Spatial and temporal layout of experimental trials. A–C, Spatial configurations of EH, HS, and EH&HS variable blocks. Diamonds, Sound locations; head and gaze positions are indicated by squares and dots, respectively. D–F, Temporal events for the same blocks as in A–C. G–I, Distributions of elevation difference between actual and desired eye-in-head (EH, G), head in space (HS, H), and eye-in-space (ES, I). Bins are 2° in elevation and subjects are stacked (gray shades). Because ES = HS + EH, and ES is accurate (i.e., errors are near zero), EH and HS distributions are negatively correlated.