Threshold and mean response time taken from psychophysical optic flow motion experiments to determine eccentricity discrimination and contrast sensitivity in adults with autism compared to control group.

In Eccentricity task: threshold, is the minimum eccentricity angle measured by degrees from the central heading line. It indicates that participant was able to identify accurately the direction of heading of optic flow motion. A higher threshold means low sensitivity. This threshold was measured as a dependent value for each participant at each parametric value using adaptive staircase method.
In Contrast task: threshold presents the minimum dots luminance that participant was able to identify accurately the direction of optic flow motion. Different contrast levels were achieved by changing the luminance of dots with respect to the uniform gray background using an adaptive staircase method. Higher threshold also indicate low sensitivity.
Response time, is the time taken for the participants to response to the direction of optic flow motion at each parameter level and in both tasks. Time was taken from the stimulus end until the participant press the keypad to response. Time input is in millisecond.