Figure 2. Illustrations of the pitch direction discrimination threshold tasks.
A) Low tone held constant while high tone changes. B) High tone held constant while low tone changes.
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.