Neuroscience, Mental Illness, and Spirit Possession

How does an anti-psychotic cause increased blood flow [(perfusion) http://en.wikipedia.org/wiki/Perfusion]  to the left temporal lobe of the brain in a patient with mental illness?  By the way, his family thought he was possessed by an evil spirit.  I also do not understand how the diagrams in this article show increased perfusion to the left temporal lobe. http://www.jmedicalcasereports.com/content/3/1/9325

Then there is this bizarre story about a church in Pensacola where the supposed Holy Spirit was physically felt and physically acted upon people in the church.  People are quick to explain away these phenomenon but what is really going on?  In situations like this it seems like more than the power of suggestion or a concentration of energy.  I have been to charismatic churches and I have felt wobbly and peaceful and I have been knocked over by the "Holy Spirit".  And it would last for a while afterward.  At a drum circle I felt and saw a similar energy but the light that I saw and felt seemed broken up into splinters rather than a consistent glow like my supposed experience with the Holy Spirit.  Admittedly, this article is very biased from a specific perspective but it still relates an interesting occurrence.  http://www.deceptioninthechurch.com/FBCPENSA.HTM

http://en.wikipedia.org/wiki/Trance