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I was thinking of pam reynolds, who is referred to here:
So we have to conclude that NDE in our study was experienced during a transient functional loss of all functions of the cortex and of the brainstem. It is important to mention that there is a well documented report of a patient with constant registration of the EEG during cerebral surgery for an gigantic cerebral aneurysm at the base of the brain, operated with a body temperature between 10 and 15 degrees, she was put on the heart-lung machine, with VF, with all blood drained from her head, with a flat line EEG, with clicking devices in both ears, with eyes taped shut, and this patient experienced an NDE with an out-of-body experience, and all details she perceived and heard could later be verified. (8)
8 Sabom M.B. Light and Death: One Doctors Fascinating Account of Near-Death Experiences. ?The Case of Pam Reynolds? in chapter 3: Death: the Final Frontier, (37-52). Zondervan Publishing House, Grand Rapids, Michigan, USA. 1998.
I'm not sure if her case was peer reviewed. By peer reviewed, is it meant that it has been checked over by fellow doctors. fellow scientists, fellow astrolagers, fellow witches or fellow priests? If so, then there was a peer reviewed study in holland at various hospitals over a 13 yr period that was reported on by the lancet mag. The main author of the study, in rebutting arch skeptic shermer, described times to flat line from cardiac arrest:
The first ischaemic changes in the EEG are detected an average of 6.5 seconds after circulatory arrest. With prolongation of the cerebral ischaemia always a progress to an isoelectric (flat) line is monitored within 10 to 20 (mean 15) seconds from the onset of the cardiac arrest (3-6).
In case of a prolonged cardiac arrest of more than 37 seconds the EEG activity may not return for many minutes to hours after cardiac arrest has been restored, depending of the duration of cardiac arrest, in spite of the maintenance of adequate blood pressure during the recovery phase.
http://www.skepticalinvestigations.org/whoswho/vanLommel.htm
The article from lancet is here: http://profezie3m.altervista.org/archivio/TheLancet_NDE.htm
SS