The presentation of the report "THE UNILATERAL VESTIBULAR HYPOFUNCTION" has been placed in the scope of the treatment technique, which resulted from the findings and experiences of the author could obtain by his investigations in the clinical cases with unilateral vestibular hypofunction. After having emphasized some main concepts concerning correct evaluation of unilateral hypofunction, which is the central theme of the report, the author indicates how these experiences led him to the conception of this treatment technique: THE VESTIBULAR HABITUATION TRAINING. It is intended for this category of dizzy patients, who usually were so resistant to be alleviated from their dizziness, viz. the cases with provoked or positional dizziness. The fundamental bases of this treatment are exposed. A survey of the literature concerning the various concepts and techniques of vestibular revalidation is followed by the description of the personal technique and the presentation of the first results.