The sphenoid bone and the occipital bone are bowl supporting the brain. It is said that they move rhythmically by respiration. You can see motions animated of sphenoid bone with occipital bone from the attached.
Craniosacral movement animated
Therefore its microscopic instability might have a huge effect on the whole body system like the butterfly effect. Why?
Fascia of deep front line, reference
This is because the fascia is connected from head to toe like a net. This perspective becomes the theoretical basis for correcting the imbalance of the body by stimulating the ears. Ears can be one of the effective places to control the harmonious movement of the bone of sphenoid and the occipital because the ear and the sphenoid bone are closely connected.