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.
Deoxygenated hemoglobin levels in the prefrontal cortex, measured using near-infrared spectroscopy, during a 1-minute session of electroacupuncture or 1-minute rest, averaged over a 5-round stimulus cycle. Data from 8 healthy subjects. Data are presented as the mean ± standard deviation. MM-mm, millimole millimeter; sec, second; Ch, Channel. Color images are available online.
