 According to Peter Kingsley, iatromantis figures belonged to a wider Greek and Asian shamanic tradition with origins in Central Asia.A main ecstatic, meditative practice of these healer-prophets was incubation (ἐγκοίμησις, enkoimesis).More than just a medical technique, incubation reportedly allowed a human being to experience a fourth state of consciousness different from sleeping, dreaming, or ordinary waking