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A STUDY OF THE SIGNIFICANCE OF THE HABIT-MOVEMENTS IN MENTAL DEFECTIVES

1912; American Medical Association; Volume: LVIII; Issue: 12 Linguagem: Inglês

10.1001/jama.1912.04260030236004

2376-8118

L. Pierce Clark,

Glycogen Storage Diseases and Myoclonus

This small study was originally undertaken for quite other reasons than that stated in the above title. It occurred to one of us (Clark) that in the course of clinical investigations of certain of the spasmophilia, such as the degenerative tics and habit-movements of so-called mental or cerebral type, and the varied forms of myoclonia whose pathogenesis is a neuropathic constitution, one ought to see these disorders most exquisitely in the proved degenerative field of mental defectives. Much to our surprise, on close investigation of the large material at our disposal (over 500 feeble-minded and 600 idiots and imbeciles) in the Randall's Island service, we were able to find but three patients suffering from tic. We might say that we follow the neurologic designation of tic, namely, that type of spasmodic movement occurring in varying degree of excursion, intensity and rhythm after the purpose of such movement has disappeared. We