The Three States of Consciousness in Advaita Vedānta
In Western philosophy and modern neuroscience, investigations into human consciousness almost exclusively take their stand in the waking state. The waking world of physical objects, people, time, and space is assumed to be the primary reality, while dreams are viewed as mere psychological or neurological by-products, and deep sleep is regarded as a passive state of unconsciousness. Traditional Advaita Vedānta, as expounded in the Upaniṣads and systematised by Ādi Śaṅkara, identifies a fundamental flaw in this approach: examining reality solely through the lens of waking experience provides only a fraction of the overall picture.
To arrive at an unobstructed understanding of the Self (Ātman), Advaita employs a rigorous analytical methodology known as avasthā-traya-prakriyā—the systematic enquiry into the three states of consciousness. By analyzing the waking state (jāgrat), the dream state (svapna), and the deep-sleep state (suṣupti), Advaita demonstrates how our sense of identity shifts across different realms of experience. Each state possesses its own unique field of operation, its own distinct ‘experiencer’ ego, and its own subjective universe.
1. The Waking State (Jāgrat): The Gross External Realm
The first aspect of our empirical experience is the waking state, known in Sanskrit as jāgrat avasthā. In this state, consciousness operates through the gross physical body and the outward-turned sense organs (jñānendriyas) to interact with the external material world. The individual waker is technically called viśva (at the microcosmic level) or vaiśvānara (at the macrocosmic level), representing the Self identified with the gross physical frame.
The Māṇḍūkya Upaniṣad (Mantra 3) defines this state as follows:
The first aspect of the Self is vaiśvānara, whose sphere of activity is the waking state, whose consciousness is turned outwards (bahiṣprajñaḥ), who possesses seven limbs and nineteen interfaces, and who is the enjoyer of gross physical objects.
In the waking state, we take ourselves to be a physical body born in a specific time and place, navigating a shared, public universe governed by physical laws. Advaita classifies this realm as vyavahāra—transactional reality. It is characterized by dvaya kāla (‘two-fold time’), meaning that physical objects exhibit objective continuity and persist across time independently of our immediate observation.
The waker ego (viśva) firmly believes that the physical world is objectively real and that its happiness depends on acquiring external gross objects. However, Śaṅkara points out the logical limitation of this identification: our physical body, thoughts, and sensory powers undergo radical changes over decades, making it impossible for the changing body-mind complex to constitute our unchanging identity. Furthermore, the waker’s conviction that the physical world is the ‘only’ reality is a bias born solely from the perspective of being awake.
2. The Dream State (Svapna): The Subtle Inner Realm
When the gross physical body falls asleep, consciousness shifts into the dream state, known as svapna avasthā. In dream, the external senses and physical body lie inactive on the bed, but the mind remains extraordinarily active. Consciousness is turned inward (antaḥprajñaḥ), projecting a complete, subtle universe constructed entirely out of mental impressions (vāsanās), desires (kāma), and fears (bhaya) accumulated during waking life.
The individual dreamer is called taijasa, a term derived from tejas (light), meaning ‘consisting of light’. The Māṇḍūkya Upaniṣad (Mantra 4) describes this state:
The second aspect of the Self is taijasa, whose sphere of activity is the dream state, whose consciousness is turned inwards (antaḥprajñaḥ), who possesses seven limbs and nineteen interfaces, and who is the enjoyer of the subtle, private world.
In dream, the mind acts as its own illumination, fashioning an entire subtle landscape complete with dream bodies, time, space, mountains, rivers, and social interactions. The Bṛhadāraṇyaka Upaniṣad (IV.3.9) vividly captures this creative power:
‘When he dreams, he takes away a little of the impressions of this all-embracing waking world, himself puts the body aside, and creates a dream body in its place, revealing his own luster by his own light—and dreams. In this state, the man himself becomes the light.’
Advaita categorizes dream experience as prātibhāsika—illusory or subjective appearance. While dreaming, the dream world appears completely real, consistent, and urgent to the dreamer ego (taijasa). A dream thirst can only be quenched by a dream drink. It is only upon waking that the waker disparages the dream as ‘unreal’.
Gauḍapāda, in his Kārikā on the Māṇḍūkya Upaniṣad, points out that both waking and dream states share the same fundamental epistemological structure: both involve a witnessing consciousness, an active mind, and perceived objects. Both states are marked by two-fold limitations: non-apprehension of reality (āvaraṇa, obscuring/ignorance) and misapprehension of reality (vikṣepa, projection/error).
3. The Deep-Sleep State (Suṣupti): The Causal Mass of Peace
When the mind and subtle senses resolve into an unmanifest state, consciousness enters deep, dreamless sleep—suṣupti avasthā. Unlike waking and dream, deep sleep is completely free from subject-object division (nirvikalpa). There are no external physical objects, no internal dream projections, and no mental agitations.
The individual sleeper in this state is called prājña (‘the one who knows/understands’). The Māṇḍūkya Upaniṣad (Mantra 5) defines deep sleep:
That is the deep-sleep state in which the sleeper desires no desire and sees no dream. Everything has become undifferentiated (ekībhūtaḥ), a homogenous mass of Consciousness (prajñānaghanaḥ), full of bliss (ānandamayaḥ), indeed the enjoyer of bliss (ānandabhuk)…
Popular thought often assumes that deep sleep is a state of total unconsciousness. Traditional Advaita vigorously refutes this view. Consciousness is never absent in deep sleep; rather, there are no physical or subtle objects present for Consciousness to illumine. Śaṅkara uses the metaphor of a light shining into deep space: if there are no celestial objects to reflect the light, space appears black, yet the light itself is fully present.
This is corroborated by the Bṛhadāraṇyaka Upaniṣad (IV.3.23):
‘That it does not see in that state is because, though seeing then, it does not see; for the vision of the witness cannot be lost, because it is imperishable. But there is not that second thing separate from it which it can see.’
Deep sleep is experienced as a state of profound peace and bliss (ānandabhuk) because all perceived limitations, duality, and anxieties of the mind are temporarily suspended. However, this bliss is the ‘bliss of ignorance’. Deep sleep is called the causal state (kāraṇa avasthā) because, although duality is unmanifest, the seed (bīja) of Self-ignorance (avidyā) remains intact in a latent form. This is why, upon waking, the individual resumes their previous identity, desires, and karmic tendencies.
4. Other States of Consciousness: Swoon, Coma, and Trance
Seekers often ask how other conditions—such as fainting, coma, hypnotic trances, or general anesthesia—fit into this framework. In the Brahma Sūtras (III.2.10), Maharṣi Vyāsa and Śaṅkara analyze the state of a swoon or coma (mūrchā). Śaṅkara explains that a coma cannot be classified as waking or dreaming (since external and internal perceptions are absent), nor can it be identified purely as healthy deep sleep (since it is caused by bodily trauma rather than natural rest).
Instead, Śaṅkara describes a swoon as half-sleep and half-death (mugdhe’rddhasampattiḥ)—a transitional door where life force remains due to unexpired prārabdha karma. From a broader Vedāntic perspective, all anomalous mental conditions (hallucinations, intoxication, anesthesia) are subsumed either under external/internal perception (variants of waking and dream) or under non-perception (variants of deep sleep).
Conclusion: Beyond the Three States
The analysis of the three states (avasthā-traya-prakriyā) reveals a profound truth: the waker (viśva), the dreamer (taijasa), and the deep sleeper (prājña) are temporary roles or masks assumed by Consciousness. The waker is absent in dream, the dreamer is absent in deep sleep, and the deep sleeper is absent in waking—yet ‘I’ am present as the continuous, unchanging Witness throughout all three.
These three states come and go, taking on different names and forms, while borrowing their underlying existence from a single, non-dual Reality.
How do we discover that unshakeable Reality which underlies and transcends all three changing states? In our next post, we will explore the nature of turīya—the foundational, non-dual Consciousness that is our true, eternal Self.
For a comprehensive discussion on all related aspects, see ‘A-U-M: Awakening to Reality’.
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These definitions have been assembled by NotebookLM AI based entirely upon my own writing from published books, posts to Advaitin and this website. You can see a complete list of my books here. Note that the reader will find repetition in these definitions. This is intentional, as they are primarily directed at relatively new seekers and intended to function both as an ‘overview’ and as ‘revision’. Links to the other definitions have been added where appropriate.