Jaynes's explanation is that the non-dominant hemisphere hears the hypnotist's voice and decides to obey (usually because the person believes that this is how hypnosis really works, hence the cultural dependence), overruling the dominant hemisphere.
This theory seems the prediction that you shouldn't get a similar hypnotic effect if the sound get's processed by the left and by the right ear. How strongly do you believe that?
Some evidence: In ancient Egypt seeing hallucinations of other people was perfectly normal; the hallucinations were called "ka".
Plenty of people I know have internal family systems type hallucinations that speak to them. Given different cultural norms they likely also coud be called "ka" or do you have an argument for why what the Egyptian hallucinate was something different or why you think that their society had more people having those hallucinations?
Furthermore internal family systems voices often have a clear direction from which they are coming. When some come from the right and others of the same person come from the left, why should we believe that they come from the "non-dominate hemisphere" (which probably is either left or right).
If Jaynes's theory is true, it could have been a historical tool to turn off the bicameral (hallucinatory, pattern-matching) thinking, and turn on the consciousness. In other words, if you are a modern human interested in Buddhism, studying koans is probably just a waste of time: the abilities they promise you already have
I don't think you get to the purpose of koans. Koans often point to phenonomogical primitives that the student doesn't has access to and provide a tool to learn the new primitives.
This theory seems the prediction that you shouldn't get a similar hypnotic effect if the sound get's processed by the left and by the right ear. How strongly do you believe that?
I don't know how the sound is processed in brain. For example in vision, each hemisphere gets half of input from each eye. So "which eye" doesn't matter, but "left or right from where you are looking at" does.
...When some (voices) come from the right and others of the same person come from the left, why should we believe that they come from the "non-domin
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