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. Author manuscript; available in PMC: 2008 Jun 1.
Published in final edited form as: Hear Res. 2007 Mar 2;228(1-2):212–229. doi: 10.1016/j.heares.2007.02.009

Figure 1.

Figure 1

Frequency characteristics of single units in the IC. A: Characteristic frequencies (CF) of the sample of 106 neurons recorded from C57 mice between 6–12 months of age. CFs ranged from 6–32 kHz with many in the 10–20 kHz range. B: Tonotopic reorganization in the IC. CF plotted versus recording depth for neurons in the IC of C57 mice (filled circles) and normal hearing CBA/CaJ mice (open circles; replotted from Portfors and Felix II, 2005). In the C57 mice, neurons tuned to high frequencies (> 32 kHz) were absent and CFs in the ventral region of the IC were tuned to middle frequencies (10–20 kHz; filled circles). C: Minimum thresholds versus CF. Thresholds were lowest for neurons with CFs in the 10–15 kHz range.