anecdotal evidence from narrative self-reports suggests that drug-induced ego dissolution may be related in some cases to reversible retrograde amnesia, specifically regarding abstract information about oneself (i.e., semantic autobiographical memory). For example, one subject responding to an online questionnaire on ego dissolution reported “forgetting that I was a male, a human, a being on Earth—all gone, just infinite sensations and visions,” while another stated “I no longer felt human. I didn't remember what a human was”

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