PsyPost article: Breath-based meditation shifts the brain into a deeply relaxed state
From this article on how “Breath-based meditation shifts the brain into a deeply relaxed state”:
“We found that rhythmic breathing practice like Sudarshan Kriya Yoga allows an easier access to a deep state of meditation,” Tripathi told PsyPost. “EEG from participants were recorded before, during and after they were practicing the technique. EEG records brain activity which can be quantified into different rhythms like alpha, beta, theta, delta and gamma.”
“What we found was that the breathing activated the theta rhythms in the brain which allowed a practitioner to easily transition to a relaxed state with heightened theta-delta activity. This activity is somewhere between fully awake (alpha/beta dominant) to fully asleep (slow waves and delta dominant), suggesting that the practitioner is in a relaxed yet aware state which traditional texts of meditation have referred to as Turiya (fourth state of consciousness, the others being sleeping, awake and dreaming).”