A neural network approach for feature extraction and discrimination between Parkinsonian tremor and essential tremor
Pages 345 - 356
Abstract
BACKGROUND: Essential tremor (ET) and the tremor in Parkinson's disease (PD) are the two most common pathological tremor with a certain overlap in the clinical presentation.OBJECTIVE: The main purpose of this work is to use an artificial neural network to select the best features and to discriminate between the two types of tremors using spectral analysis of tremor time-series recorded by accelerometry and surface EMG signals.METHODS: The Soft-Decision wavelet-based technique is to be used in this work in order to obtain a 16 bands approximate spectral representation of both accelerometer and two EMG signals of two sets of data (training and test). The training set consists of 21 ET subjects and 19 PD subjects while the test set consists of 20 ET and 20 PD subjects. The data has been recorded for diagnostic purposes in the Department of Neurology of the University of Kiel, Germany. A neural network of the type feed forward back propagation has been used to find the frequency bands associated with the different signals that yield better discrimination efficiency on training data. The same designed network is used to discriminate the test set.RESULTS: Efficiency result of 87.5% was obtained using two different bands from each of the three signals under test.CONCLUSIONS: The artificial neural network has been used successfully in both feature extraction and in pattern matching tasks in a complete classification system.
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- A neural network approach for feature extraction and discrimination between Parkinsonian tremor and essential tremor
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Published: 01 July 2013
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