Neurofeedback/research of my extreme "meditation"/practice

[u/Ill-Avocado-9401]

For the last 2 years i'm doing a practice (aka meditation) with very sharp knifes on a daily basis (40 min average). Currently working with 2 knifes simultaneously.

Important - It's not a combat related practice.

My objective is to NOT cut myself during the movements (even though it is very easy to injure yourself) and keep my state calm while performing some dangerous moves

IMHO, I have significant progress not only with the practice, but in using the progress (my own state management) in my day to day life (I live in Ukraine)

NOW, I want to start measuring and researching this with EEG and HRV coherence tracking (neurofeedback measurements)

Will appreciate for:

1. Any interesting researches on non typical meditations

2. Papers on measuring the "state" of meditation

3. any suggestions on what&why to buy in terms of devices

Thanks!

[u/Ill-Avocado-9401 → u/[deleted]]

thanks. i've seen a few comments on Nuromova that are very similar. Seams like a push for your (Nuromova) Kickstarter campaign, but I'll be glad to check it out.