Monday, December 27, 2004
Berkeley neuroscientists have performed a really fascinating study on olfaction, and found that the brain has a sort of sensory gating mechanism, that tunes out most of the smells in our environment until they either exceed a certain intensity threshold, or are attended to. Really amazing stuff. (On top of the head, Harvard researchers seem to have identified a (the?) cause of hair graying.)
Another group of scientists are working on a new colonoscopy tool, that is supposed to be safer and more comfortable, based on the paddleworm. The device mimics the worm's physiology and movements to move itself up the intestine by 'pulling' rather than being pushed like a traditional endoscope. This apparently is thought to be less stressful to the body.