The Reader's Digest of September 2003 has an article on Near-Death Experiences (pp.94-100). These involve people who have been clinically dead but have revived and reported a sense of consciousness during the period they were "dead". This has often been cited as evidence of life after death. Others believe it is similar to drug-induced hallucinations and is caused by opiate-like substances, namely endorphins, that are released by a dying brain.
In recent years some medical researchers have speculated that these experiences may be evidence that consciousness does not reside solely in the brain. A study by researchers at Southampton General Hospital found that 11 per cent of those who had suffered cardiac arrest and survived had memory recall of the unconscious period. Six per cent of those resuscitated after cardiac arrest reported NDEs.
"These findings suggest that consciousness could exist in the absence of a functioning brain - that is, separate from the brain" - Dr Sam Parnia, registrar in respiratory medicine, who headed the research.
In a 2001 study, published in The Lancet, Dutch cardiologist Pim van Lommel tried to gauge the frequency of NDEs by interviewing 343 people who had suffered cardiac arrest and survived. He found that "eighteen per cent have a story of a very clear consciousness". So where is consciousness?
"I think [it is in every cell of the body]", says van Lommel. "We know that each day, 50 billion cells die." He points out that this intensive cell turnover means that, eventually, almost all the cells that make up "me" or "you" are new. And yet, we don't perceive ourselves as being any different from what we always were.
To van Lommel, it follows that "there must be a kind of communication between all our cells". In other words, all our cells - not just brain cells - "talk" to one another in a kind of network that keeps our experience of consciousness going seamlessly even as billions of cells die and billions of others are produced.
Could it be that the blood which flows through every part of the body maintains this "experience of consciousness" and comprises what we are as a soul/person?
Earnest