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Devices designed to provide a galvanic stimulus resulting in taste sensation. These devices typically incorporate two or more electrodes that are placed on a particular target (e.g., on both sides of the tongue). Gustometers are used primarily to assess local taste acuity (e.g., in the diagnosis of taste disturbances); they are also sometimes used in the neurophysiology or ear-nose-throat departments for differential diagnosis of Bell\'s palsy.
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