yajna

Meditation has also been proven scientifically to untangle and rewire the neurological pathways in the brain that make up the conditioned personality. Buddhist monks, for example, have had their brains scanned by scientists as they sat still in deep altered states of consciousness invoked by transcendental meditation and the scientists were amazed at what they beheld. The frontal lobes of the monks lit up as bright as the sun! They were in states of peace and happiness the scientists had never seen before. Meditation invokes that which is known in neuroscience as neuroplasticity; which is the loosening of the old nerve cells or hardwiring in the brain, to make space for the new to emerge. Meditation, in this sense, is a fire that burns away the old or conditioned self, in the Bhagavad Gita, this is known as the Yajna;__ll karma or effects of actions are completely burned away from the liberated being who, free from attachment, with his physical mind enveloped in wisdom (the higher self), performs the true spiritual fire rite.