Alderson-Day, B. & Fernyhough, C. (2015). Inner Speech: Development, Cognitive Functions, Phenomenology, and Neurobiology. Psychological Bulletin. 141(5), 931–965.

Barrett, WF (1926). Death Bed Visions. London: Methuen.

Bush, N. (2012). Dancing past the dark: Distressing near-death Experiences. Oak Island, NC. N.E Bush.

Chorvinsky, M. (1992). Our strange world. Fate. 45(7),31-35.

Chorvinshy, M. (1993). Our strange world. Fate. 46(5), 22-26.

Clark, K. (1984). Clinical interventions with near-death experiencers. In B. Greyson and Cobbe, F. (1882). Peak in Darien Experiences. London: Williams and Morgate Press.

Easton, E. & MacKenzie, F. (1988). Sensory-perceptual alterations: delirium in the intensive care unit. Heart and Lung. 17,229-37.

Elliott, R. & Wright, L. (1999). Verbal communication: what do critical care nurses say to their unconscious or sedated patients? Journal of Advanced Nursing. 29(6),1412-20.

Evans, B.M. (1976). Patterns of arousal in comatose patients. J. Neurol Neurosurg Psychiatr. 39,392-402.

Gabbard, G., Twenlow, S.& Jones, F. (1981). Do "Near-death experiences" occur only near-death? The Journal of Nervous and Mental Disease. 169, 374-377.

Germine, M. (1991), Consciousness and Synchronicity. Medical Hypotheses. 36, 277-283.

Gimenez, R. (1992). A metaphysical journey in a comatose state. Clinical Nurse Specialist. 6(4), 191-194.

Godwin, M. (1994). The lucid dreamer. New York: Simon & Schuster.

Green, A. (1996).An explorative study of patients’ memory recall of their stay in an acute intensive therapy unit. Intensive and Critical Care Nursing.12(3), 131-137.

Greyson, B. (1981). Toward a psychological explanation of near-death experiences. Anabiosis: the Journal of Near-Death Studies. 1, 88-103.

Greyson, B. (1983). The psychodynamics of near-death experiences. Journal of Nervous and Mental Disease. 171, 376-381.

Greyson, B. (1983). Increase in psychic phenomena following near-death experiences. Theta. 11,26-29.

Hall, J. (2015). Guyton and Hall Textbook of Medical Physiology. Philadelphia: W.B. Saunders Company.

Jacobsen, A. F. (2000). Research for practice: Caring for unconscious patients. Am J Nurs. 100 (1), 69.

Jennett B. & Teasdale G. (1977) Aspects of coma after severe head injury. Lancet. 1:878-881.

Lawrence, M. (2017). Selective attention during transpersonal experiences surrounding death. International Journal of Transpersonal Research. 9(2), 49-56.

Lawrence, M. (2015). The death view revolution:  A guide to transpersonal experiences surrounding death. Guilford, England: White Crow Books.

Lawrence, M. (1997). In a world of their own experiencing unconsciousness. Westport, CT.: Greenwood Publishing Group.

Lawrence M (1995). The unconscious experience. American Journal of Critical Care. 3,227-232
Lawrence M. (1995). Paranormal experiences of previously unconscious patients. Proceedings of an International Conference: Parapsychology and Thanatology. 122-148.

Leigh, K. (2001). Communicating with unconscious patients. Nursing times. 97(48),35-6.

Lidstone J., Meins E., & Fernyhough C. (2011). Individual differences in children’s private speech: Consistency across tasks, timepoints, and contexts. Cognitive Development, 26, 203–213. 10.1016/j.cogdev.2011.02.002.

Lindal, E. et al, (1994). The qualitative difference of visions and visual hallucinations: a comparison of a general-population and clinical sample. Compr-Psychiatry. 35(5),405-8.

Moody RA. (1975). Life After Life. Covington, Ga: Mockingbird Books.

Olson, M. (1988). The incidence of out-of-body experiences in hospitalized patients. Journal of Near-Death Studies, 62(3),169-174.

Osis, K. (1974). Out-of-body research at the American Society for Psychical Research. ASPR Newsletter, 1(27),1-3.

Osis,K. (1961). Deathbed Observation by Physicians and Nurses. New York: Parapsychology Foundation.

Ring, K. (1980). Life at Death: A scientific investigation of the near-death experience. New York: Coward, McCann and Geoghegan.

Ring, K. & Rosing, C.(1990). The Omega Project:an empirical study of the NDE-prone personality. Journal of Near-Death Studies. 8(4)211-239.

Ring, K. & Lawrence, M. (1993). Further Evidence For Veridical Perception During Near-Death Experiences. Journal of Near-Death Studies, Summer, 223-229.

Rogo, D.S. (2008). Leaving the body. New York: Simon and Schuster.

Rogo, D.S. (1984). Researching the out-of-body experience: the state of the art. Anabiosis Journal of Near-Death Studies. 4:21-49.

Sabom, M. (1982). Recollections of Death. New York: Harper and Row.

Schnaper, N. (1975). The psychological implications of severe trauma: Emotional sequelae to unconsciousness. Journal of Trauma 15, 94-98.

Tosch P. (1988). Patients' recollections of their posttraumatic coma. J Neuroscience Nursing, 20, 223-228.

Troost, B., Hutchings, L. (1989). Eye movements in loss of Consciousness. Bul. Soc. beige Ophtalmol.237, 209-226.