Figure 3.

Similarity of CF-threshold and SR spatial irregularities of chinchilla ANFs. A, Average spatial irregularities of low-pass filtered (corner frequency, 2 mm⁻¹) SR and CF thresholds computed from 2250 ANFs with SRs >18/s pooled across 190 chinchillas. B, Crosscorrelogram of the unfiltered spatial irregularities. The irregularities are significantly and negatively correlated at zero lag: r = −0.217; p = 0.0097; N* = 139. Flat red and black lines indicate the zero-lag 99% confidence limits computed, respectively, on the assumption that correlation coefficients are normally distributed and by bootstrap resampling (see Materials and Methods).