Fig. 2.

Translation detection. (A, B) Schematic and (C–F) example stimulus traces for signal absent and present trials. C–F: same conventions as those in Fig. 1. On signal absent trials (A), angular motion was counterclockwise around the yaw axis with Gaussian velocity profile (peak velocity/acceleration of 15°/s⁻¹·36.15°/s⁻² in this example) like that shown in E; no linear movement was presented (C). On signal present trials (B), in addition to the identical angular motion profile (F), nasooccipital linear motion was presented with a synchronized Gaussian velocity profile (peak velocity/acceleration 3.16°/s⁻¹·7.61/cm/s⁻²), generating traces like those shown in D.