The Neuro Science of Meditation and Higher States of Consciousness

By a Student of Silence

You know what’s wild? The deeper one sits in stillness, the less one feels like a fixed person. And yet, the clarity, the presence, the aliveness — it deepens. The neurological processes that occur during meditation involve the dissolution of typical self-identity and engagement with broader aspects of consciousness beyond one’s usual sense of self.

This isn’t about turning mystical experiences into sterile science. It connects traditional intuition with modern scientific insights. So here’s a dive into the brain’s architecture as it lets go of the self and opens the doors to non-local awareness — what many traditions call samadhi, turiya, or just being.

Prefrontal Cortex — The Boss of “Me”

Right behind the forehead sits the prefrontal cortex — the CEO of identity. It plans the day, replays conversations, and questions if one’s doing this whole “spiritual journey” correctly (spoiler: that’s still the ego talking). It is important to clarify that not all aspects of ego are detrimental. Rather, it is the negative self-construct of the ego that may prove unhelpful. The ego functions as a psychological construct through which individuals engage with and navigate the material world.

Prefrontal Cortex is also the part that gives rise to self-referential consciousness — a sense of time, personal narrative, and moral judgment. Essential for navigating daily life, but in meditation, the aim isn’t to run the day — it’s to dissolve the need for a manager altogether.

What Happens in Deep Meditation?

Meditation isn’t about adding more thoughts — it’s about subtracting them. And as one settles deeper, the mind begins to downshift.

One of the simplest gateways into this shift is as natural as closing the eyes. When this happens, the occipital lobe — the region at the back of the brain responsible for visual processing — dramatically reduces its activity. That means fewer visual impulses, fewer reactions to the environment, and ultimately, fewer thoughts being generated. It’s like unplugging the stream of visual data that feeds mental commentary.

When the visual field goes dark, the brain redirects energy inward. With less to interpret from outside, awareness starts to soften and settle within. It’s like dimming the lights in a theatre — suddenly, the inner screen becomes visible.

The Default Mode Network (DMN) Quiets Down

The Default Mode Network (DMN) is the brain’s backstage narrator. It includes parts of the medial prefrontal cortex, posterior cingulate cortex, and precuneus, and it’s most active when attention is not on the external world — during daydreams, inner monologues, or replays of the past.

The DMN gives rise to the illusion of a fixed personality. It does this by constantly referencing neurohormonal pathways formed by past experiences and conditionong. It interacts with the subconscious mind, drawing from belief systems, emotional memory, and identity structures — many of which were never consciously chosen.

Silencing the DMN isn’t just about finding peace. It’s about interrupting the identity-loop. It’s about surfacing the unconscious patterns and seeing them clearly. This is where meditation becomes shadow work — the ancient process of making the unconscious conscious.

When the DMN quiets, awareness no longer stares at the mirror of past conditioning. It becomes a mirror itself — still, vast, and clear.

Non-Local Awareness: If “I” am Not Here, Then Where?

This is the paradox. The more the ego drops, the more expansive consciousness becomes. So what’s supporting this non-local state?

1. Thalamus — The Gatekeeper Opens

The thalamus typically filters incoming sensory data. In deep meditation or trance, it relaxes. Instead of tight focus, awareness feels global, boundaryless. Everything is happening, yet nothing is being grasped.

2. Brainstem & Reticular Formation — Consciousness Without the “Self”

These ancient regions help maintain basic alertness. Even in delta states (deep dreamless sleep), advanced meditators show sustained awareness — consciousness without story.

3. Parietal Lobes — Spatial Boundaries Fade

These lobes map the body in space. When activity here decreases, the sense of separation dissolves. No inside, no outside. Just being. It’s not that a person is “in the room meditating.” The room is gone. There’s only presence.

4. Temporal Lobes — Mystical Gateways

These lobes often underlie mystical experiences — déjà vu, timelessness, and sensations of vastness. Subtle theta or delta rhythms here are associated with deep samadhi, trance, and even some psychedelic states.

Brain Anatomy – Introduction to Neuroscience

Brainwaves: The Rhythms of the Inner World

Each state of consciousness has its own frequency — like shifting radio stations on the dial of awareness:

In meditation, brainwaves often drop from beta to alpha, into theta, and — in very deep states — delta. Theta is typically associated with unconsciousness and Delta with deep sleep. Yet in rare cases, individuals maintain awareness in delta, reflecting a state where consciousness is no longer localised or personal — it simply is. (There is a gamma wave state also which is above beta)

So… Who Are You Without Your Brain?

Here’s where neuroscience gives a humble nod and turns the mic over to mysticism.

When the prefrontal cortex and DMN quiet down, the sense of “I” collapses, and yet... awareness remains. Not as a person, not as an identity, but as pure presence — silent, timeless, and boundless.

The brain does not necessarily generate awareness; rather, it may function by either attuning to or disengaging from it. This process is analogous to selecting different frequencies, where one might focus on self-referential thought patterns or, alternatively, become receptive to a broader, more universal awareness. Which requires practise.

Final Reflection: The Sky Appears When the Lights Go Out

The great mystics, yogis, and seers across traditions have all said some version of this: Awareness is not a product of thought. It is what remains when thought ends. Alternatively, awareness serves as the context in which thoughts emerge.

Meditation isn’t a brain hack. It’s a return — a remembering of what one is when there’s nothing left to perform, project, or perfect.

Yes, the prefrontal cortex might house the sense of a self.

But what holds the prefrontal cortex itself?

It’s like asking, “Which part of the theatre lets me see the stars?”

It’s not a spotlight. It’s when the lights dim that the stars appear.

When the identity quiets, and the noise of memory and projection fades, awareness reveals itself — vast, unbound, and silently radiant.