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jws-mds.21055.mpg13255K The videotape shows the patient executing a series of commands first with the right hand and then with the left hand: (1) bang a gavel, (2) saw a board, (3) stir a gallon of paint, (4) snap fingers, (5) dial a phone, and (6) tap a telegraph. During the execution of these commands, the patient displays considerable intermanual conflict, ideomotor apraxia, and action myoclonus. The left hand is held in a dystonic posture. Despite the dystonia, he is able to execute some commands, such as tapping a telegraph, but he is unable to perform others, such as dial a phone or stir paint. He is unable to snap fingers with the left hand and says that he cannot find his hand (alien limb phenomenon).

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