From these studies we know that in our prospective study1 as well as in the other studies2,3 of patients who have been clinically dead (VF on the ECG), total lack of electric activity of the cortex of the brain (flat EEG) must have been the only possibility, but also the abolition of brain-stem activity, such as the loss of the corneal reflex, fixed and dilated pupils, and the loss of the gag reflex, is a clinical finding in those patients. However, patients with an NDE can report a clear consciousness, in which cognitive functioning, emotion, sense of identity, and memory from early childhood was possible, as well as perception from a position out and above their “dead” body. Because of the occasional and verifiable out-of-body experiences, like the one involving the dentures in our study,1 we know that the NDE must happen during the period of unconsciousness, and not in the first or last seconds of this period. There is also a well documented report of a patient with constant registration of the EEG during surgery for an gigantic aneurysm at the base of the brain, operated with a body temperature between 10 and 15 degrees Celsius. She was connected to a 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.15
So we have to conclude that NDE in our study,1 as well as in the American2 and the British study,3 was experienced during a transient functional loss of all functions of the cortex and of the brainstem. How could a clear consciousness outside one’s body be experienced at the moment that the brain no longer functions during a period of clinical death, with a flat EEG? Such a brain would be roughly analogous to a computer with its power source unplugged and its circuits detached. It couldn’t hallucinate; it couldn’t do anything at all. As stated before, up to the present it has generally been assumed that consciousness and memories are localized inside the brain, that the brain produces them. According to this unproven concept, consciousness and memories ought to vanish with physical death, and necessary also during clinical death or brain death. However, during an NDE patients experience the continuity of their consciousness with the possibility of perception outside and above one’s lifeless body. Consciousness can be experienced in another dimension without our conventional body-linked concept of time and space, where all past, present and future events exist and can be observed simultaneously and instantaneously (non-locality). In the other dimension, one can be connected with the personal memories and fields of consciousness of oneself as well as others, including deceased relatives (universal interconnectedness). And the conscious return into one’s body can be experienced, together with the feeling of bodily limitation, and also sometimes the awareness of the loss of universal wisdom and love they had experienced during their NDE.