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.
Experiment 4. Target lightness when both the perceived plane and perceived field of illumination of the target change from binocular to monocular viewing (the spotlight condition) and when only the perceived plane changes while the target's field of illumination remains the same (the shadow condition). The figure follows the same conventions of data presentation as in Figure 3.
