Office of Aerospace Medicine Technical Reports

FAA Office of Aerospace Medicine
Civil Aerospace Medical Institute


Report No: DOT/FAA/AM-64/10

Title and Subtitle: Duration as a measure of the spiral aftereffect.

Report Date: 1963 (reprint)

Authors: Freud SL.

Abstract: Describes an experiment that studied the reliability of duration as a measure of the spiral aftereffect. The results for 10 Ss indicate that duration is a highly reliable measure and that duration is a simple monotonic function of exposure-time. Note: this document is a reprint of Perceptual and Motor Skills 1963;17:643-646.

Key Words: method, vision testing, fixation period, speed of rotation.

No. of Pages: 4

Last updated: Friday, June 1, 2012