An official website of the United States government
Here's how you know
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.
(A) Timeline and stimuli used to test the oblique effect under different conditions. (B) Psychometric functions from a typical subject in an upright position for three base orientations.