An university courses about this, along with drugs, coma, burst of anger and various other 'non-standard states of mind' (sorry it in french but with a google translate you should be able to get researcher names and read some of their papers) :
"Trance" and meditation are for practicals reason the main focus and the main goal is to allow to use 'meditation induced trance' (as far as I know it's the same thing than mindfulness meditation) to allow people to handle things like stuttering for exemple. They do teach students to put themselves in trance.
For what I heard, it's still a very fresh field but 'there are studies about it'.
https://fc.univ-paris8.fr/-etude-des-transes-et-des-etats-de...
"Trance" and meditation are for practicals reason the main focus and the main goal is to allow to use 'meditation induced trance' (as far as I know it's the same thing than mindfulness meditation) to allow people to handle things like stuttering for exemple. They do teach students to put themselves in trance.
For what I heard, it's still a very fresh field but 'there are studies about it'.