This map reflected which neurons of the brain responded with electrochemical signals to mental processes.

He was the first scientist who demonstrated that the functional brain imaging is dependent on the oxygenation status of the blood, the BOLD effect.

[1] Seiji Ogawa trained as an applied physicist in the University of Tokyo and later earned a Ph.D. in chemistry from Stanford.

He worked for 33 years in Biophysics research at AT&T Bell Laboratories in Murray Hill, New Jersey, and was a Distinguished Member of the technical staff.

FMRI is now widely used in biology, neurobiology, psychology, neurology, and other branches of research and to diagnose the physiological basis of mental illnesses and organic brain dysfunction in clinical medicine.