Commonly Used Measures
Many measures are part of modern psychophysiology including measures of brain activity such as ERPs, brain waves (electroencephalography, EEG), fMRI (functional magnetic resonance imaging), measures of skin conductance (skin conductance response, SCR; galvanic skin response, GSR), cardiovascular measures (heart rate, HR; beats per minute, BPM; heart rate variability, HRV; vasomotor activity), muscle activity (electromyography, EMG), changes in pupil diameter with thought and emotion (pupillometry) and eye movements, recorded via the electro-oculogram (EOG) and direction-of-gaze methods.
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