A study looks at the different brain waves associated with three different types of meditation.
Focused attention, characterized by beta/gamma activity, included meditations from Tibetan Buddhist (loving kindness and compassion), Buddhist (Zen and Diamond Way), and Chinese (Qigong) traditions.
Open monitoring, characterized by theta activity, included meditations from Buddhist (Mindfulness, and ZaZen), Chinese (Qigong), and Vedic (Sahaja Yoga) traditions.
Automatic self-transcending, characterized by alpha1 activity, included meditations from Vedic (Transcendental Meditation) and Chinese (Qigong) traditions.