AcqKnowledge can be used to obtain the power spectrum of any time domain waveform. The power spectrum indicates the power of each frequency component of the source time domain waveform. The power spectrum can be used to analyze a variety of physiological signals. The ECG (rate) and EEG signals are often categorized using spectral analysis.
This application note shows how to relate power in the time domain to power in the frequency domain using very simple signals in hopes of clarifying the explanation. The FFT in AcqKnowledge allows frequency representation using linear or logarithmic scaling. All discussions and analyses for this paper are done using linear scaling.
Get targeted solutions specific to the demands of recording data from large groups of people at the same time. Learn about Workflow when recording from multiple participants; Synchronizing all the data; Setting up participants efficiently; Tips and tricks for planning ahead; Using biopotential data, FNIRS, eye tracking, and more; Data monitoring and batch analysis techniques.
Register NowBIOPAC provides software and hardware that allows research teams to study stimulus presentation data. Here are a few notable studies using BIOPAC equipment for research on stimuli’s effects using ECG and SCL data. Your Face Scares Me This study addressed the impact of individual differences in social anxiety by examining the effects of perceptual load and stimulus valence when […]
BIOPAC’s comprehensive Introductory ECG Guide addresses fundamental to advanced concerns to optimize electrocardiography data recording and analysis. Topics include: ECG Complex; Electrical and Mechanical Sequence of a Heartbeat; Systole and Diastole; Configurations for Lead I, Lead II, Lead III, 6-lead ECG, 12-lead ECG, precordial leads; Ventricular Late Potentials (VLPs); ECG Measurement Tools; Automated Analysis Routines for extracting, […]
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