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.
Number of headshakes (full cycles) per second (mean ± SD).
| Trial | Nodding Head | Nodding Head | Tilting Head | Tilting Head |
|---|---|---|---|---|
| Eyes Open | Eyes Closed | Eyes Open | Eyes Closed | |
| headshakes per second, averaged over all participants | 2.0 ± 0.6 | 2.1 ± 0.6 | 1.8 ± 0.4 | 1.7 ± 0.4 |
