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Before going into a consideration of Deep Sleep, once again a small detour.

Dennis raised in an e-mail the question of Sleepwalking. Where would it fit in the Model?

Some people amble around in sleep and even hurt themselves.  A few persons could commit heinous crimes in the state of somnambulism.  A well-known case is that of Kenneth Park in 1987 when he strangulated his father-in-law and killed his mother-in-law. However, he was let out by the court on the ground that he was sleepwalking when he harmed and killed people.  A similar case of acquittal also occurred in 1846. Apparently the body of the sleepwalkers is active but the mind seems to be asleep.

Neuroscientifically speaking, in the case of sleepwalking, the motor cortex of the brain is functional whereas the frontal lobe vested with executive functions is at rest. This means that a part of the mind (that propels the body to act) is active while the part responsible for reasoning and self-control is asleep. Continue reading


Recently there was an interesting question about the disappearance of ‘me’ when a patient is administered anesthesia in preparation for a major surgery.  It is quite intriguing where the missing ‘self’ has gone and when under anesthesia (Q. 313).

Peter, Sitara and Dennis answered the question very ably explaining the Vedantic philosophy behind the various states of consciousness (as we usually understand the term).  The false concept of the sense of a separate ‘self’ we think we possess and the reality of an eternal Self; the misunderstanding that arises if we take the word Consciousness to mean the same in psychology (& medicine) and Advaita;  the possible existence of multiple ‘minds’ which derive their illumination from an unchanging, everlasting, self-effulgent One Brahman were dealt with by them. Hardly can anything be added to their clear exposition made from the stance of Non-duality beyond saying a word of our appreciation and gratefulness to them.

I would like to use this opportunity, if I may, to bring to the notice of a wider audience an approach I developed in 2004 relating the state of our alertness to our body-mind system in order to understand who we really are. We shall also in the process examine what are Deep Sleep and Death and what is the condition of the brain under different states, including awake, dream, deep sleep, death, coma, anesthesia etc.

Let me call this as “A Model for Nirvana.”

Four Outcomes

Four Outcomes


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