I once read that if the folds in the cerebral cortex were smoothed out it would cover a card table. That seemed quite unbelievable but it did make me wonder just how big the cortex would be if you ironed it out. I thought it might just about cover a family-sized pizza: not bad, but no card-table. I was astonished to realize that nobody seems to know the answer. A quick search yielded the following estimates for the smoothed out dimensions of the cerebral cortex of the human brain.
An article in Bioscience in November 1987 by Julie Ann Miller claimed the cortex was a "quarter-metre square." That is napkin-sized, about ten inches by ten inches. Scientific American magazine in September 1992 upped the ante considerably with an estimated of 1 1/2 square metres; thats a square of brain forty inches on each side, getting close to the card-table estimate. A psychologist at the University of Toronto figured it would cover the floor of his living room (I haven't seen his living room), but the prize winning estimate so far is from the British magazine New Scientist's poster of the brain published in 1993 which claimed that the cerebral cortex, if flattened out, would cover a tennis court. How can there be such disagreement? How can so many experts not know how big the cortex is? I don't know, but I'm on the hunt for an expert who will say the cortex, when fully spread out, will cover a football field. A Canadian football field.
Biology gives you a brain. Life turns it into a mind.
Jeffrey EugenidesOur metaphors for the operation of the brain are frequently drawn from the production line. We think of the brain as a glorified sausage machine, taking in information from the senses, processing it and regurgitating it in a different form, as thoughts or actions. The digital computer reinforces this idea because it is quite explicitly a machine that does to information what a sausage machine does to pork. Indeed, the brain was the original inspiration and metaphor for the development of the digital computer, and early computers were often described as 'giant brains'. Unfortunately, neuroscientists have sometimes turned this analogy on its head, and based their models of brain function on the workings of the digital computer (for example by assuming that memory is separate and distinct from processing, as it is in a computer). This makes the whole metaphor dangerously self-reinforcing.
Steve GrandTag: cybernetics metaphor brain cognition neuroscience
If I could put my brain in her body, the world would be mine for the taking.
Susan Elizabeth PhillipsTag: power brain body powerful
A man should keep his little brain attic stocked with all the furniture that he is likely to use, and the rest he can put away in the lumber room of his library, where he can get it if he wants it.
Arthur Conan DoyleThis is my simple religion. There is no need for temples; no need for complicated philosophy. Our own brain, our own heart is our temple; the philosophy is kindness.
Dalai Lama XIVTag: life inspirational kindness morality simple ethics philosophy brain temple
Heresy is the eternal dawn, the morning star, the glittering herald of the day. Heresy is the last and best thought. It is the perpetual New World, the unknown sea, toward which the brave all sail. It is the eternal horizon of progress.
Heresy extends the hospitalities of the brain to a new thought.
Heresy is a cradle; orthodoxy, a coffin.
Tag: progress thought brave brain heresy orthodoxy cradle coffin horizon new-world
... we have created a man with not one brain but two. ... This new brain is intended to control the biological brain. ... The patient's biological brain is the peripheral terminal -- the only peripheral terminal -- for the new computer. ... And therefore the patient's biological brain, indeed his whole body, has become a terminal for the new computer. We have created a man who is one single, large, complex computer terminal. The patient is a read-out device for the new computer, and is helpless to control the readout as a TV screen is helpless to control the information presented on it.
Michael CrichtonTag: computers science-fiction brain
If the human brain were so simple that we could understand it, we would be so simple that we couldn’t.
Emerson M. PughTag: human brain comprehension understand
As long as our brain is a mystery, the universe, the reflection of the structure of the brain will also be a mystery.
Santiago Ramón y CajalTag: brain
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