Screening studies about meditation with Muse headbands, brain scanners, faces & scientific papers?

For instance like this. Which one is better:

Diego Hangartner:

or

Yangsi:

And then you cen select your favorite teacher in your center?:

But is all of this not very unsatisfying for really serious scientists? Peter Gamma from www.petergamma.org prefers to find his information here:

https://infozentrum.ethz.ch