Donald Olding Hebb nöropsikoloji'nin babası olarak bilinen, bu alanda ciddi çalışmalar yapmış ve birçok meslektaşına esin kaynağı olmuş Kanadalı psikolog.
"Modern psychology takes completely for granted that behavior and neural function are perfectly correlated, that one is completely caused by the other. There is no separate soul or lifeforce to stick a finger into the brain now and then and make neural cells do what they would not otherwise."