Physiological data provides a rich representation of a research subject with respect to their bodily information (i.e., heart rate, respiratory rate and depth of breathing, skin conductance, etc.). Examining physiological activity helps us to understand the perception and embodied experience of cognition, emotion, motivation, and more. Additionaly, physiological data is a key component in understanding physiological sources of signal variance in fMRI data. Collecting these data helps to provide more accurate models of fMRI time-series. It also provides a real-time method to monitor subjects during scanning. See the [*Community Practices* documentation](https://physiopy-community-guidelines.readthedocs.io/en/latest/index.html) for recommendations from key personnel in the field on physiological data collection and analysis.
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