How are hypnagogic/ hypnogogic “hallucinations” different?

Question from a Member: Can you please tell us more about hypnagogic–hypnopompic hallucinations…? Hypnagogic hallucinations are “Vivid dreamlike experiences occurring at the transition from wake to sleep” and hypnopompic hallucinations are the same phenomena but occur during the transition from sleep to wake (American Academy of Sleep Medicine, 2014). For convenience and out of tradition,…