Figure 2.
Transition from fine time structure to envelope ITD sensitivity in IC neurons. A, B, Homophasic (solid line) and antiphasic (dashed line) noise delay functions for two IC neurons with CFs of 642 Hz (A) and 3427 Hz (B). C, Correlation coefficient between homophasic and antiphasic noise delay functions versus CF for our sample of IC neurons. D, E, Firing rate as a function of waveform interaural correlation measured at best delay for the same neurons as in A and B. F, Symmetry index of rate-interaural correlation functions versus CF across our sample of IC neurons. Dashed lines in C and F show the CF cutoff that best separates ITDfs-sensitive neurons from ITDenv-sensitive neurons.