How to hallucinate for FREE (no drugs)

(LukeJ) I stayed awake until I hallucinated, and here's what I [think I] saw visuals, tripping, alien spaceship, museum, magic

What is a hallucination?

After I got no mental rest

A "hallucination" is a perception in the absence of an external context stimulus that has the compelling sense of reality [6]. It is distinguishable from several related phenomena, such as

• dreaming (deep REM sleep), which does not involve wakefulness;
• pseudo-hallucination, which does not mimic real perception and is accurately perceived as unreal;
• illusion, which involves distorted or misinterpreted real perception; and
• mental imagery, which does not mimic real perception and is under voluntary control [7].

A hallucination also differs from a "delusional perception" in which a correctly sensed and interpreted stimulus (i.e., a real perception) is given some additional significance [8].

A hallucination can occur in any sensory modality — visual, auditory, olfactory, gustatory, tactile, and other (proprioceptive, equilibrioceptive, nociceptive, thermoceptive, chronoceptive, etc. because humans actually have many more than five or six senses).

Look at all these unseen beings!

A hallucination is referred to as "multimodal" if multiple sensory modalities occur [9, 10]. A mild form of hallucination is known as a "disturbance" and can occur in most of the senses above.

These may be things like seeing movement in peripheral vision or hearing faint noises or voices. More