In another example, the hormone noradrenaline, which is released when we suffer from stress and injuries, could be behind the feelings of love and peace many experience when they seem to be approaching death。
However, other scientists say we should not be so quick to dismiss people’s accounts。
Sam Parnia, of the University of Southampton, stressed that being able to trace something back to the brain does not mean it is not real。
Dr Parnia, who is close to completing a three-year study of hospital patients’ recollections of their near-death experiences, said: ‘Every experience, whether near-death or otherwise – such as depression, happiness and love – is mediated by the brain。
不少有过濒死体验的人曾表示当时感觉意识脱离躯体浮在上空,或被眩目的光芒吸引而去。但科学家表示,这种“灵魂出窍”的感觉只是大脑耍的小花招。
科学家证实,常见的濒临死亡时的怪异情景,比如感到漂浮在医院病床上,或走向隧道尽头的亮光,都是大脑试图厘清死亡过程时的反应。
来自爱丁堡大学和剑桥大学的科学家对死前大脑的变化进行了研究。这些变化导致了人们在临死前会产生特定的感觉。
研究员卡罗琳•瓦特表示,人们在濒死时看到“指引其前往来生的”亮光的现象,可能是因为体内用来处理光线的细胞死亡而产生的影像,我们的双眼平时利用这些细胞接受光线,并转化为图像。
【英科学家称“灵魂出窍”实为生理反应】相关文章:
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