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3. Subjective postural vertical in peripheral and central vestibular disorders and Parkinson's disease;Bisdorff,1994
4. Perception of the postural vertical following prolonged bodily tilt in normals and subjects with labyrinthine defects;Clark;Acta Otolaryngol. (Stockh.),1964
5. Physiology of peripheral neurons innervating otolith organ in the squirrel monkey;Fernandez;J. Neurophysiol.,1976