Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Perceived bar positions for the four subjects in the darkness (left), white line (middle), and ruler (right) conditions. Individual curves show a sliding mean with a temporal window of 40 ms. The surrounding shaded areas show the corresponding SE. Colors correspond to the real bar positions at –2.6° (red), 2.6° (green), 10° (blue), and 13.6° (black). The real bar positions are indicated by color-filled circles next to the ordinate. Gray bars show the mean saccade duration.
