The light at the end of the tunnel, the last enigma of the human mind

-They propose several explanations for the near-death experiences.

-Could be due to a complex mixture of chemical effects on the brain.

-Other hypotheses point to the psychology or the mysteries of quantum physics.

Throughout life, the mind can play tricks on us or to see things that are not there, from the feeling of paralysis that accompanies some nightmares to the perception of leaving the body. It is relatively common recall experiences that have traditionally been regarded as paranormal, but may actually be due to deep states of sleep, the action of certain drugs or traumatic experiences that induce changes in the brain.

The near-death experiences, as the concern some people who have suffered a cardiac arrest or have been close to death, could be defined as a collection of all these anomalies: the patients perceive their consciousness away from his own body, envision a black tunnel with a light on the other hand, they feel surrounded by presences identified as spirits, angels or ghosts, and often accompanies them a feeling of fullness or state of euphoria.

These memories, which have been observed and collected in hospitals around the world have usually been interpreted from a mystical point of view, religious or paranormal, but many experts believe that groups should be incorporated into academic study. Some scientists believe, in fact, that the current neurology and psychiatry already have enough tools to explain the phenomenon, which is the sum of a series of experiments with extreme brain's own approaching death.

The British researchers Dean Mobbs, the Medical Research Council in Cambridge, and Caroline Watt, a psychologist at the University of Edinburgh, produced a study that reviewed a number of symptoms more common in the near-death experiences and offered a possible biological explanation for each one of them. The perception of being in a tunnel, for example, may be due to failure of peripheral vision, caused by lack of oxygen to the brain that occurs after suffering a cardiac arrest.

Via: elmundo