What is "transliminality"

Transliminality (literally, "going beyond the threshold") was a concept introduced by the parapsychologist Michael Thalbourne, an Australian psychologist who was based at the University of Adelaide. It is defined as a hypersensitivity to psychological material (imagery, ideation, affect, and perception) originating in (a) the unconscious, and/or (b) the external environment (Thalbourne & Maltby, 2008). High degrees of this trait have been shown by Thalbourne to be associated with increased tendency to mystical experience, greater creativity, and greater belief in the paranormal, but Thalbourne has also found evidence that transliminality may be positively correlated with psychoticism. He has published articles on transliminality in journals on parapsychology and psychology.