Mid-latency auditory evoked potentials in 2 meditative states.
Clinical EEG and Neuroscience April 1, 2012 Shirley Telles, Bhat Ramachandra Raghavendra, Kalkuni Visweswaraiah Naveen et al.
Meditation, as described in traditional yoga texts, delays auditory information transmission at the level of the medial geniculate and primary auditory cortex. In 60 participants, the Na and Pa components of mid-latency auditory evoked potentials showed prolonged latencies during meditation compared to random thinking, nonmeditative-focused thinking, and meditative focusing. Meditative focusing did not produce this effect. The findings suggest that meditation, but not mere focused attention, alters early sensory processing.