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Real-Time Estimation of Pathological Tremor Parameters from Gyroscope Data
Bioengineering Group, Consejo Superior de Investigaciones Científicas, CSIC, Ctra. Campo Real, km 0.2 La Poveda, 28500, Arganda del Rey, Spain
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Received: 25 January 2010; in revised form: 26 February 2010 / Accepted: 1 March 2010 / Published: 16 March 2010
Abstract: This paper presents a two stage algorithm for real-time estimation of instantaneous tremor parameters from gyroscope recordings. Gyroscopes possess the advantage of providing directly joint rotational speed, overcoming the limitations of traditional tremor recording based on accelerometers. The proposed algorithm first extracts tremor patterns from raw angular data, and afterwards estimates its instantaneous amplitude and frequency. Real-time separation of voluntary and tremorous motion relies on their different frequency contents, whereas tremor modelling is based on an adaptive LMS algorithm and a Kalman filter. Tremor parameters will be employed to drive a neuroprosthesis for tremor suppression based on biomechanical loading.
Keywords: tremor; inertial sensors; MEMS gyroscope; tremor modelling; voluntary movement estimation; adaptive signal processing; Kalman filter; real-time estimation; neuroprosthesis
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Gallego, J.A.; Rocon, E.; Roa, J.O.; Moreno, J.C.; Pons, J.L. Real-Time Estimation of Pathological Tremor Parameters from Gyroscope Data. Sensors 2010, 10, 2129-2149.
Gallego JA, Rocon E, Roa JO, Moreno JC, Pons JL. Real-Time Estimation of Pathological Tremor Parameters from Gyroscope Data. Sensors. 2010; 10(3):2129-2149.
Gallego, Juan A.; Rocon, Eduardo; Roa, Javier O.; Moreno, Juan C.; Pons, José L. 2010. "Real-Time Estimation of Pathological Tremor Parameters from Gyroscope Data." Sensors 10, no. 3: 2129-2149.