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The difference between mind and brain is that brain deals only with memorized, subjective, special-case experiences and objective experiments, while mind extracts and employs the generalized principles and integrates and interrelates their effective employment. Brain deals exclusively with the physical, and mind exclusively with the metaphysical.

 

Buckminster Fuller

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As a brain researcher, I'd started out simply accepting the strictly objective principles of the behaviorist position. In the 1950s and early 1960s, all respectable neuroscientists thought in these terms. In those days, we wouldn't have been caught dead implying that consciousness or subjective experience can affect physical brain processing.
My first break with this thinking — although I certainly didn't see it that way at the time — came in a 1952 discussion of mind-brain theory in which I proposed a fundamentally new way of looking at consciousness. In it, I suggested that when we focus consciously on an object — and create a mental image for example — it's not because the brain pattern is a copy or neural representation of the perceived object, but because the brain experiences a special kind of interaction with that object, preparing the brain to deal with it.
I maintained that an identical feeling or thought on two separate occasions did not necessarily involve the identical nerve cells each time. Instead, it is the operational impact of the neural activity pattern as a whole that counts, and this depends on context — just as the word "lead" can mean different things, depending on the rest of the sentence.

 

Roger Wolcott Sperry

 

The relation between psyche and soma, mind and brain, are peculiarly intimate; but, as in marriage, the partners are not inseparable: indeed their divorce was one of the conditions for the mind's independent history and its cumulative achievements.
But the human mind possesses a special advantage over the brain: for once it has created impressive symbols and has stored significant memories, it can transfer its characteristic activities to materials like to stone and paper that outlast the original brain's brief life-span. When the organism dies, the brain dies, too, with all its lifetime accumulations. But the mind reproduces itself by transmitting its symbols to other intermediaries, human and mechanical, than the particular brain that first assembled them.

 

Lewis Mumford

 

It is the integrity of each individual human that is in final examination. On personal integrity hangs humanity's fate. You can decieve others, you can decieve your brain-self, but you can't decieve your mind-self — for mind deals only in the discovery of truth and the interrelationship of all truths. The cosmic laws with which mind deals are noncorruptible. Cosmic evolution is omniscient God comprehensively articulate.

 

Buckminster Fuller

 

I have never been entirely satisfied with the materialistic or behavioristic thesis that a complete explanation of brain function is possible in purely objective terms with no reference whatever to subjective experience; i.e., that in scientific analysis we can confidently and advantageously disregard the subjective properties of the brain process. I do not mean we should abandon the objective approach or repeat the errors of the earlier introspective era. It is just that I find it difficult to believe that the sensations and other subjective experiences per se serve no function, have no operational value and no place in our working models of the brain.

 

Roger Wolcott Sperry

 

We evolute toward ever lesser brain comprehension lags — ergo, toward ever diminishing error; ergo, ever diminishing misunderstandings; ergo, ever diminishing fear, and its brain-lagging painful errors of objectivity; wherefore we approach eternal instantaneity of absolute and total comprehension. The eternal instantaneity of no lag at all. However, we have now learned from our generalizations of the great complexity of the interactions of principles as we are disembarrassed of our local, exclusively physical chemistry of information-sensing devices — that what is approached is eternal and instant awareness of absolute reality of all that ever existed. All the great metaphysical integrity of all the individuals, which is potential and inherent in the complex interactions of generalized principles, will always and only coexist eternally.

 

Buckminster Fuller