In his article, A Ghost in the Machine, Ebon Muse discusses the superior parietal lobe. I’m not a neurobiologist and I don’t necessarily know anything about the brain, but Ebon Muse cites sources, and I have no reason to not believe what he says about what this part of the brain does.
Essentially, it’s the part of the brain that tells us where we are. It gives us a sense of location, which means it also gives us a sense of separateness, of being distinct from other things. When the superior parietal lobe’s functions are impaired or otherwise disabled, a person loses a sense of their own physical limits, i.e., where self ends and not-self begins. This can be accompanied by feelings of oneness with the universe or even religious and mystical experiences.
The more I think about this, the more it blows me away. Ebon Muse uses the function of the superior parietal lobe as evidence against mind-body dualism, but to me, this knowledge validates Maya.
Separateness is an illusion. In reality everything is the same as everything else- it’s all connected in one big system and the boundaries that we perceive are merely cognitive conveniences that enable us to simultaneously have consciousness and perform vital physical functions. The superior parietal lobe’s function is to produce a mental construct of physical (and mental/spiritual) distinctness. In other words, without the superior parietal lobe convincing us that we were separate individuals, we wouldn’t think we were. So the truth, before it’s chewed up by our brain and formed into a picture that we can comprehend, is that separateness is a myth. Everything is really the same.
Like I said, this is huge to me. I already believed in Maya, because it seemed like the most reasonable thing in the world when I read about it in books on Hinduism. I mean, we’re all made of the same basic atoms as everything else is, and the atoms that compose us don’t stay with us; they’ve not got our names written on them or anything. Our own bodies take in new matter and replace the old matter. If matter is really all just three different kinds of subatomic particles, how can I really say where “I” stop and “everything else” stops. Our mind tells us that we are finite and have borders, but our minds tell us lots of things that are not so.
Our very empirical experience of the world is not direct- it’s sensed indirectly by remote sensory organs, coded into nerve impulses which are sent to the brain, and then the brain sorts through it and composes a perceptive impression which it feeds to the consciousness. Along the way, mistakes get corrected, gaps get filled in, and all kinds of mental processes color and shade this sensory information. What I think I’m seeing is not necessarily the objects I think I’m seeing, or even the photons that bounce off them or the raw data that gets sent to the brain. It’s a processed mental construct. What we think we see is not necessarily what we see.
How is the sense of separateness different, particularly if it is only maintained by nervous activity in the superior parietal lobe? Without that, we would have no sense of independent existence, and to me that means that the sense of separateness is actually the artificial construct.
In other words, Maya is the product of our superior parietal lobe lying to the rest of the brain. It’s a functional, useful lie, to be sure, but it’s a lie. The real truth is that all is one, that everything is everything else, including you and me.