Abstract 1. 1. The occurrence of vertigo, giddiness, lightheadedness, and syncope as manifestations of cerebral anoxemia resulting from cerebral arteriosclerosis is described. 2. 2. The rationale of the application of certain principles of therapeuticvenous occlusion for these symptoms is explained. 3. 3. The clinical history of a patient who manifested the afore-mentioned syndrome and the results of therapy with partial jugular venous occlusion is reported. 4. 4. Application of the principles involved in other conditions resulting from cerebral anoxemia is intimated.