Figure 1.

Experimental procedure for Experiments 1–4. Clocks were presented in regions of the visual field that were either unadapted, or adapted to either 5 or 20-Hz drifting concentric gratings. (A) In Experiments 1 and 2, observers compared the hand position (Experiment 1) or speed (Experiment 2) of continuously running clocks in adapted and unadapted locations. (B) In Experiment 3, one of the clocks was transiently cued, and at the end of each trial observers indicated the time they saw on the cued clock at the time of the cue. (C) In Experiment 4, clocks were stationary with either leftward or rightward oriented hands. One of the clocks was cued, and observers reported the orientation of the clock hand on the cued clock as quickly as possible.