Trial-to-trial variability of ITD tuning. A: correlation between the ITD tuning curve obtained with a single trial and the 10-trial ITD tuning curve for NL, LLDa, and ICcc neurons. The box extends from the lower quartile to the upper quartile of the sample. Outliers (+) are data points that lie >1.5-fold the interquartile range of the sample beyond the box. B: the ITD-averaged Fano factor for NL, LLDa, and ICcc neurons. C: the ITD-averaged spike count SD for NL, LLDa, and ICcc neurons.