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Archive

Mar
19th
Mon
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“What if we’re not, in fact, meant to have language and music? (…) The reason we have such a head for language and music is not that we evolved for them, but, rather, that language and music evolved—culturally evolved over millennia—for us. Our brains aren’t shaped for these pinnacles of humankind. (…) These pinnacles of humankind are shaped to be good for our brains. (…)

They’d have to possess the auditory structure of…nature. That is, we have auditory systems which have evolved to be brilliantly capable at processing the sounds from nature, and language and music would need to mimic those sorts of sounds in order to harness—to “nature-harness,” as I call it—our brain. (…) Human speech sounds like solid objects events, and music sounds like human behavior. (…)

Being human today is quite a different thing than being the original Homo sapiens. (…) Unlike Homo sapiens, we’re grown in a radically different petri dish. Our habitat is filled with cultural artifacts—the two heavyweights being language and music—designed to harness our brains’ ancient capabilities and transform them into new ones.

Humans are more than Homo sapiens. Humans are Homo sapiens who have been nature-harnessed into an altogether novel creature, one designed in part via natural selection, but also in part via cultural evolution.”
Mar
8th
Thu
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“You could double the number of synaptic connections in a very simple neurocircuit as a result of experience and learning. The reason for that was that long-term memory alters the expression of genes in nerve cells, which is the cause of the growth of new synaptic connections. When you see that at the cellular level, you realize that the brain can change because of experience. It gives you a different feeling about how nature and nurture interact. They are not separate processes.”
Eric R. Kandel, American neuropsychiatrist, Nobel Prize laureate, A Quest to Understand How Memory Works, NYT, March 5, 2012
Mar
1st
Thu
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What are memories made of?

“Our memories are not inert packets of data and they don’t remain constant. Even though every memory feels like an honest representation, that sense of authenticity is the biggest lie of all. (…)

“The brain isn’t interested in having a perfect set of memories about the past,” “Instead, memory comes with a natural updating mechanism, which is how we make sure that the information taking up valuable space inside our head is still useful. That might make our memories less accurate, but it probably also makes them more relevant to the future.” (…)

The memory is less like a movie, a permanent emulsion of chemicals on celluloid, and more like a play—subtly different each time it’s performed. In my brain, a network of cells is constantly being reconsolidated, rewritten, remade. (…)

Reconsolidation provides a mechanistic explanation for these errors. (…) Why every memoir should be classified as fiction, and why it’s so disturbingly easy to implant false recollections. (…) The larger lesson is that because our memories are formed by the act of remembering them, controlling the conditions under which they are recalled can actually change their content. (…)

Being able to control memory doesn’t simply give us admin access to our brains. It gives us the power to shape nearly every aspect of our lives. There’s something terrifying about this. Long ago, humans accepted the uncontrollable nature of memory; we can’t choose what to remember or forget. But now it appears that we’ll soon gain the ability to alter our sense of the past. (…)

The fact is we already tweak our memories—we just do it badly. Reconsolidation constantly alters our recollections, as we rehearse nostalgias and suppress pain. We repeat stories until they’re stale, rewrite history in favor of the winners, and tamp down our sorrows with whiskey. “Once people realize how memory actually works, a lot of these beliefs that memory shouldn’t be changed will seem a little ridiculous,” Nader says. “Anything can change memory. This technology isn’t new. It’s just a better version of an existing biological process.”
Jonah Lehrer, American author and journalist, in ☞ What are memories made of?, Wired Magazine, Feb 17, 2012
Jan
15th
Sun
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Memories are not static entities; over time they shift and migrate between different territories of the brain. (…)

Where memories might be stored. (…) The answer lies in the multitude of tiny modifiable connections between neuronal cells, the information-processing units of the brain. These cells, with their wispy tree-like protrusions, hang like stars in miniature galaxies and pulse with electrical charge.

Thus, your memories are patterns inscribed in the connections between the millions of neurons in your brain. Each memory has its unique pattern of activity, logged in the vast cellular network every time a memory is formed. It is thought that during recall of past events the original activity pattern in the hippocampus is re-established via a process that is known as “pattern completion”. (…) The physical structure of your brain is malleable.”
Hugo Spiers is a neuroscientist and lecturer at the institute of behavioural neuroscience at University College London, What are memories made of?, The Guardian, Jan 14, 2012.
Jan
10th
Tue
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Metaphor is a fundamental mechanism of mind, one that allows us to use what we know about our physical and social experience to provide understanding of countless other subjects. Because such metaphors structure our most basic understandings of our experience, they are “metaphors we live by”—metaphors that can shape our perceptions and actions without our ever noticing them. (…)

We are neural beings, (…) our brains take their input from the rest of our bodies. What our bodies are like and how they function in the world thus structures the very concepts we can use to think. We cannot think just anything – only what our embodied brains permit. (…)

The mind is inherently embodied. Thought is mostly unconscious. Abstract concepts are largely metaphorical.”
George Lakoff, American cognitive linguist and professor of linguistics at the University of California, Berkeley, cited in Daniel Lende, Brainy Trees, Metaphorical Forests: On Neuroscience, Embodiment, and Architecture, Neuroanthropology, Jan 10, 2012. See also: ☞ George Lakoff on metaphors, explanatory journalism and the ‘Real Rationality’
Jan
4th
Wed
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Memes are astral genes, information clusters without bodies that love to replicate themselves by hopping from brain to brain. They spread through gene-pools like waves through a sea. Replicate these memes to activate your future possibilities. Immortality and ecstasy come through nanotechnology. Biological fusion, psychopharmacology, and high technology merge on the level of electro-neurophysiology. In order to fabricate the reality of your choice, learn how to fly your brain/plane. The higher you fly, the farther you see. Get a grip on your neurons. Ride your brain like a wild wooly bronco-taming rodeo star.”
David Jay Brown, American writer and scientific researcher, Brainchild, New Falcon Publications, 1988, cited in Epilogue from Brainchild, Tribe, Aug 26, 2004
Jan
2nd
Mon
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“Internal mental experience is not the product of a photographic process. Internal reality is in fact constructed by the brain as it interacts with the environment in the present, in the context of its past experiences and expectancies of the future. At the level of perceptual categorizations, we have reached a land of mental representations quite distant from the layers of the world just inches away from their place inside the skull. This is the reason why each of us experiences a unique way of minding the world.”
Daniel J. Siegel, completed his medical degree from Harvard Medical School and his post-graduate medical education at UCLA, The Mindful Brain: Reflection and Attunement in the Cultivation of Well-Being, W. W. Norton & Company, 2007, p. 166-167.
Dec
30th
Fri
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“Mindfulness has never met a cognition it didn’t like.”
Daniel J. Siegel, completed his medical degree from Harvard Medical School and his post-graduate medical education at UCLA, The Mindful Brain: Reflection and Attunement in the Cultivation of Well-Being, W. W. Norton & Company, 2007
Dec
27th
Tue
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“We dissect nature along lines laid down by our native languages. The categories and types that we isolate from the world of phenomena we do not find there because they stare the observer in the face; on the contrary, the world is presented in a kaleidoscopic flux of impressions which has to be organized by our minds-and this means largely by the linguistic systems of our minds.”
Nov
19th
Sat
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“It is not the amount of knowledge that makes a brain. It is not even the distribution of knowledge. It is the interconnectedness.”
James Gleick, author, journalist, and biographer, whose books explore the cultural ramifications of science and technology, The Information: A History, A Theory, A Flood, Pantheon, 2011.
Nov
16th
Wed
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“The same statistical errors – namely, ignoring the “difference in differences” – are appearing throughout the most prestigious journals in neuroscience.”
Ben Goldacre, British science writer, doctor and psychiatrist, The statistical error that just keeps on coming, The Guardian, Sept 9, 2011
Nov
7th
Mon
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“This flexibility of learning accounts for a large part of what we consider human intelligence. While many animals are properly called intelligent, humans distinguish themselves in that they are so flexibly intelligent, fashioning their neural circuits to match the task at hand.”
David Eagleman, neuroscientist at Baylor College of Medicine, Your Brain Knows a Lot More Than You Realize, DISCOVER Magazine, Oct 27, 2011.
See also: ☞ David Eagleman on the conscious mind
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“Maybe we should be open-minded about the obverse possibility – that we hit the buffers because our brains don’t have enough conceptual grasp. (…) Einstein averred that “The most incomprehensible thing about the universe is that it is comprehensible. He was right to be astonished. Our minds, evolved to cope with the life of our remote ancestors on the African savannah. It’s amazing these minds can comprehend so much of the counterintuitive microworld of atoms, and phenomena billions of lightyears away. (…)

To survive this century, we’ll need the idealistic and effective efforts of natural scientists, environmentalists, social scientists and humanists. They must be guided by the best evidence, but inspired by values from beyond the limits of science.”
Lord Rees, British cosmologist and astrophysicist, former President of the Royal Society, Lord Rees explores ‘limits of science’ in Romanes Lecture, University of Oxford, Nov 3, 2011. See also: ☞ video of full lecture (transcript (pdf)).
Nov
6th
Sun
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Consciousness: The Black Hole of Neuroscience

“The simplest description of a black hole is a region of space-time from which no light is reflected and nothing escapes. The simplest description of consciousness is a mind that absorbs many things and attends to a few of them. Neither of these concepts can be captured quantitatively. Together they suggest the appealing possibility that endlessness surrounds us and infinity is within.”
— Megan Erickson, Consciousness: The Black Hole of Neuroscience, Big Think, Nov 6, 2011.
Oct
25th
Tue
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Iain McGilchrist on how the ‘divided brain’ has profoundly altered human behaviour, culture and society

“The left hemisphere is detail-oriented, prefers mechanisms to living things, and is inclined to self-interest. It misunderstands whatever is not explicit, lacks empathy and is unreasonably certain of itself, whereas the right hemisphere has greater breadth, flexibility and generosity, but lacks certainty.

It is vital that the two hemispheres work together, but McGilchrist argues that the left hemisphere is increasingly taking precedence in the modern world, resulting in a society where a rigid and bureaucratic obsession with structure and self-interest hold sway. (…)

Whatever the relationship between consciousness and the brain – unless the brain plays no role in bringing the world as we experience it into being, a position that must have few adherents – its structure has to be significant. It might even give us clues to understanding the structure of the world it mediates, the world we know. (…)

The structure and experience of our mental world. In this sense the brain is – in fact it has to be – a metaphor of the world. (…)

I believe that there are two fundamentally opposed realities rooted in the bihemispheric structure of the brain. But the relationship between them is no more symmetrical than that of the chambers of the heart – in fact, less so; more like that of the artist to the critic, or a king to his counsellor. (…)

I hold that, like the Master and his emissary in the story, though the cerebral hemispheres should co-operate, they have for some time been in a state of conflict. The subsequent battles between them are recorded in the history of philosophy, and played out in the seismic shifts that characterise the history of Western culture. At present the domain – our civilisation – finds itself in the hands of the vizier, who, however gifted, is effectively an ambitious regional bureaucrat with his own interests at heart. Meanwhile the Master, the one whose wisdom gave the people peace and security, is led away in chains. The Master is betrayed by his emissary.”