New text on St. Paul: St Paul Was Converted to Christianity by a Seizure:

“Saint Paul certainly had once an epileptoid, if not an epileptic seizure” - "The Varieties of Religious Experience" by William James, p35.

William James, the well-known psychologist and author on the history of religion, is convinced that St Paul's vision of Christ (his only "contact" with Jesus, ever) was a seizure (ref: Acts 9:3-9). His claim is scientifically likely and has been made by scientists and doctors many times in history₄. The prominent book on brain neurology, Neuroscience states that some people have a once-in-a-life seizure that can include visual hallucinations. In the general (non-epileptic) population, it occurs in 7 to 10 percent of people's lives₅.

(References exist on the page linked)

I've added a quote from Gross to my Clive Wearing text on emotions and the soul:

“Clive Wearing [...] lives in a snapshot of time, constantly believing that he has just awoken from years of unconsciousness. For example, when his wife, Deborah, enters his hospital room for the third time in a single morning, he embraces her as if they had been parted for years, saying, 'I'm conscious for the first time' and 'It's the the first time I've seen anybody at all'.”
"Psychology: The Science of Mind and Behaviour" by Richard Gross, p288</p>

Deborah Wearing, Clive's wife, says that "even if I just leave the room, he doesn't know if he's seen me just 10 minutes ago or 10 years ago". He is capable of showing all the emotions of any person, including his strong emotions for his wife, who he constantly misses. The brain damage that he suffered has caused all this, what are the implications for those that study the soul? Clive Wearing shows us that there is no 'soul' which is responsible for our emotions; or, if there is a soul, it is completely overridden by physical biochemistry. If damage to the brain effects Clive's emotions and experience of life in such a profound way, it is clear that no 'soul' plays a part in determining those emotions: life is purely biological.

Emotions are Biological: There is no Soul