NCBI ROFL: The pressing question this Penis Friday: how hard is hard enough?

By ncbi rofl | July 10, 2009 4:33 pm

Penile sufficiency: an operational definition.

“In an effort to obtain a more precise definition of erectile sufficiency for vaginal penetration 19 normal men were exposed to an erotic videotape and recordings of penile tumescence were obtained. The subjects were instructed to signal with a push button switch when they had attained an erection they judged sufficient for penetration. They were asked to signal a second time when a full erection had been reached. The results showed that in all but 1 case maximal tumescence was recorded polygraphically before the subjects signaled sufficiency.”

Thanks to Michael for today’s ROFL!

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About ncbi rofl

NCBI ROFL is the brainchild of two Molecular and Cell Biology graduate students at UC Berkeley and features real research articles from the PubMed database (which is housed by the National Center for Biotechnology information, aka NCBI) that they find amusing (ROFL is a commonly-used internet acronym for "rolling on the floor, laughing"). Follow us on twitter: @ncbirofl

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