The phenomenology of psychomotor epilepsy suggests that without a co-functioning limbic system, the neocortex lacks not only the requisite neural substrate for a sense of self, of reality, and the memory of ongoing experience, but also a feeling of conviction as to what is true or false. MacLean, Paul D., PhD. The Triune Brain in Evolution: Role in Paleocerebral Functions. p 578. NY: Springer, 1990.)