TY - GEN AU - Poersch,M AU - Köster,B TI - Tremor frequency shift in orthostatic tremor from low to high frequencies due to forceful muscle contractions SN - 0148-639X PY - 1996///0529 KW - Electromyography KW - Humans KW - Isometric Contraction KW - Muscle Contraction KW - Muscle, Skeletal KW - physiopathology KW - Posture KW - Tremor N1 - Publication Type: Case Reports; Letter ER -