Wonderful article! And you are very correct that this is the big problem in a lot of modern meditation studies. The methodology of the meditation technique makes a huge difference. They are not all “apples to apples.” If you haven’t read it already, Altered States, Daniel Goleman and Richard Davison is a fantastic book. You might also like this little piece I wrote: https://medium.com/@erikaburkhalter/a-boy-and-his-buffalo-dc6b3ab44650