Automatic detection of tic activity in the Tourette Syndrome.

Michel Bernabei, Giuseppe Andreoni, Martin O. Mendez Garcia, Luca Piccini, Federico Aletti, Marco Sassi, Domenico Servello, Mauro Porta, Ezio Preatoni

Research output: Contribution to journalArticle

Abstract

This study presents a simple decision-support system for the detection of tic events during the Tourette Syndrome (TS). The system is based on a triaxial accelerometer placed on the patient's trunk. TS is a neurological disorder that emerges during childhood and that is characterized by a large spectrum of involuntary/compulsive movements and sounds. 12 subjects with chronic TS participated in the study and the tic events were both measured by the proposed device and visually classified through video recording. 3D-acceleration timeseries were combined through a module operator and their noise was eliminated by a median filter. Signal to noise ratio was improved by a nonlinear energy operator. Finally, a time-variant threshold was used to detect tic events. The automatic tic recognition showed a performance around 80 % in terms of sensitivity, specificity and accuracy. In conclusion, this simple, automatic and unobtrusive method offers an alternative approach to quantitatively assess the tic events in clinical and non clinical environments. This overcomes the limitations of the current motor tic evaluation which is done by clinical observation and/or video-inspection in specialized neurological centres.

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Tics
Tourette Syndrome
Video recording
Median filters
Decision support systems
Accelerometers
Signal to noise ratio
Inspection
Acoustic waves
Video Recording
Dyskinesias
Signal-To-Noise Ratio
Nervous System Diseases
Noise
Observation
Sensitivity and Specificity
Equipment and Supplies

ASJC Scopus subject areas

  • Computer Vision and Pattern Recognition
  • Signal Processing
  • Biomedical Engineering
  • Health Informatics

Cite this

Automatic detection of tic activity in the Tourette Syndrome. / Bernabei, Michel; Andreoni, Giuseppe; Mendez Garcia, Martin O.; Piccini, Luca; Aletti, Federico; Sassi, Marco; Servello, Domenico; Porta, Mauro; Preatoni, Ezio.

In: Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference, 2010, p. 422-425.

Research output: Contribution to journalArticle

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AU - Sassi, Marco

AU - Servello, Domenico

AU - Porta, Mauro

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