States of Mind: Jagrat, Swapna, Sushupti, and Levels of Consciousness

What happens to your mind when you fall asleep? Where does your waking ego vanish during dreamless rest, and who is observing your dreams?

While modern cognitive science began studying sleep architecture and electroencephalogram (EEG) brainwaves in the 20th century, the ancient Mandukya Upanishad mapped the complete spectrum of human consciousness into four profound states thousands of years ago.

1. The Four States of Consciousness (Avastha Chatushtaya)

2. Deep Analysis of the Four States

1. Jagrat Avastha (The Waking State)

• Experiencer Archetype: Termed Vaishvanara (the universal physical experiencer).
• Vehicle: Operates through the Gross Body (Sthula Sharira) and the five sensory organs.
• Cognitive Nature: Attention is directed outward. The individual is bound by physical physical laws: space, chronological time, gravity, and object permanence.
• Modern EEG Match: Characterized by Beta Waves (13–30 Hz) during alert focused concentration, and Alpha Waves (8–12 Hz) during relaxed wakefulness.

2. Swapna Avastha (The Dreaming State)

• Experiencer Archetype: Termed Taijasa (the luminous, subtle inner experiencer).
• Vehicle: The physical body and sense organs are paralyzed in sleep; consciousness operates exclusively within the Subtle Body (Sukshma Sharira).
• Cognitive Nature: The mind projects its own internal cosmos composed of latent subconscious memories, repressed wishes, and anxieties. In a dream, your mind creates both the dreamer and the entire city, tiger, or sky!
• Modern EEG Match: Corresponds directly to REM Sleep (Rapid Eye Movement) and Theta Waves (4–8 Hz).

3. Sushupti Avastha (The Deep Dreamless Sleep)

• Experiencer Archetype: Termed Prajna (the mass of undifferentiated consciousness).
• Vehicle: Both the gross body and subtle mind temporarily dissolve into the Causal Body (Karana Sharira).
• Cognitive Nature: There are no dreams, no wandering thoughts, no sensory desires, and no ego boundaries. Upon waking, everyone exclaims: “I slept so peacefully, I knew nothing!” This shows that an awareness of absence was present even when thoughts were asleep.
• Modern EEG Match: Corresponds to Stage 3/4 Slow-Wave Sleep (NREM) characterized by slow, high-amplitude Delta Waves (0.5–4 Hz).

4. Turiya (The Fourth State — Pure Consciousness)

• Nature: Turiya literally means “The Fourth”. In Indian psychology, it is not merely a fourth transitory state, but the underlying screen of pure consciousness on which waking, dreaming, and deep sleep appear and disappear.
• Attributes: Non-dual, serene, unconditioned (Shantam, Shivam, Advaitam).
• Attainment: Cultivated through sustained Samadhi in Raja Yoga and deep self-inquiry (Jnana Yoga).
• Modern Neuroscience Parallels: Synchronous high-frequency Gamma Waves (40+ Hz) observed in the brain scans of long-term Himalayan meditators (e.g., studies by Richard Davidson at the University of Wisconsin).

3. Indian Multidimensional Consciousness vs Western Freudian Model

4. Summary Table for Exam Revision