(A) Pulse rates on each of 3 electrode channels (LH = left horizontal SCC, LA = left anterior, LP = left posterior) encoding components of 3 different 2 Hz, 50 deg/s rotations of the device on the animal’s head about each axis. (B) Biphasic stimulus current delivered via one pair of the electrodes immersed in 0.9% NaCl during 240 μA/phase pulses of 50, 120 and 200 μs/phase, with cathodic-to-anodic intrapulse interval set to 10% of the duration of each phase.