There?s a related condition known as paruresis, or shy bladder. Sufferers find it nearly impossible to urinate in the presence of others. The neurological basis for the disorder is very poorly understood, but it seems to be the neurological opposite of what happened to the target of NASA sting. The inhibitory signal from the prefrontal cortex becomes hyperactive, for some reason. You might think of paruresis as the story of civilization run slightly amok. The brainstem acts on a primordial level, controlling our most basic behaviors. The prefrontal cortex evolved inhibitory centers to control impulses. Without it, we would urinate and defecate freely, and violate all manner of social norms. The importance of these inhibitory centers can be seen in patients with Alzheimer's, stroke victims, and those who have suffered catastrophic brain injuries. Oftentimes, they lose control over their excretory habits.
Source: http://feeds.slate.com/click.phdo?i=c254b528998a8df5a8b16c99559dd299
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