Perception of eternalism
Perception of eternalism can be described as a drastic alteration in one's perspective of the fundamental mechanics behind the linear flow of past, present, and future timelines. During this state of mind, it subjectively feels as if all events or points across the timeline of existence are equally "real" and are eternally occurring simultaneously alongside each other.
This sudden change in perspective is in stark contrast to the standard and more intuitive view of time in which it typically feels as if it is only the present that is "real" while the past no longer exists and the future is yet to manifest. Despite this perspective, however, the directional flow of cause and effect is still felt to be in place and it is thus felt that the person still can only experience life one frame at a time using information which was acquired from "prior" events.
A common conclusion that is often reached during the experience of this state is that although one's life will inevitably end, it will occur forever within its own time frame and is therefore perpetual despite not being infinite in length.
Although this experience can occur on classic psychedelics like DMT and mescaline, it is most commonly and consistently experienced with psilocin, ayahuasca and LSD.
Psychoactive substances
Compounds within our psychoactive substance index which may cause this effect include: