Electrotecnia. Fundamentos teóricos y aplicaciones prácticas. Gray Alexander, Wallace. Aguilar – Foto Libros de Segunda Mano – Ciencias, Manuales y Oficios – Física, Química y Matemáticas: wallace. Compra, venta y subastas de Física. Download Citation on ResearchGate | Electrotecnia: fundamentos teóricos y aplicaciones prácticas / por Alexander Gray y G. A. Wallace | Traducción de.

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A low parameter value may show excellent positive agreement and positive predicted values at high sensitivity, but the reason is simply waloace there are almost continuous detections. High frequency oscillations in human brain. By design, the pre-detection stage has very high sensitivity, but the false positive rate of pre-detections is also high.

Also, we consider consecutive oscillations separated by less than a certain time interval t sep as a single FO. High-frequency oscillations during human focal seizures. Hence, the elecgrotecnia positive rate is expected to be lower than the reported value.

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A multistage knowledge-based system for EEG seizure detection in newborn infants. We will denote this operating point as S A random ordering of the channels will almost always result in a RD very close to 0. The sensitivity is high in all the patients with a reasonable electrotenia of clear FOs. The EEG signals were acquired at a Hz sampling rate, with a low pass antialiasing filter with Hz cutoff frequency.


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Supplementary Material S1 Click here to view. We simply select the threshold values that minimize the number of false positive detections for any given number of true positive detections.

He ekectrotecnia the author or co-author of more than publications in his electtrotecnia fields including the book Control in Power Electronics. Very fast rhythmic activity on scalp EEG associated with epileptic spasms. Then, by selecting only oscillations lasting longer than fours cycles plus this effective duration, we avoid false positives related to fast transients in the original signal.

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In the Supplementary Fig. This is a common necessity also for intracranial HFO detectors Staba et al. Author information Copyright and License information Disclaimer. Results When compared to an bray, the performance wsllace 15 focal epilepsy patients resulted in 3.

For the proposed detector we consider the S95 operating point a ggray choice than a lower sensitivity one. Misinterpretation and misuse of the kappa statistic. Some of the results of the automatic detector at the S95 operating point suggest that a proportion of the false positive events could actually be FOs not marked by the reviewer see some of the false positive examples in Fig.


The detector algorithm is as follows:. Interictal fast oscillations were specific in identifying children with epilepsy and localized ictal onsets Wu et al. Electrical Circuits 2 Co-requisite: Available online at www.

International Journal of Electronic and Electrical Wallzce. The feature used for the classification is the maximum value of this ratio among all the individual events that form a subject level detection. Performance curves of the automatic detector.

After all events were marked, the EEG was reviewed a second time by the same reviewer for verification. In fact, we found in our scalp recordings that the spikes, fast gamma, and ripple oscillations have all a similar signal to noise ratio in their electrotecnka frequency bands.

To minimize these artifacts the analyzed recordings correspond to non-REM sleep. How the efficiency of induction motor is measured? Elecfrotecnia ranking distance compares the ordering of the channels according to the number of detected FOs.

Then, the narrowbands used to detect the FOs should not be wider than the bandwidth of these FOs.