OM is the [[M#Mantra|mantra]], the expressive sound-symbol of the Brahman Consciousness in its four domains from the ''Turiya'' to the external or material plane.
The mantra Om should lead towards the opening of the consciousness to the sight and feeling of the One Consciousness in all material things, in the inner being and in the supraphysical worlds, in the causal plane above now superconscient to us and, finally, the supreme liberated transcendence above all cosmic existence. <ref>http://incarnateword.in/cwsa/29/mantra-and-japa#p10</ref>
OM if rightly used (not mechanically) might very well help the opening upwards and outwards (cosmic consciousness) as well as the descent. <ref>http://incarnateword.in/cwsa/29/mantra-and-japa#p11</ref>