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. Author manuscript; available in PMC: 2009 Jun 1.
Published in final edited form as: Hear Res. 2008 Feb 19;240(1-2):22–41. doi: 10.1016/j.heares.2008.02.004

Figure 5.

Figure 5

A greater proportion of units in AAF and A1 have defined characteristic frequencies (CFs) than in PAF. A single CF defined the FRAs of most units, although multi-peaked FRAs were not uncommon, particularly in AAF. An example of a multi-peaked AAF unit can be seen in the middle panels of Figure 1. Top: the proportion of units with undefined CFs is indicated by the bars at Number of Peaks = 0. The other bars indicate the proportions of units having from 1 to 4 CFs. Bottom: distributions of primary CF (i.e., the CF with the lowest threshold), smoothed with a 0.5-octave-wide rectangular window. The slightly higher median CF in A1 is caused by an almost complete absence of A1 units with CFs below 2 kHz.