The expectation that there should be some correlation between mental and bodily functions will probably be admitted as a reasonable consequence of what is known about psychic influences on the organism. This applies in particular to the secretions and to muscle tonus, which appears to be susceptible in various ways to changing mental states. Whether metabolism and nutrition can be modified thereby is not yet evident. The alimentary secretory apparatus, in particular, has been supposed to be especially susceptible to changes in mental states, the alleged responses representing inhibition in some cases and stimulation in others. Thus, Farr and Lueders 4 come to the conclusion, from a study of the works on psychiatry, that gastric and other secretions are generally assumed to be diminished in depressed or melancholic states, and increased in excited or manic states. Less definite statements are made in regard to dementia praecox.
In evaluating the older
GASTRIC SECRETORY FUNCTIONS IN PSYCHOSES. JAMA. 1924;82(7):548–549. doi:10.1001/jama.1924.02650330040018