Figure 2.

Population tuning properties. A, Best ITDs of neurons in the dataset. Subsets of neurons recorded simultaneously are plotted as one row. Left and right pointing triangles show recordings from the left and right hemisphere, respectively. Gray scales indicate on which electrode in the array neurons were found, with the electrode 1 (white) located most anterior and the electrode 7 (black) located most posterior. Neurons recorded from the same electrode are plotted individually, with the same color. Inset a, Histogram of best ITD ranges for each subset of neurons. Inset b, Histogram of the number of neurons for each subset. B, Stimulus frequency range eliciting responses of all neurons as function of their absolute best ITD. Connected white and black circles indicate the top and bottom frequency bounds for which the unit responded at 50% of its maximum response, respectively. Solid line represents linear regression (linear fit properties shown on top right). C, Maximum firing rates of all neurons as a function of their absolute best ITD, computed as the maximal firing rates of each unit in ITD tuning curves (−240 to 240 µs, 20 µs steps), averaged over 10–20 repetitions. Solid line represents linear regression (linear fit properties shown on top right).