1. Maine de Biran FPG (1929) The influence of habit on the faculty of thinking. Williams & Wilkins, Baltimore, MD
2. Semon R (1921) The Mneme. George Allen & Unwin, London
3. Lashley KS (1950) In search of the engram. Symp Soc Exp Biol 4:454–482
4. James H (1890) Principles of psychology. Holt, New York, NY
5. Scoville WB, Milner B (1957) Loss of recent memory after bilateral hippocampal lesions. J Neurol Neurosurg Psychiatry 20:11–21