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device for the analysis of cycle / cycle - alternance and / or the variability of the ventricular repolarisierungswelle of ecg signal
device for the analysis of cycle / cycle - alternance and / or the variability of the ventricular repolarisierungswelle of ecg signal
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机译：用于分析心电信号周期/周期和/或心室复极的变化的装置
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摘要
This device is extracted from the ecg signal, for each heart beat, a temporal segment t samples of the ventricular repolarisation, considered from a time t along a predetermined time origin. These t samples are stored for b, considered from the consecutive beat bth beating of the ecg signal, so as to select and storing a two-dimensional (ctm, bt, b) of txb signal samples contiguous in the time space - heart. A factor of local variance var (ctm, bt, b), measuring the variance of the signal level of the samples to the inside of the aggregate, is then weighed, then the square root of this factor of local variance is weighted by a factor of an alternation of a local w (ct, bt, b) that varies between a minimum, corresponding to the complete absence of an alternation, and a maximum corresponding to a permanent and relapsing on all the movements of the aggregate. The device, at output, delivers an index of the alternation and for tvarb function, for a given distortion, the factor of local variance weighted by the factor of a halfwave.
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