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J Allan Cheyne

3 papers in the library · publishing 2007-2012

Papers

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Anomalous bodily-self experiences among recreational ketamine users.

Cognitive Neuropsychiatry 2012 Leanne K. Wilkins, Todd A. Girard, J Allan Cheyne

Out-of-body experiences present a unique paradigm to investigate cognitive and neural mechanisms of bodily-self processes and their disorders. Previous work on out-of-body experiences associated with sleep paralysis supported a model in which illusory movement experiences reflect disrupted bodily-self integration generating anomalous vestibular and motor sensations. Further disintegration and...

Mental representation of space: insights from an oblique distribution of hallucinations.

Neuropsychologia March 25, 2007 Todd A. Girard, Désirée L M A Martius, J Allan Cheyne

Three-dimensional spatial distributions of hypnagogic and hypnopompic hallucinations associated with sleep paralysis were used to investigate the internal representation of space. Left-right asymmetries in human preferences and abilities are well established. Parallel effects are also observed as lower-upper asymmetries. These parallels could reflect common underlying mechanisms or additive...

Paranoid delusions and threatening hallucinations: a prospective study of sleep paralysis experiences.

Consciousness and Cognition March 6, 2007 J Allan Cheyne, Todd A. Girard

Previously we reported a three-factor structure for hallucinations accompanying sleep paralysis (SP). These earlier analyses were, however, based on retrospective accounts. In a prospective study, 383 individuals reported individual episodes online providing further evidence for the three-factor structure as well as clearer conceptually meaningful relations among factors than retrospective...

DOI: 10.1016/j.concog.2007.01.002 (opens in new tab) Humans Hallucinations Sleep paralysis Health surveys +11