Publisher's Synopsis
Excerpt from Cerebral Hyperemia the Result of Mental Strain or Emotional Disturbance
That an increased amount of blood ?ows through the cerebral vessels during mental activity, that these vessels may become permanently over-distended, and that profound interstitial changes may thereby be eventually produced in the brain-substance, are facts in regard to which I have no question. The first two are capable of actual demonstration; the last is a matter of inference, but Of inference so very decided in its character as scarcely to allow of the existence of a doubt. What these changes are, and what relation they bear to the kind and degree of cerebral action, we are far from being able to determine.
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