TY - GEN AU - Bjork,L AU - Wetzel,A TI - A positional biofeedback device for sitting balance. Suggestion from the field SN - 0031-9023 PY - 1983///1008 KW - Biofeedback, Psychology KW - physiology KW - Blindness KW - physiopathology KW - Cerebrovascular Disorders KW - Electromyography KW - instrumentation KW - Female KW - Humans KW - Postural Balance KW - Posture N1 - Publication Type: Case Reports; Journal Article UR - https://doi.org/10.1093/ptj/63.9.1460 ER -