Imagine you are working at your desk and suddenly one of the fluorescent lights overhead starts buzzing.  You take notice of it since it is a new stimulus, but don’t think much of it.  The longer it persists, however, the more annoying it becomes.  But, eventually you are able to ignore it and continue with your work, until finally you don’t even realize that the buzzing noise still continues. Later that night you walk into a movie theater and are met by the overwhelming smell of fresh … [Read more...]