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336 pages, Hardcover
Published February 22, 2022
…sensation is not simply a process of gathering information from the periphery and funnelling it to the brain, but that actually the brain can influence the data being captured. This is referred to as bottom-up and top-down processing, respectively. But this two-way flow of information is not limited to sensation, or even our senses; it is a feature of how every tenet of our nervous system works.--------------------------------------
…when we listen, what we hear is the result of the process of making sense of these pressure waves all around us, ascribing meaning to these tremblings of molecules. It is an early warning system, an awareness of what lies in wait immediately beyond our bodies or outside our field of vision. It is also an effective mode of communication. As the authors of the textbook Auditory Neuroscience state, ‘Every time you talk to someone, you are effectively engaging in something that can only be described as telepathic activity, as you are effectively “beaming your thoughts into the other person’s head,” using as your medium a form of “invisible vibrations”.’We tend to think of our senses as pure forms of data gathering. Physical sense encounters external stimuli and transfers that information directly to the brain, where the info is incorporated. Seems simple and direct, no? It might be were it actually the case. But it is most certainly NOT the case. We know for a fact that people believe whatever they want to believe, regardless of extant reality. January 6, 2021 and your crazy, Fox-addicted uncle offer prime examples of that. But it is also the case that believing is, literally, seeing, on a much more immediate, personal, sensate level, extending far beyond the willful ignorance of political (and reportorial) bubble-think.
‘My favourite Tube station was Tottenham Court Road, because there’s so many lovely words in there. “Tottenham” produced the taste and texture of a sausage; “Court” was like an egg – a fried egg but not a runny fried egg: a lovely crispy fried egg. And “Road” was toast. So there you’ve got a pre-made breakfast. But further along the Central Line was one of the worst ones, that used to taste like an aerosol can – you know, the aftertaste you get from hairspray. That was Bond Street.’It is the associations our sensate experiences have with our past, with our emotions with our thought processes, that give them value far beyond the immediate physical information they provide, whether one is a Proustian character recalling a large chunk of his past prompted by dipping a madeleine in a cup of tea, or one is a less literary sort, recalling a moment from early parenthood, prompted by the particular scents in the baby products section of a store.
not only is there an overlap between olfaction and emotion, but also olfaction and emotional memory. Those regions of the brain involved in olfaction and emotional processing also have a strong role in memory.Ranging beyond, Leschziner writes of a woman’s inability to construct internal visions, and of the phantom limb experience of many who have endured amputations. Our sense of ourselves in space gets a look as well, prompting you to wonder just what the criteria might be for defining what does and does not qualify a bodily experience to be called an actual sense.
‘Perception is nothing more than a controlled hallucination.’ This is a commonly used sentence in the world of cognitive neuroscience. Essentially, our brains work as guessing machines, interpreting what is coming in through our senses in the context of our model of the world. What we perceive relates to our existing beliefs about the world, to how what the information our senses provide us interacts with our virtual-reality simulation of the universe.Very much worth a look or a listen, maybe a touch, if you read braille, The Man Who Tasted Words is a treat for your brain, and your senses, however they work.
the brain is not simply an absorber of information. It is a prediction machine. Our perception of the world is based upon predictions of how we expect our world to be, a necessary shortcut to deal with those three flaws, of data capacity, inherent delay and ambiguity.
What we believe to be a precise representation of the world around us is nothing more than an illusion...Multiple examples are given from each sense showing how the brain is creating an approximation of reality.
I am filled with anger at these morons, those who are anti-vaxxers and anti-scientists...I wonder if Guy would be so cocksure today? https://hansard.parliament.uk/commons...