 This OAA shows a sharply reduced activity during meditative states, reflecting a block in the incoming flow of sensory information, resulting in a perceived lack of physical boundaries.According to Newberg and d'Aquili, 
Newberg and d'Aquili conclude that mystical experience correlates to observable neurological events, which are not outside the range of normal brain function.They also believe that 
"Why God Won't Go Away" "received very little attention from professional scholars of religion".