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.
Psychophysical threshold elevation for orientation and contrast discrimination following adaption to gratings of different orientations. These data indicate that orientation discrimination is mediated by off-channel populations tuned ∼20° from the target orientation while contrast discrimination is mediated by neurons broadly tuned to the target orientation.
