Figure 4.

Responses of six representative neurons to VASS. The left column displays the responses to varying virtual azimuths at the best elevation; the right column displays the responses to varying virtual elevations at the best azimuth. Each row illustrates the responses of one neuron. Responses to 10 presentations of each virtual direction are separated by lines. A, Two A1 neurons. B, Two pAES neurons. C, Two aAES neurons. All neurons had significant modulation of both their spike counts and first spike latency as a function of azimuth, except for the bottom neuron in A that did not have significant modulation of its first spike latency. The bottom example of A and the top example of C did not have significant modulation of their spike counts as a function of elevation, and neither example in C had significant modulation of their first spike latency as a function of elevation.