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Ventricular Late Potentials (VLPs)

AcqKnowledge ECG Average

Apply signal averaging on the ECG signal to detect VLPs, the small-amplitude, short-duration waves that occur after the QRS complex and are precursors to cardiac arrhythmias. Perform off-line averaging to trigger on the R-wave peaks and average the time delta after each peak, then use the measurement tools to calculate the duration and RMS values of the VLPs. If the ECG complex analysis is run before performing the ensemble average, the software will indicate how many events were identified within the selected area of data.

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Fundamentals of Physiological Data Recording

Basic principles of physiological data collection covers fundamentals of data collection and equipment configuration equipment to help you refine experiment protocols and avoid costly missteps. Frazer Findlay, CEO of BIOPAC, discusses common mistakes with physiology recording and shares his secrets for collecting great data. Topics include: How to prep a subject and where to place electrodes; Which type of electrodes work for different body signals; Analog to Digital Conversion; Sample rates (correct vs. incorrect); Filtering; and Scaling and calibration.
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