For Self-Harmonization ... visualize this Yantra at the Seventh Chakra or at the First Chakra (or both) and ask your Inner Self or Father/Mother God ... "To engage the corresponding energy into motion". Hold the visualization and wait a few minutes.
On A Physical Level ... this Yantra corresponds to the pineal gland, the brain, neurons, thalamus, rachidian bulb, spinal cord, skull, medulla oblongata ... it is also related to the First Yantra and First Chakra.
