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Online Tremor Suppression Using Electromyography and Low Level Electrical Stimulation

AutorDosen, Strahinja; Muceli, S.; Dideriksen, Jakob L.; Romero, Juan P.; Rocón, Eduardo ; Pons Rovira, José Luis ; Farina, Dario
Palabras claveAfferent stimulation
Tremor demodulation
Electrical stimulation
Tremor suppression
Fecha de publicación2014
EditorInstitute of Electrical and Electronics Engineers
CitaciónIEEE Transactions on Neural Systems and Rehabilitation Engineering 23: 385- 395 (2015)
Resumen1534-4320 (c) 2014 IEEE.Tremor is one of the most prevalent movement disorders. There is a large proportion of patients (around 25%) in whom current treatments do not attain a significant tremor reduction. This paper proposes a tremor suppression strategy that detects tremor from the electromyographic signals of the muscles from which tremor originates and counteracts it by delivering electrical stimulation to the antagonist muscles in an out of phase manner. The detection was based on the Iterative Hilbert Transform and stimulation was delivered above the motor threshold (motor stimulation) and below the motor threshold (sensory stimulation). The system was tested on 6 patients with predominant wrist flexion/extension tremor (4 with Parkinson disease and 2 with Essential tremor) and led to an average tremor reduction in the range of 46-81% and 35-48% across 5 patients when using the motor and sensory stimulation, respectively. In one patient, the system did not attenuate tremor. These results demonstrate that tremor attenuation might be achieved by delivering electrical stimulation below the motor threshold, preventing muscle fatigue and discomfort for the patients, which sets the basis for the development of an alternative treatment for tremor
Versión del editorhttp://dx.doi.org/10.1109/TNSRE.2014.2328296
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