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) Screenshot of the “Brainloop” interface. The upper part of the screen was used to select the command. The available options were presented in a scroll bar in the lower part of the screen. (b) Available commands for operating Google Earth and used motor imagery tasks. (c) The four levels of selections. (d). Photographs of the “Brainloop” performance.
