses in deaf waltzer mice. A: examples of DHPG-elicited Ca2+ responses in wild-type and waltzer mice. B: cumulative distribution plots of peak (i) and duration (ii) of DHPG-elicited responses of LSO neurons from wild-type (wt, black lines, P11–P16: n = 68 cells, P17–P20: n = 72 cells) and waltzer mice (wz, gray lines, P11–P16: n = 107 cells, P17–P20: n = 58 cells). P values for Kolmogorov–Smirnov (KS) test.