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.
Experimental setup. Subjects were positioned in supine with the pressure biofeedback unit (PBU) placed suboccipitally to detect increases in pressure with craniocervical flexion. Visual feedback of pressure level was provided by a manometer. Ultrasound transducer (US) was placed anterior and longitudinally for image recording during the CCFT.
