Figure A2.

FeyeM recorded from five human subjects while wearing masks with artificial eyes (A), fixating on a single spot surrounded by horizontal or vertical gratings (B), freely viewing a colorful image (C,D). Traces are depicted for arbitrary windows of 300 ms (A,B) or for fixational pauses – period starting 30 ms after a saccade and ending 10 ms before the next saccade. Raw traces are depicted in blue and smoothed traces (Butterworth, four poles LPF at 40 Hz) in red. Calibration bar (C) 6 arcmin. (D) Power spectra of the traces in (C). Data are courtesy of Dr. Moshe Fried.