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.
Individual CSF flow profiles during inspiration (orange) and expiration (blue) for all subjects, for the first measurement. Positive CSF flow is in cranial direction, negative CSF flow is in caudal direction. For most subjects, the CSF flow profile during inspiration is above the CSF flow profile during expiration. Subject 3 showed cranial net flow during expiration, and caudal flow during inspiration. Subjects 11 and 12 showed similar flows during inspiration and expiration.
