Internet Porn: Worse than Crack?

Mary Anne Layden, co-director of the Sexual Trauma and Psychopathology Program at the University of Pennsylvania's Center for Cognitive Therapy, called porn the "most concerning thing to psychological health that I know of existing today."

Pornography addicts have a more difficult time recovering from their addiction than cocaine addicts, since coke users can get the drug out of their system, but pornographic images stay in the brain forever, Layden said.

"Pornography really does, unlike other addictions, biologically cause direct release of the most perfect addictive substance," Satinover said. "That is, it causes masturbation, which causes release of the naturally occurring opioids. It does what heroin can't do, in effect."

It is unclear what the consequences of Thursday's hearing will be since it was not connected to any pending or proposed legislation.