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Cardiac Vagal Mood

Decent Essays

Cardiac vagal tone is proposed to be an index for” ...psychiatric impairment, including risk for depression” (Rottenberg 2005). In like manner, respiratory sinus arrhythmia (RSA), is proposed to be an index for cardiac vagal tone. In research, this “biological construct” is measured by means of an EKG (ECG). RSA varies during the breathing cycle (inhalation and exhalation) so then one will note heart rate variability. Interest in this topic drove me to look at, on a basic level, what exactly varies. Research on the topic explained that in the EKG the R-R intervals will be shorter during inhalation than in exhalation. And so studying RSA researchers can quantify the extent of the vagus nerve’s part in cardiac control. Many researchers have

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