Рет қаралды 401
About the talk - Dr. Picard writers: "Epilepsy has always provided a unique opportunity to get a better understanding of complex cognitive functions. In focal types of epilepsies, the seizures may be inaugurated by symptoms only experienced by the patient and not discernible to external observers. Rare patients suffering from epilepsy present a form of epilepsy called ecstatic epilepsy. During their epileptic aura, they experience a state of blissful mental clarity and a sense of union with the All. This state is close to the “mystical experience” which has been defined by the American psychologist William James by an ineffability (the experience defies expression), a noetic quality with a state of “knowledge”, transiency and passivity. Thus, a disruption of some brain functions related to an epileptic discharge in the brain may give rise to a state of non-duality and a feeling of ultimate reality.
We could demonstrate the major involvement of a cerebral structure called insula in the genesis of this ecstatic aura. Among its functions, the insula mediates the reception of the signals coming from the inside of the body (interoception). As the brain has been shown to function as a predictive machine to decipher the outside world, it always anticipates all the (external and internal) incoming signals, with a certain level of uncertainty, and generates an update of the predictions when necessary (when there is a mismatch between the predictions and the real incoming signals, i.e. surprise).
I hypothesized that the ecstatic state is related to the extinction of the interoceptive surprise. The epileptic discharge within the insula could prevent it from comparing the interoceptive predictions and the real interoceptive signals and from generating interoceptive surprise. This mimicking of a perfectly predicted physiological state of the body would allow the ecstatic quality of the experience, with an internal and outside world seeming to be understood and perfect.
Thus, this “mystical-type” experience may occur unexpectedly through a morbid condition such as epilepsy. Such a state could also occur in some expert meditators through training in the acceptance of uncertainty. During this talk I will share with you my views on the ecstatic or mystical-type experience and its brain correlates.