Brain waves - how to hit the optimal frequency
Brainwaves - a yogic journey through the layers of consciousness
Modern neuroscience and ancient yogic wisdom, surprisingly enough, point in the same direction: consciousness moves through different states, depending on how “fast” or “slow” the brain oscillations are. Western science measures this as brain waves – electrical frequencies in the brain, given in Hertz (Hz). The yogic tradition has long spoken of something similar through the five koshas, the layers of consciousness that move from the dense and physical to the subtle and formless.
Beta (approx. 13-30 Hz)
The awake, active everyday state - where most of us find ourselves for the majority of the day.
Occurs when we think, speak, solve tasks and are in dialogue with the world around us.
Advantages: sharpness, drive, the ability to navigate specific tasks and make decisions.
Too high Beta over time is experienced as restlessness, stress and a mind that never completely calms down - a clear invitation to lower the frequency.
Relates to Annamaya Kosha, the physical body and "external" action.
Alpha (approx. 8-13 Hz)
The relaxed, but still awake state - often called "flow".
Occurs when we close our eyes, relax, are in nature, in light meditation, or just before sleep takes us.
Benefits: inner peace, increased creativity, deeper presence, better learning and memory, and a beginning access to intuition.
Acts as the bridge between the conscious and subconscious mind.
Relates to Pranamaya Kosha, the energy body, where the breath and life force (prana) emerge more clearly.
Theta (approx. 4-8 Hz)
Deep relaxation, meditation and dream sleep (REM).
The state Yoga Nidra typically works in - the "yogic sleep" where the body rests completely while consciousness remains present.
Benefits: deep healing, access to the subconscious, increased creativity and intuition, emotional processing, and an experience of contact with something greater than the logical, thinking mind.
Relates to the Manomaya Kosha, the mental and emotional layer where old patterns and impressions can be softened and released.
Delta (approx. 0.5-4 Hz)
The deepest, dreamless sleep - the body's most important phase for regeneration and healing, where tissues are repaired and the immune system is strengthened.
Experienced meditators can, in deep meditative states, move into Delta while a thin thread of consciousness remains present - a state often described as "resting in the formless".
Benefits: total physical recovery, and on a subtle level, an experience of letting go completely.
Relates to the Vijnanamaya Kosha, the wisdom layer, where insight arises beyond the thinking brain.
Gamma (approx. 30-100 Hz)
The fastest of the brain's measurable waves, associated with sharp insight and an experience of a unified, expanded mind.
Measured in experienced meditators - including in studies of Tibetan monks during compassion meditation - in states of deep, expanded presence.
In the yogic tradition, the Gamma state can mirror glimpses of Samadhi - the state of oneness and dissolved separation, which is the highest goal of yoga.
Benefits: an experience of unity, clarity, compassion, and an awareness that reaches beyond the personal mind.
Relates to the Anandamaya Kosha, the innermost layer of being - the body of happiness and oneness.
From outer action to inner silence
The entire spectrum - from the bustling activity of Beta to the glimmer of infinity of Gamma - can be seen as one continuous journey inward, through the five koshas, towards what yoga has long pointed to as our deepest nature. Asana, pranayama, Yoga Nidra and meditation, seen through these lenses, are not random techniques, but conscious tools for moving between the frequencies - and for, time and again, returning home to the silence that lies beneath them all.
Yoga nidra and brain waves
When practicing yoga nidra, the goal is to reach the Alpha brain wave frequency, where the magic happens. This is where you increase your imagination, memory, ability to visualize, learning, receptivity, inner awareness and creativity. This state is called the connection between body and mind.
When you dive into the Alpha frequency through yoga nidra, you are in deep relaxation.
Your eyes are closed and you slip into a lovely light daydream or light meditation.
Here you recover, release stress right down to the cellular level and relax so deeply that the body's healing process is activated Big Time! A 30 minute session is said to be equivalent to 3-4 hours of sleep.
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