Fig. 6.

Influence of eye position on localization of auditory, visual, and bimodal targets. A: trial-by-trial localization accuracy for auditory, visual, and bimodal (concurrent auditory and visual) targets in Az for 2 representative subjects. The changes in accuracy for auditory (green trace) and bi-modal (blue trace) targets are modeled as above to obtain time constant (τ) and magnitude (a). Shift magnitude for bimodal targets closely tracked perceived sound location in subject 1 but visual in subject 2. B: localization shift magnitude for auditory and bimodal targets in response to 40° Az gaze changes (pooled for R and L), calculated as end-epoch averages and model estimates. Values differ between target types (P < 0.005) but remain comparable between methods (P ≥ 0.28). End-epoch averages of visual targets are also included for comparison.