P300 and Heart Rate Variability Recorded Simultaneously in Meditation
Clinical EEG and Neuroscience May 1, 2019 Shirley Telles, Deepeshwar Singh, K. V. Naveen et al.
Meditative focusing increased sympathetic arousal, as shown by higher low-frequency heart rate variability (HRV), lower high-frequency HRV, and a faster average heart rate. Defocused meditation decreased average heart rate. Both forms of meditation improved attention, measured by increased P300 brain-wave amplitude; defocused meditation also reduced P300 latency, meaning participants responded faster to an auditory oddball task. The findings indicate that meditation's effects on attention and sympathetic activity depend on the type of meditation practiced.