“…This makes the dichotomous classification of normality vs. pathology inappropriate and calls for admitting a large grey area of neither ordinary (viz., "normal") nor dysfunctional phenomena, the definition of which closely depends on the adopted Weltanschauung (view of the world) and Zeitgeist (spirit of times). They have been named in different ways, i.e., altered states of consciousness (ASCs), anomalous experiences (AEs), Exceptional Human Experiences (EHEs) and non-ordinary mental expressions (NOMEs), by different authors belonging to medicine, psychology and transpersonal psychology (Cardeña, Lynn J., andKrippner 2014, 2004;Palmer and Hastings 2013;Ludwig 1966;Facco, Agrillo, and Greyson 2015). ASCs have been faced from a strictly neurophysiological and psychobiological perspective in medicine (Boveroux et al, 2008;Vaitl et al, 2005), mainly conceiving them as a dysfunctional or anyway less-than-normal phenomena, thus skipping their psychological, cultural and existential implications.…”