Does science have any data concerning "jhanas" or "bliss states that emerge from single-pointed meditation?

Science HAS shown that frequent insight meditation does thicken the neocortex with glail cells, enhance memory, happiness, lower blood pressure, and conceptual skills. Has there been any findings from the so-called bliss states? Their attributes are described as being aware only as the "knower", the "doer" is quieted, and extreme bliss and joy. The state is also accompanied by super-concentration when emerging from the state (usually more then an hour after entering it) and a diminished feeling of bliss that lasts for hours. I would love to see some fMRI data on this...

Answer:
A friend told me recently about alpha, beta & theta waves.

Meditators have a somehow better combination of these and are thereby more relaxed, etc.

There's something another friend told me about interhemisphere 'switching' occurring at a different rate in meditators to controls.

This also somehow makes them better adapted.

Sorry am a bit vague. This is not my field, and was not that interested when they were telling me. :-)

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