There is a recent finding that has been published that appears to suggest that mind is produced by the brain. I will link to the article at the bottle of this post. However, I think there is another explanation that is just as credible than assuming that the brain has a on and off switch for consciousness. That is that when you stimulate the brain and in this case it was the claustrum, that the brain blocks out consciousness, memories until the blocker's electrical stimuli is turned off then consciousness returns. In this view the on and off switch is just a metaphor. This finding then appears to be consistent with the view that the brain is a blocker/reducing value/receiver/filter of consciousness rather than the producer of consciousness.
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4 weeks ago