Abstract
The Ganzfeld experiment appears as a uniform and unstructured field that
may measure altered states of consciousness. The experiment uses a dim
light frequency projected on translucent eye covers combined with a
static audio frequency emitted through a pair of headphones. Since
altered states and alpha interactions appear in Ganzfeld studies, the
hypothesis here states that they may be internally related. Therefore,
the extraction filtered EEG data from combined stimulations of light and
static sound for their implications on consciousness. The systematic
search included PubMed, Scopus, Medline (OVID), and the Web of Science
databases to gather data. Between January 2000 and January 2022, only
four controlled trials studied the Ganzfeld-EEG stimulation. The results
verify the role of alpha interactions during hallucination-like imagery.
Furthermore, this review highlights a significant gap in
Ganzfeld-induced altered states of consciousness research.