Figure 1.
Individual audiograms (thin lines) of the test ears of the subjects. The thick line shows the mean audiogram, and the dashed lines show ± one standard deviation (SD) around the mean.
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.