How does OM chanting affect the brain, and how did this adoption allow for scientific breakthroughs surrounding OM chanting and vibration as a potential treatment for neurological and/or psychological disorders?

History of OM chanting prior to modern postural yoga (MPY) and its adoptionand appropriation by MPY.Questions: How does OM chanting affect the brain, and how did this adoptionallow for scientific breakthroughs surrounding OM chanting and vibration as apotential treatment for neurological and/or psychological disorders? Can OMchanting be used therapeutically for neurological and psychological conditions?Points;? History of OM and its use in MPY? Vocal vibration is necessary for “cleansing” cerebrospinal fluid. Mantrasare more vibratory than normal speech.? How modern medicine uses vibration for treatment and diagnosis,including brain ultrasound for administering drugs? fMRI study of OM? Individual experiences of OM chanting as a healing ritual.The attached document gives a good background.Additional materials;https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3099099/https://www.ncbi.nlm.nih.gov/pubmed/26891768https://marcjwolf.com/articles/sound-vibrations-the-brain-new-connections-paradigms/