i found this link while high..... its got loads of info on mj..and its effect on vision,hear,touch,space and time,body,control identy.... its really thourough (sp) lengthy.....so i suggest you the bits that interest so..... http://www.druglibrary.org/special/tart/tartcont.htm
think of the subjects who were chosen for this experiment...the probably got stoned alot! plus the scientists must have provided them with food for munchies