Fig. 1.
Cardinal signs and symptoms of motion sickness and criteria for grading motion sickness severity (Graybiel et al. 1968b)
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.