Figure 1.

(a) Stimulus display during simulated forward translation (motion vectors indicated by arrows) with one object moving independently within the scene (indicated by a bold arrow). (b) Zenithal view of the stimulus layout. As the observer (triangle) moves forward (3 cm s⁻¹), the target (black circle) moves either forward or backward within the scene (white circles). (c) Amplitude envelope of the auditory cues in the visual-only (top), auditory-static (middle) and auditory-moving (bottom) cases.