Fig. 4.
Frame from a movie (Media 1 (1.3MB, AVI) ) of light propagation in the head model with the whole FS and without the FS. The red region indicates the FS.
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.