Thanks for the answers. Surely “extinguishment by not grasping” is my lead also, but I found that if you haven’t developed meditation object and awareness deeply, when people try to “not grasp anything” they just get distracted, sloth & torpor arise and eventually they even fall asleep in meditation.
But I find such way of meditation actually best of all.
Anyway for my students path needs to be developed step by step, and I find awareness of energetic objects to be very good for that.
@Mat: What I hope to achieve is nibbana and along the way to learn as much as possible, so I can share this path with others, knowing possible troubles and help with them. I keep Four Noble Truths deeply in my heart and Mara is not going to fool me, I am very dedicated to the path. I am not craving towards these objects or experiences in themselves, I just find them as very good tools to practice meditation and I believe they are vehicles to deeper states.
My intention was to 1. get some encouragment from people more experienced than me that I am on right track. And if someone has gone similar path and had bad results then I hope for a warning.
And I wanted to discuss how to label experiences I described in terms that are used in Pali canon. Since they are clearly meditative experiences, perhaps there are right names for them. I study Buddhism for years and I find it a little confusing that suttas tell little about pre-nimitta, pre-jhanic stages of meditation, while they are actually very rich in possible experiences and have a lot of stages.
For example what Thanissaro describes as four material jhanas (light jhanas) are actually 4 stages of pre-nimitta stage according to Ajahn Brahm standards (deep/heavy jhanas).
Still, Thanissaro mentions only tactile sensations and perhaps seeing. He doesn’t mention hearing. Only Ajahn Amaro and Ajahn Sumedho refer to that, but they don’t say if it is piti, or what… just new terminology taken from outside traditions (nada yoga).