Binaural beats with 4-8 Hz, which corresponds to the brain state - deeply relaxed, inward-focused. It starts at 8 Hz and moves to 4 Hz, slower beats.
Theta brainwaves occur most often in sleep but are also dominant in deep meditation. Theta is our gateway to learning, memory, and intuition. In theta, our senses are withdrawn from the external world and focused on signals originating from within. It is that twilight state which we normally only experience fleetingly as we wake or drift off to sleep. In theta, we are in a dream; vivid imagery, intuition, and information beyond our normal conscious awareness. It’s where we hold our ‘stuff’, our fears, troubled history, and nightmares.