Figure 3.

Example of monkey multisensory adaptation. Two sessions from one monkey of visual–vestibular adaptation are presented. For both sessions, visual coherence = 100% (RR > 1). Plotting conventions are the same as Figures 1 and 2. Opposite visual–vestibular heading discrepancies (Δ) were used for the two examples: in A, Δ was positive. Hence, results can be compared directly with the simulation results of Figure 1 (which also used positive Δ). In B, Δ was negative. Hence, shifts are expected in the reverse direction. Unlike Figures 1 and 2, there are no combined-cue data during the adaptation trials from the monkey experiment. R² ≥ 0.9 for all psychometric fits. Vis, Visual; Vest, vestibular.