High Quality Content by WIKIPEDIA articles! Karl Spencer Lashley (1890–1958), born in Davis, West Virginia, was an American psychologist and behaviorist remembered for his contributions to the study of learning and memory. His failure to find a single biological locus of memory in the rat`s brain (or "engram", as he called it) suggested to him that memories were not localized to one part of the brain, but were widely distributed throughout the cerebral cortex. His work with localization and memory helped in the future research of the brain, which proved that the brain was more complicated than initially thought.