No doubt the more strain on the prefrontal cortex the less it is able to execute the high order thinking which is required in chess. I think for similar reasons you see judges being much harsher giving sentences just before lunchtime, because tanking glucose levels deprives the PFC of the resources it needs to make decisions effectively. In a similar way being anxious or depressed means your brain, even at a subconscious level, is preoccupied with matters unrelated to chess and so can't devote its full attention to the task at hand. Primitive parts of the brain that deal with emotion can also in effect override the more rational, logical PFC.
Who needs human reasoning and cognitive thoughts when you’ve got algorithms to do all the thinking for you?
No doubt the more strain on the prefrontal cortex the less it is able to execute the high order thinking which is required in chess. I think for similar reasons you see judges being much harsher giving sentences just before lunchtime, because tanking glucose levels deprives the PFC of the resources it needs to make decisions effectively. In a similar way being anxious or depressed means your brain, even at a subconscious level, is preoccupied with matters unrelated to chess and so can't devote its full attention to the task at hand. Primitive parts of the brain that deal with emotion can also in effect override the more rational, logical PFC.
I play chess with the most primitive part of my brain.
The day of the Dinosaur is not yet over!