National Geographic : 1962 Oct
Electrodes set in the scalp of Dr. Milledge enable Michael Gill and Thomas Nevison, Jr., to measure brain waves. Dr. Nevison develops 526 instruments for the United States Air Force. The author pedals a test bicycle at 14,860 feet. A tube that collects exhaled breath and an elec trocardiograph wired to his wrists record lung and heart reaction to measured work.