Sequence of events for orientation adjustment tasks.

(A) An example of a standard trial in Experiments 1, 2, 3, and 6. Participants viewed a single Gabor in each trial and reported its orientation by adjusting a response bar. In Experiment 2, stimuli were presented at the fovea. In Experiments 1, 3, and 6, stimuli were presented to either the left or right on separate runs. (B) A standard sequence of stimuli in Experiment 5. In this experiment, responses were interleaved with sequences of new stimuli. In a single trial, participants had to pay attention to an entire sequence of stimuli and to report the orientation of the last one. The sequence ended after the sixth stimulus in 80% of the trials and stopped earlier (at a random position in time) in the remaining 20% (catch trials).