Fig. 4.

Plots showing the residual conditioned response against the residual Fos count. The visual responses (visual conditioned response and the mean Fos count in the visual portion of the thalamic reticular nucleus) were predicted from the auditory responses and vice versa. The observed responses were then subtracted from predicted responses, to obtain the residual. Thus, variability in the residuals of the visual (or auditory) responses is independent of variability in the auditory (or visual) responses.