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This article includes supplementary video clips, available online at http://www.interscience.wiley.com/jpages/0885-3185/suppmat

FilenameFormatSizeDescription
mds21666-MDS21666.mpg13575KSegment 1. Isolated tongue tremor consists of continuous, rhythmic alternating protrusion-retrogression movements of the tongue.Segment 2. Video-fluometry shows rhythmic tongue movements slightly associated with the pharyngeal muscles but without the soft palate.Segment 3. Her tongue tremor completely disappears after the trial of trihexyphenidyl (4 mg/day).

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