All About Cardiac Impedance Part 5: Data Editing

Now that we have talked about meaningful statistics in impedance cardiography and how they are calculated, we need to take a step back and make sure the data are clean and free of artifact. There are two steps for editing in impedance cardiography – R peak editing and Ensemble editing. R Peak […]

All About Cardiac Impedance Part 1: Introduction to Cardiac Impedance

All About Cardiac Impedance Cardiac impedance is a measurement of the mechanical activation of the heart. By recording cardiac impedance in conjunction with the electrical activation of the heart, the electrocardiogram (ECG), we can gain insight into sympathetic nervous system influence through measures such as Pre-Ejection Period, Stroke Volume, and Cardiac […]

All About ECG Part 4: Basic Artifact Correction

Last time we discussed what an artifact is, why it is important to correct artifact, and how artifact is identified in the MindWare analysis applications. The next step is actually dealing with that artifact. We are going to start with some examples which, while they may seem obvious, are important to […]

All About ECG Part 3: Identifying Artifact

Welcome to the third installation of the All About ECG series that is, as you might have guessed, an in-depth discussion on interpretation of the electrocardiogram, or ECG. We have gone through the basics in the first two blog posts, and now we can move on to a bit more interesting […]

All About ECG Part 2: ECG Component Identification

Welcome back to our blog series on analyzing the electrocardiogram, or ECG. Recall from last time the typical morphology of the ECG cycle: Today we are going to talk about how the MindWare applications identify two key components of the ECG waveform – the R peak and the Q point.   […]

All About ECG Part 1: Introduction to the Electrocardiogram

All About ECG The ECG, or electrocardiogram (also EKG), is a measure of the electrical activity of the heart. The recording and interpretation of the ECG signal yields several statistics that prove meaningful in the realm of psychophysiology. To examine activity in the parasympathetic nervous system, we can examine heart rate and […]