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In Advaita Vedanta, deep dreamless sleep is considered the highest state of consciousness. If one can stay aware or conscious while in deepest dreamless sleep, a deep meditative state (known as "jagrat sushupti") is said to be achievable. This notion of paradoxical consciousness may be linked to high cortical activity which happens during the delta-sleep.
A 2004 study took eight long-term Tibetan Buddhist practitioners of meditation and, using electrodes, monitored the patterns of electrical activity produced by their brains as they meditated. The researchers compared the brain activity of the monks to a group of novice meditators (the study had these subjects meditate an hour a day for one week prior to empirical observation). In a normal meditative state, both groups were shown to have similar brain activity. However, when the monks were told to generate an objective feeling of compassion during meditation, their brain activity began to fire in a rhythmic, coherent manner, suggesting neuronal structures were firing in harmony. This was observed at a frequency of 25–40 Hz, the rhythm of gamma waves.These gamma-band oscillations in the monk’s brain signals were the largest seen in humans (apart from those in states such as seizures).
Delta wave – (0.1 – 3 Hz)
Theta wave – (4 – 7 Hz)
Alpha wave – (8 – 15 Hz)
Mu wave – (7.5 – 12.5 Hz)
SMR wave – (12.5 – 15.5 Hz)
Beta wave – (16 – 31 Hz)
Gamma wave – (32 – 100 Hz)
In Advaita Vedanta, deep dreamless sleep is considered the highest state of consciousness. If one can stay aware or conscious while in deepest dreamless sleep, a deep meditative state (known as "jagrat sushupti") is said to be achievable. This notion of paradoxical consciousness may be linked to high cortical activity which happens during the delta-sleep.
What does it all mean? It means that bliss comes only from inside ourselves and that it is most intense when we are free from thoughts and perceptions, which create the world and the body, that is, when we are in our pure being, which is Brahman, the Self. In other words, the being alone is bliss and the mental superimpositions are ignorance and, therefore, the cause of misery. That is why samadhi is also described as sushupti in jagrat [sleep in the waking state]; the blissful pure being which prevails in deep sleep is experienced in jagrat, when the mind and the senses are fully alert but inactive. (Guru Ramana, pp. 112-13)
"Jagrat Sushupti: The state of wakeful sleep, in which there are no thoughts but in which there is full awareness of the existence-consciousness 'I am'." - Mooji.org, Glossary
You're conscious of nothing sleeping. Aware of multiple (some yet to've existed) realities thinking. Gamma's the highest possible thinking state.
originally posted by: Klassified
Alpha, Theta, and/or Delta do not lower consciousness. They lower brainwaves.
Neither does Gamma raise consciousness. It raises brainwaves.
However, I would agree that what you focus on is key. Focusing on "nothingness" helps to quiet the incessant chatter of the mind. That's one of the reasons for going into deeper states of meditation. Focusing on love may very well aid in raising your brainwaves to gamma, if that is your goal, but it does not raise your consciousness, so to speak. Unless you have a different definition of consciousness than what I understand. Interesting OP. S&F.