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[The Bouttier test. Significance of resistance to pressure for neurological diagnosis (author's transl)].

In 1922 Bouttier described the "pressure test". With reference to later works by Bouttier, not published at the time, the author demonstrates the role which the Bouttier test can play in the differential diagnosis of various neurological diseases (tumours of the cerebellum, the cerebellopontile angle or the pituitary; frontal tumours, cerebral atrophy, pseudobulbar palsy, Parkinson's disease). The physiological mechanisms which could play a part in these reactions are briefly considered. (Acta Neurol. Belg, 1977, 77, 193-201).