TPF : Bicameral Mind

[Gnomon]

Historical Evidence for the Existence of the Bicameral Mind in Ancient Sumer
https://thephilosophyforum.com/discussi ... ient-sumer

invention of "consciousness" — Gus Lamarch

When I fist heard of Jayne's hypothesis, I thought the notion of a bicameral brain -- to explain the emergence of human-type consciousness -- was a good literary or historical metaphor, if not a scientific thesis, based on hard evidence. Unfortunately, it seems that neuroscience has not taken it very seriously. That may be because their emphasis is on the physical substrate of the mind (neurons), rather than the spiritual Cartesian res cogitans. As you said, "the mind is a nonphysical — and therefore, non-spatial — substance". If so, it might not be limited to physical spatial boundaries. Which sounds spooky to pragmatic scientists, because it might also be able to transcend the individual's brain & body. However, I assume that the conscious & subconscious Mind is not a ghostly Spirit, but merely a brain Function : Mind is a name for what the brain does -- thinking, feeling, etc.

Freud may have intuitively referred to the bicameral nature of the mind in his metaphors of Id, Ego, and Superego. In that case, the "Super-ego" might refer to the role of the dominant "conscious" chamber of the brain. But, I still doubt that General Consciousness is limited to one hemisphere. The creative-emotional "language" of the right brain seems to be a non-verbal form of conscious awareness. But only the left brain can make itself known to other minds via language. Lacking the words to express its visions and urges, schizophrenics may appear to be motivated by external demons, rather than conflicting inner emotions or drives.

Some scientists think consciousness is directly related to language. Hence, dependent on the typically “dominant”, “rational” and verbal left-brain. But that could be due to their bias toward rational thinking, and distrust of irrational motives. But both "fast" Right Brain & "slow" Left Brain modes of thinking are normal for humans. However sub-conscious thoughts & feelings are mostly concerned with emotional functions. In that case, the commanding "voices" & visions might be merely non-verbal automatic reflex urges & feelings (i.e. "Fast" thinking).

Split-brain experiments seem to result in two minds in one body, But that's difficult to parse into an understandable model of general consciousness, which might explain how the "bicameral mind" could present a consistent singular personality . It's possible that a study of close relations to humans, e.g. chimpanzees & bonobos, could shed some light on Jayne's notion of "pre-conscious" humans. If they are driven only by inner emotional urges, chimps might be equivalent to philosophical zombies, or robots. Their inner drives would not be experienced consciously, but more like encoded instructions, blindly converted into explainable actions. Has anyone done such a study, with a view toward a bicameral explanation? :chin:

Fast vs Slow Thinking : "System 1" is fast, instinctive and emotional; "System 2" is slower, more deliberative, and more logical.
https://en.wikipedia.org/wiki/Thinking,_Fast_and_Slow

Right Brain, Left Brain : A Misnomer : A More Holistic Picture
https://dana.org/article/right-brain-left-brain-really/

[Gnomon]

Some scientists think consciousness is directly related to language. Hence, dependent on the typically “dominant”, “rational” and verbal left-brain. — Gnomon
Also worth knowing about Iain McGilchrist — Wayfarer

The title Master & Emissary reminded me of Jonathan Haidt's interesting metaphor of the relationship between Conscious & Subconscious mind as the Mahout (rider) and his Elephant. That may not be what McGilchrist is referring to though.

Opinions on the book were polarized. Some reviewers focused on the poor quality of an $85 book, while others praised its focus on the whole brain, and others complained about its technical denseness and "verbal diarrhea", plus one described it as "for masochists only". Is it really that off-putting for those who don't buy his holistic view?

Jayne's notion of the "invention" of consciousness placed its emergence around the time of written language. But presumably un-written verbal language evolved long before written symbols began to replace or supplement untold millennia of communication via vocalizations along with hand & body gestures, as in chimps. Surely, some form of self-other consciousness accompanied those early forms of communication of inner concepts & feelings. Perhaps what coincided with complex social communities and written language was a more modern conception of self-consciousness and individualism.


Elephant & Rider :
https://www.jch.com/jch/notes/TheElepha ... aphor.html