Harvard Researchers say they have found the Source of Human Consciousness. Interesting how this backs up speculative realist notions, in that they discovered the source of consciousness when it was broken, damaged or destroyed:
Those subjects who were unconscious showed damage to a small area of the brainstem known as the rostral dorsolateral pontine tegmentum. “When it is damaged, almost every patient became comatose,” Fox said. Only one of the 24 conscious patients did not see damage to this area of the brainstem. Due to this, researchers established that the tiny region plays a vital role in consciousness. Next, the neuroscientists turned to a map of the human connectome to investigate the connections between regions. They found two areas in the cortex connected to this part of the brainstem. That led them to believe that these three regions make up a neural network from which, consciousness derives.
Where exactly these connections terminate in the cortex is not yet known. One ends at a part called the left, ventral, anterior insula (AI). The other concludes in the pregenual anterior cingulate cortex (pACC). Both areas are associated with awareness. But this is the first time they have been implicated in a neural network, never mind one which creates and maintains consciousness. In a follow-up segment, researchers examined the brains of 45 patients in a coma or vegetative state with an fMRI. They found in all the patients that these three regions were out of commission.