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.
Attenuation of signal power at optimal position compared to iso-centre after gradient artefact correction for first ten harmonics of the slice frequency, averaged over channels and subjects. Error bars: standard deviation over subjects. Asterisks indicate where a significant reduction was found: ** denotes p< 0.05 and * denotes p<0.1.
