An official website of the United States government
Here's how you know
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.
Examples of activations TTR to the task block
design. The CTR component is shown with a dotted line. Bolded portions
indicate time periods when TTR activations appear task-related.