Ed Gagliardi died of brain cancer.
 Galen's ideas were widely known during the Middle Ages, but not much further progress came until the Renaissance, when detailed anatomical study resumed, combined with the theoretical speculations of Ren Descartes and those who followed him
 Serotonin, for examplethe primary target of many antidepressant drugs and many dietary aidscomes exclusively from a small brainstem area called the raphe nuclei

