I never said NDE's occur without any brain activity. What I actually said is that I think it very likely there is brain activity going on but beyond the detection levels of current EEG's. But this activity may not be ample to describe the extremely vivid experiences of NDE's (a recent study found the memories of NDE's to be more vivid than either dreams/imagined events or of real waking life events).
The brain definitely doesn't just go off like a light switch. I don't really buy this memory theory of brain consciousness transition, it may be part of it but I think it is a pretty superficial description of what is occurring with a fair few holes in. The fact of the matter is we do not have a 100% complete or undisputable explanation for NDE's and how they occur at present, and the same applies to OBE's.
You need to check out the Global Consciousness Project. This isn't a micky mouse pseudoscience project but a cutting edge initiative spear headed by Princeton University in the US. While some scientists are naturally going to be threatened and/or reluctant to examine this research on its own terms, Princeton University scientists calculate "one in a trillion odds that the effect is due to chance" on the random number generators.
The "Mindsight" experiences reported by those born blind during NDE's adds further weight to the likelihood that there is more going on with NDE's than simply oxygen deprivation or excess carbon dioxide or transitional states of consciousness (which may well be part of it, but I don't believe tell the full story). Important that science explores all these frontiers.
And yes we can measure the gravitational presence of black holes and dark/matter energy, but that is still telling us very little. Dark matter/energy are merely hypothetical names for what we think must be there from the gravity we can detect. But we know comparatively little about the nature of gravity itself! We have so much more to learn about so many things. And I think this applies to consciousness in a significant way.
I'm not sure the "pigs might fly" analogy works here. We KNOW pigs can't fly due to them lacking wings and gravity being against them. NDE's are a very different kettle of fish, what with them being a much harder thing to study, and with us lacking a full comprehensive theory of how they occur. As for the viable hit on the NDE AWARE study, I think a hit is highly unlikely even if they are viable. Whatever the case may be, NDE's are VERY intense experiences. When in the body, you may have the desire to assist in the science and go look at the number generator. When out of the body though and being drawn into a light of infinite compassion with your dead relatives beckoning you (or whatever) your priorities and perspectives are likely going to be radically altered. Furthermore, how much voluntary control and free movement do people have during NDE's to go where they will? From reports I have read it doesn't seem like much. I think the random number generator method, while I'm glad they are having a crack with it for studying NDE's would be much better suited for studying OBE's. I think science needs to better incorporate the very profound and undeniable effects NDE's have on the people that experience them. Human perceptions and conscious experiences such as NDE's/OBEs and related phenomena, as they cannot be measured and quantified in the same way as the contents of the physical universe, do not lend themselves to scientific quantification. Despite this they shouldn't be neglected however, as hard as they may be to study. After going through NDE's, people tend to have radical personality shifts, and they tend to lose the fear of death, and this is VERY common to these experiences.
Of course the brain is affected if consciousness is reduced or it is hallucinating, and vice versa. However if the brain is off line, unconscious and without blood flow, below the levels that can be detected via an EEG, it should not really be capable of experiencing hallucinations or other sensory phenomena, based on what we currently think we know about the brain.
Characteristics of Near-Death Experiences Memories as Compared to Real and Imagined Events Memories
Since the dawn of time, Near-Death Experiences (NDEs) have intrigued and, nowadays, are still not fully explained. Since reports of NDEs are proposed to be imagined events, and since memories of imagined events have, on average, fewer phenomenological characteristics than real events memories...
www.plosone.org
The brain definitely doesn't just go off like a light switch. I don't really buy this memory theory of brain consciousness transition, it may be part of it but I think it is a pretty superficial description of what is occurring with a fair few holes in. The fact of the matter is we do not have a 100% complete or undisputable explanation for NDE's and how they occur at present, and the same applies to OBE's.
You need to check out the Global Consciousness Project. This isn't a micky mouse pseudoscience project but a cutting edge initiative spear headed by Princeton University in the US. While some scientists are naturally going to be threatened and/or reluctant to examine this research on its own terms, Princeton University scientists calculate "one in a trillion odds that the effect is due to chance" on the random number generators.
The Global Consciousness Project
The Global Consciousness Project, home page, scientific research network studying global consciousness
noosphere.princeton.edu
The "Mindsight" experiences reported by those born blind during NDE's adds further weight to the likelihood that there is more going on with NDE's than simply oxygen deprivation or excess carbon dioxide or transitional states of consciousness (which may well be part of it, but I don't believe tell the full story). Important that science explores all these frontiers.
And yes we can measure the gravitational presence of black holes and dark/matter energy, but that is still telling us very little. Dark matter/energy are merely hypothetical names for what we think must be there from the gravity we can detect. But we know comparatively little about the nature of gravity itself! We have so much more to learn about so many things. And I think this applies to consciousness in a significant way.
I'm not sure the "pigs might fly" analogy works here. We KNOW pigs can't fly due to them lacking wings and gravity being against them. NDE's are a very different kettle of fish, what with them being a much harder thing to study, and with us lacking a full comprehensive theory of how they occur. As for the viable hit on the NDE AWARE study, I think a hit is highly unlikely even if they are viable. Whatever the case may be, NDE's are VERY intense experiences. When in the body, you may have the desire to assist in the science and go look at the number generator. When out of the body though and being drawn into a light of infinite compassion with your dead relatives beckoning you (or whatever) your priorities and perspectives are likely going to be radically altered. Furthermore, how much voluntary control and free movement do people have during NDE's to go where they will? From reports I have read it doesn't seem like much. I think the random number generator method, while I'm glad they are having a crack with it for studying NDE's would be much better suited for studying OBE's. I think science needs to better incorporate the very profound and undeniable effects NDE's have on the people that experience them. Human perceptions and conscious experiences such as NDE's/OBEs and related phenomena, as they cannot be measured and quantified in the same way as the contents of the physical universe, do not lend themselves to scientific quantification. Despite this they shouldn't be neglected however, as hard as they may be to study. After going through NDE's, people tend to have radical personality shifts, and they tend to lose the fear of death, and this is VERY common to these experiences.
Of course the brain is affected if consciousness is reduced or it is hallucinating, and vice versa. However if the brain is off line, unconscious and without blood flow, below the levels that can be detected via an EEG, it should not really be capable of experiencing hallucinations or other sensory phenomena, based on what we currently think we know about the brain.