Several of his test subjects reported Near-death experience-like audio or visual hallucinations.
Certain users report closed-eye hallucinations under the influence of psychedelics.
In a study where 13 healthy people were blindfolded for 5 days, 10 out of the 13 subjects reported visual hallucinations.
The new findings support those of a 1992 American study that used less precise brain imaging techniques with patients who reported auditory hallucinations.
Five people on the dig are reporting sensory and auditory hallucinations.
Crew were beginning to report hallucinations and four crewmen had been tranquilized at this point.
Most modern-day psychonauts who use deliriants report similar or identical hallucinations and challenges.
No wonder people might have stopped reporting hallucinations, even if they saw them.
The volunteers reported anxiety, somatic complaints, occasional hallucinations, and difficulty in judging the passage of time.
However, normal subjects also report auditory hallucinations to a surprising extent.