Karl Lashley was one of the first to combine
behavioral sophistication in experiments with neurologic sophistication. Lashley become America’s most eminent early neuropsychologist, highly respected for his ingenuity in devising ways of disclosing the effects of brain operations
(Popplestone & McPherson, 1994). Although
Lashley accepted the localization of basic sensory and motor skills, he supported equipotential views with experiments on rats similar to those of Flourens on birds (Lashley, 1929). Lashley found that impairment in maze running in the rat was directly related to the amount of cortex removed.