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. Author manuscript; available in PMC: 2010 Mar 9.
Published in final edited form as: J Neurosci. 2009 Sep 9;29(36):11192–11202. doi: 10.1523/JNEUROSCI.1286-09.2009

Figure 5.

Figure 5

Response enhancement by two-pip stimuli in nonlinear A1 neurons. (A) Nonlinear neurons were not responsive to tones (median = 0 spikes/s, gray histogram). However, using two-pip stimuli, we could drive these neurons to a median of 24 spikes/s (black histogram), comparable to the median pure tone response (at BF) of tone-responsive neurons in the awake marmoset. (B) When we quantified degree of nonlinearity (see Methods), we observed a median 250% facilitation over the sum of linear components. (C) Histograms of precision in frequency and time of the second-order subunits (half-maximal extent). Median spectral and temporal precision were 0.125 oct. and 12.5 ms respectively.