starrymama 發表於 15-3-4 18:18 
個個係醫學。如果我認為係身體有問題,我會去做 body check, 因呢种身體反應可大可小. make sure 身體冇事 …
So you're trying to find a scientific explanation for something that is not scientifically proven. 
Ghosts and supernaturals fall into the category of pseudoscience. Documented scientific explanation for the illusion of ghosts and paranormal activities are: electric stimulation of the brain, infrasound, ions and automatism (an altered state of consciousness).
"My mission in life is not merely to survive, but to thrive; and to do so with some passion, some compassion, some humor, and some style." -- Maya Angelou (1928-2014)