1000. Long-term clinical study about the effect of meditation with a group of scientists & engineers around the world?

We have listed here some scientists & engineers and the devices they offer in their shops:

Trials & studies about which devices are most suitable to change or brains through training?

But does it make sence that these highly qualified persons test their low-level devices and test their effect in an fmri brain scanner? If you look at the reviews about these devices under www.petergamma.org it does not make much sense.

It does make more sense to do a clinical long-term studies with all of those as meditators. This is something which is missing since the paper in 2004 was published:

https://pubmed.ncbi.nlm.nih.gov/31004219/

And the devices these people offer in their shops are also tested how effective these are, but only at the second place. And they are eventually already been given up by those, and they try now to sell those to the hobbists, since they decided all for fmri brain scanners and nothing else for themselves.