Figure 2.

Results from Experiment 1. (A) Crowded visual acuity of observers (n = 59) who were either unadapted or who had adapted to receding motion. Gray bars indicate the mean acuity estimate for each condition, and black lines (error bars) denote ±1 SEM. Each pair of colored discs represents data from one observer. (B) is as (A) except observers (n = 32) adapted to looming motion. Adaptation to receding motion improves acuity, but adapting to looming motion does not impair acuity. Both adaptation conditions lead to modest but reliable improvements in visual acuity.