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Read through the most famous quotes by topic #brain
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. ↗
The autopilot is a hands-free piece of electronic wizardry. It's not some brutal application of electricity like one of the Pubyok's car batteries...Think of its probing as a conversation with the mind, imagine it in a dance with identity. Yes, picture a pencil and eraser engaged in a beautiful dance across the page. The pencil's tip bursts with expression - squiggles, figures, words - filling the page, as the eraser measures, takes note, follows in the pencil's footsteps, leaving only blankness in its wake. The pencil's next seizure of scribbles is perhaps more intense and desperate, but shorter lived, and the eraser follows again. They continue in lockstep this way, the self and the state, coming closer to one another until finally the pencil and the eraser are almost one, moving in sympathy, the line disappearing even as it's laid down, the words unwritten before the letters are formed, and finally there is only white. ↗
Many „pathogens“ (both chemical and behavioral) can influence how you turn out; these include substance abuse by a mother during pregnancy, maternal stress, and low birth weight. As a child grows, neglect, physical abuse, and head injury can cause problems in mental development. Once the child is grown, substance abuse and exposure to a variety of toxins can damage the brain, modifying intelligence, aggression, and decision-making abilities. The major public health movement to remove lead-based paint grew out of an understanding that even low levels of lead can cause brain damage that makes children less inteligent and, in some cases, more impulsive and aggressive. How you turn out depends on where you´ve been. So when it comes to thinking about blameworthiness, the first difficulty to consider is that people do not choose their own developmental path. It´s problematic to imagine yourself in the shoes of a criminal and conclude, „Well, I wouldn´t have done that“ – because if you weren´t exposed to in utero cocaine, lead poisoning, or physical abuse, and he was, then you and he are not directly comparable. ↗
Our 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. ↗
#cognition #cybernetics #metaphor #neuroscience #inspirational
Now and then a pair of eyes would burn at us out of the dark ahead. I knew that they were the eyes of a cow–a poor dear stoic old cow with a cud, standing on the highway shoulder, for there wasn't any stock law–but her eyes burned at us out of the dark as though her skull were full of blazing molten metal like blood and we could see inside the skull into that bloody hot brightness in that moment when the reflection was right before we picked up her shape, which is so perfectly formed to be pelted with clods, and knew what she was and knew that inside that unlovely knotty head there wasn't anything but a handful of coldly coagulated gray mess in which something slow happened as we went by. We were something slow happening inside the cold brain of a cow. ↗
I consider that a man's brain originally is like a little empty attic, and you have to stock it with such furniture as you choose. A fool takes in all the lumber of every sort that he comes across, so that the knowledge which might be useful to him gets crowded out, or at best is jumbled up with a lot of other things, so that he has a difficulty in laying his hands upon it. Now the skillful workman is very careful indeed as to what he takes into his brain-attic. He will have nothing but the tools which may help him in doing his work, but of these he has a large assortment, and all in the most perfect order. It is a mistake to think that that little room has elastic walls and can distend to any extent. Depend upon it there comes a time when for every addition of knowledge you forget something that you knew before. It is of the highest importance, therefore, not to have useless facts elbowing out the useful ones. ↗
