That looks just like a variation of a chakra visualization?
Hi Amor it is wonderful to have you and your inputs. Yes there were also variations that Paramahansa Yogananda (and other great Master's) gave to us. Another one is to say just om at every center; the coccyx being at the base of the spine, the sacral about two inches up, the lumbar behind the naval, the dorsal at the heart the cervical between the upper shoulder blades, the medulla where the neck curves inward near the base of the skull, in the back of the neck and the third eye just above the tip of the top of the nose.
These are chakra clearing as well. The point is to get beyond outer sensations and experience inner perceptions. We must also consider the higher techniques of meditation which take us into the astral spine and out of the outer temporal world into the dimensions of the souls perceptions.
Jitendra