Developmental neuropsychologist Dr. James Prescott has done extensive research into the neurological damage caused by circumcision. He has documented how the excruciating genital pain that is suffered, even "unconsciously," by a new-born male baby, has long-term, damaging consequences on his ability to separate the differences between pain and pleasure in love and intimate relationships. The brain system that has been designed for pleasure is, because of circumcision, encoded with pain. It is simply a fact that this reality disfigures subsequent experiences of pleasure -- and not just in the sexual context.
The blurring of pain and pleasure in the developing brain provides the foundation for many circumcised males to need pain in order to experience pleasure, or vice versa. It would not be unreasonable to argue, therefore, that much of the violence in a society could very well be rooted, in part, in the extent to which that society practices male circumcision.
Scientific studies have consistently shown that circumcision disrupts a child's behavioral development. Studies performed at the University of Colorado School of Medicine revealed that circumcision is followed by prolonged, distressed non-REM (rapid eye movement) sleep. Because of the infliction of unbearable pain on their neural pathways, circumcised babies withdrew into a type of semi-coma that lasted for days and sometimes even weeks.