| | hi nikolai,
i notice the thing with the sensations moving up through the body too (cooling off as goes higher, and then disappearing/integrating into the sensations that imply space/background/mental phenomena before resulting in a cessation moment) ... but i also went through almost a decade of u ba khin/goenka style vipassana (with an almost-exclusive emphasis on bodily sensations and vibrations). i know path-winners who haven't/don't experience this stuff, so it may be the result of the style of training or model of practice and progress, or a personal orientation, or both.
a tip you may find handy as you are inclined to notice this: as it moves, pay attention not just to the most obvious aspects of it, but look around it (like around its edges) and see if you can spot subtler stuff happening at the same time. how does the quality of the sensation change? how does the upward progression through the centre of your body affect its surrounding areas, like the periphery/the surface of your body? is there a sense of interplay between the sensations that imply the core (where you feel the ball of energy, as you call it) and sensations of the periphery?
tarin |