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.
The time-course of events during the Standing Wave of Invisibility illusion (SWI). A flickering target (a bar) of 50 ms duration is preceded and succeeded by two counter-phase flickering masks (two bars that abut and flank the target, but do not overlap it) of 100 ms duration that are presented at the time optimal to both forward and backward mask the target. Reprinted from Macknik (2006).
