To obtain an accurate measure of cardiovascular activity researchers typically

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Measuring the intervals between heartbeats, also known as heart rate variability, provides a more accurate measure of cardiovascular activity than simply measuring the number of heartbeats per minute or systolic blood pressure. Heart rate variability is influenced by the activity of the autonomic nervous system, which controls heart rate and is involved in regulating many bodily functions. Measuring skin conductance can be a useful measure of sympathetic nervous system activity, but it is not specific to cardiovascular activity.

To Obtain an Accurate Measure of Cardiovascular Activity Researchers Typically