in my twenty minutes of meditation before yoga the other day, i had an interesting experience. so, i've taken numerous psychedelics and have some lasting, but enjoyable, visual effects especially when tired or smoking pot. so i smoked a high quality sativa and was in a very spiritual, motivated mood. i sat down to meditate and focused on breath. each and evry breath felt so good like it ran throughmy whole body. at first my eyes were closed, but i then realized that this was causing tension in my forehead and was distracting me so i opened them about half way. in front of me was the floor of my room, but a little different. while i saw a few pattern type/lsd visuals, the main feature was that the whole ground/atmosphere ( i can't really explain) seemed to be made of a liquidy substance that flow in waves of green/yellow and orange/red. its so hard to explain but it was like the world would fill up with green and then empty out, continuously flowing. it was beautiful and seemed quite metaphorical, but could also be distracting. so i would focus again on my breathing, and once able to clear the head it was as if i would flow with these colors. then, the thing that broke my concentration was a very strange sensation in my temple. all of the sudden i felt pressure in my right temple. instead of ignoring it or thinking about it, i focused my attention directly on it to experience it fully and let it pass. but, it got more and more intense. this is another experience i've had on pscyhedelics with bodily pressure. eventually it got so intense that i stopped and got up, which of course brouht an end to the visual and physical experiences. i'm wondering, is this a certain level people have reached in meditation? is the physical head thing one of the symptoms of ego loss described in the bardo thodol? or is this just an interesting variation becaouse of the pot? whatever it was it was enjoyable and quite spiritual, i truly was able, for some moments, to be completely here and now with the experience, and it definitely cleared up my head where i could make decisions more freely. but i can't get over how similar it was to tripping. i've always heard that lsd and meditiation are very different experiences that can lead up to the same goal (samadhi, ego loss etc.).