More Martial Mahem

So in this post we are going to look at a slide presentation created by Charlotte Martial and presented recently (click on the diagram below to access the full PDF). Thanks Mak and Z for providing this. As we know Martial is more than sceptical about supernatural or paranormal explanations for NDEs. This presentation is very much along those lines in its attempt to provide a natural explanation for NDEs and also presents evidence from their NDE study which appears to be data that will be presented in a journal in the near future by her colleague Fritz.
First let’s look at the model she uses to explain the natural emergence of NDE’s in a life-threatening situation. I’m not going to look too closely here at the neurotransmitter explanation because frankly the interaction of neurotransmitters with their various receptors inside the brain are extremely complex, and while what is offered in the diagram may appear plausible, its relevance is a moot point. Why do I say that?

The neurotransmitter diagram is just the biochemical explanation underpinning the overarching hypothesis behind the Martial group’s natural explanation for NDEs. The central premise of the hypothesis is based on the idea that NDEs, or specifically the phenomenology associated with NDEs, are a product of evolutionary processes and provide a survival advantage. This hypothesis, which has been presented in various forms by sceptics over the past decade, ultimately fails to survive contact with serious scrutiny. There are a number of reasons why I say that:
- Prior to the discovery and implementation of CPR in the 1950s, authentic near death experiences were extremely rare. Moreover there is absolutely no evidence that NDE like experiences ever contributed towards survival when humans were threatened. For a neurological mechanism to emerge through evolutionary processes, it would be a trait that is relatively common and would’ve been observed and known about prior to the emergence of CPR. This is something that would’ve been observed during battles throughout history or when humans were hunted by predators. That just isn’t the case. You do not hear of hundreds of examples of soldiers having near death experiences and surviving battles. Martial tries to imply that this process kicks in when fight or flight is no longer an option. This is speculation based on absolutely zero evidence from the historical record, and does go against what we do know about the fight or flight system. So the only instance in which this might have occurred is on operating tables since the 1950s and this is not long enough to allow evolution to create this new mechanism.
- The idea that becoming floppy or imobile or in a state of peace is going to aid survival in the kinds of life-threatening situations where humans would be exposed to just does not make sense. Survival in life-threatening situations is almost always dependent on fighting back or running away from the life-threatening situation. Yes people might pretend to play dead but this would be a conscious process, and particularly when it comes to natural predators would prove futile as they would just be an easy meal, but even in a military situation it is well known that soldiers pretended to play dead and enemy combitants would go round putting their swords through bodies lying on the ground to make sure that the soldiers were dead. The other kinds of life-threatening situations usually caused by disease or old age or drowning or fire would not really see a benefit from the phenomenology of NDEs either. It’s nonsense.
- Moreover, when it comes to the actual definition of NDEs, Martial has created her own set of parameters which allow her to expand experiences away from the parameters that the consensus statement created. As a result, she is able to claim that fainting produces NDE like experiences. These experiences are nothing like authentic NDEs. This is one of the reasons why I’m much more supportive of Sam Parnia’s RED definition since the patient actually must have their experience in proximity to clinical death and the experiences must contain more clearly defined elements following a narrative arc.

Now we’ll look at the EEG data that is presented and will be in the paper being prepared by Fritz. Obviously without the full data set which will hopefully follow in a future publication it is difficult to tell precisely what is going on. However, it appears that they have data on the EEG of 11 unconscious patients, seven of whom didn’t have NDEs and 4 who did have NDEs. They then look at the complexity of the EEG signals of the two different groups and claim that the NDE group has a higher level of complexity. In one breath they state correctly that they can’t determine things with absolute precision, in the next they make the claim that the brain of NDE patients remains more organised and dynamically active. Any medical scientist of any repute looking at the bar charts representing this data and considering the tiny numbers of patients involved, would instantly dismiss any assertion. The error bars overlap, and there is insufficient difference between the two groups to draw any conclusions about the level of complexity between them. This won’t stop the Guardian and other atheist press outlets from claiming that this data shows that is are the result of brain activity. The fact that there is brain activity in both groups, combined with the reality that there is no statistical difference between the activities of both groups, and our knowledge that they are using a loose definition of NDE to characterise these groups, means that this study is not providing anything new (unless they have an authentic NDE with associated EEG…but even then for the reasons below, it is irrelevant).
Even if we saw significant differences in the brain activity between the NDE group and the non-NDE group, as we have said so many times association is not necessarily causation. Sam Parnia’s dissociation explanation is just as valid. If any such difference did exist it could be related to the consciousness separating from the brain.
Finally, while all this is interesting and gives sceptic something to talk about, none of this comes close to explaining validated OBEs and never will.






