Harvey Williams Gushing, Harvard's great brain surgeon, celebrated his 62nd birthday last week in Toronto, by hypothesizing that stomach ulcers are caused by brain trouble.
Deep within the brain is a biologically ancient section called the diencephalon or tweenbrain.* Here the sensations on smell, sight, visceral activity, body position, temperature and pain pause a jiffy on their way to the thinking part of the brain. When one has a general feeling of discomfort, his tweenbrain is trying to tell his main brain an incoherent story....
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