Four examples of brain scans developed in the 20th century. Clockwise from top left: EEG, PET scan, series of CAT scan images, series of fMRI scan images. Sources: Wikipedia (Hans Berger, Jens Langner, Mikael Haggstrom, NIMH, all public domain).
Four examples of brain scans developed in the 20th century. Clockwise from top left: EEG, PET scan, series of CAT scan images, series of fMRI scan images. Sources: Wikipedia (Hans Berger, Jens Langner, Mikael Haggstrom, NIMH, all public domain).