Guest guest Posted August 19, 2003 Report Share Posted August 19, 2003 Extremely well-said. Bravo. On Monday, August 18, 2003, at 11:16 PM, wrote: > Sorry for the long rant. I just wanted you to know > that you are in my thoughts. > > Lori " Still, low oxygen levels in the paraventricular nucleus (PVN) of the hypothalamus of the brain can induce yawning. Another hypothesis is that we yawn because we are tired or bored. But this, too, is probably not the case because the PVN also plays a role in penile erection, which is not typically an event associated with boredom. " --Mark A. W. Andrews, associate professor of physiology and director of the Independent Study program at the Lake Erie College of Osteopathic Medicine, writing in SCIENTIFIC AMERICAN Quote Link to comment Share on other sites More sharing options...
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