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. Author manuscript; available in PMC: 2020 Dec 30.
Published in final edited form as: Hear Res. 2007 Jan 17;229(1-2):106–15. doi: 10.1016/j.heares.2007.01.001

Fig. 3.

Fig. 3

Examples of neuronal sensitivity to interaural level differences (ILDs) in A1 of anesthetized ferrets: (a, b) Neurons sensitive to ILDs favoring the contralateral ear. (c, d) Neurons sensitive predominantly to average binaural level (ABL), but less so to ILD. (e, f) Neurons with non-monotonic responses in both ILD and ABL. The gray scale indicates the mean evoked spike rate (Hz) per stimulus presentation. Negative rates are sound level combinations for which the evoked spike rate was below spontaneous levels. To aid visualization, response surfaces were smoothed with a low-pass filter (2D Gaussian, σ = 0.66) and interpolated. These examples are not members of discrete classes since principal components analysis of the population of binaural response function shapes reveals a continuous distribution of response properties (g, h). From Campbell et al. (2006).