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krystalxu

5 things you should know about how your brain learns | Voices From Campus News for Coll... - 0 views

  • how your brain learns
  • Learning builds on prior knowledge
  • The human brain consists of special cells called neurons
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  • these brain fibers grow
  • fibers connect your brain cells to one another at contact points called synapses.
  • Practice leads to stronger connections in the brain
  • brain fibers can only grow from existing brain fibers.
  • build on information that is already stored in the brain.
  • having a strong understanding of the foundational content in a given subject is essential
  • The larger your brain fibers grow, and the more brain cells they connect, the more information can be stored in your brain.
  • With enough practice, these thickened brain fibers will eventually form double connections to one another.
  • causes your dendrites to grow thicker and to coat themselves with a fatty layer.
  • The fatty coating on brain fibers also speeds up your brain’s ability to process information.
  • solidify that information or ability in your brain more permanently.
  • the brain grows fibers that relate to what you are practicing.
  • , but to also perform that skill yourself. This will help you truly learn it.
  • its general limit is five to seven items.
  • memory can be improved by taking proper care of your brain and body.
  • grouping items together before you try to memorize them.
  • a routine lack of sleep can have detrimental impacts on your health.
  • sleep deprivation can drastically diminish your brain’s ability to take in new information.
  • it is extremely important to get a full night’s rest within the first 30 hours of learning new knowledge.
Javier E

Counting Calories to Stay Fit? There's a Trillion Little Problems With That. - Mother J... - 0 views

  • The scientists during Atwater’s era saw the human digestive system as a single engine producing a predictable quantity of energy from a given amount of fuel.
  • Yet the human gut contains a multitude of engines, and they interact with each other in ways science is just beginning to unravel. Over the past 15 years, a fast-growing body of literature suggests that the gut microbiome—the trillions of microbes that live inside us—shapes the way we metabolize food and may play an important role in how we gain weight.
  • Antibiotics, it turns out, reconfigure your gut’s balance in favor of microbes that help us store food as body fat.
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  • As a result, our microbiomes are better at helping us store fat than those of our ancestors.
  • Antibiotics aren’t the only force shifting our internal ecology. Modern diets are full of processed foods and low in fiber, the kind of hard-to-break-down carbohydrates found especially in vegetables, legumes, and whole grains that are crucial for a healthy microbiome.
  • The vast majority of our internal microbes live in the far reaches of our digestive tract, the colon, explains Justin Sonnenburg, an associate professor of microbiology and immunology at Stanford. Because of their location, these microscopic critters “really only get access to the dregs of what we eat”—the dietary fiber that our organs can’t digest. The microbes have evolved to process that fiber by fermenting it with enzymes.
  • feeding this fermentation process appears to be crucial for averting weight gain and diseases like obesity and Type 2 diabetes
  • fiber supplements might also trigger liver cancer.
  • “Right now, the only useful advice I could give somebody would be to eat foods naturally rich in fiber,” he says, like bran cereal and every kind of bean you can think of. Other winners included pears, avocados, apples, seeds, and nuts.
  • The Institute of Medicine recommends that women eat 25 grams and men 38 grams of fiber every day, but Americans only get about 15 grams on average.
  • The choice of whether to lunch on a cup of black beans or five chicken nuggets—which both contain about 220 calories—just got a whole lot easier.
Javier E

Mistakes in the Paleo Diet - The Atlantic - 0 views

  • a high-fiber diet came with a 40-percent lower than average risk of heart disease. Fiber also seems to protect against metabolic syndrome.
  • One of the mechanisms behind these benefits appears to be that fiber essentially feeds the microbes in our guts, encouraging diverse populations. Those microbes are implicated in a vast array of illnesses and wellbeing. A diet heavy on meat and dairy is necessarily lower on fiber.
  • The basic idea behind Paleo is that humans evolved under certain circumstances over millennia, and then those circumstances changed tremendously in the last century, and our bodies did not keep pace. We find ourselves sedentary and overfed on amalgamations that distort our body’s expectations of “food.”
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  • it’s important not to lose focus on the fact that for all its problems, our modern food system has us living longer and less deprived than centuries past. The challenge is striking balance.
  • whole grains have consistently shown to be parts of the diets of the longest-lived, healthiest people.
  • Changing the way we eat is a major change. It will involve multiple decisions every day. Presumably our old habits existed for reasons—convenience, enjoyment, availability, cost, marketing, etc. Modifying the habits that these conditions created means hard work and requires dedication to a cause. I’m not convinced that concern for the health of our bodies years in the future is sufficient.
  • Viktor Frankl wrote in Man’s Search for Meaning that the key is to avoid the temptation to pursue happiness—like that being sold to us through all of the new-year deals—but to pursue meaning. Piles of research have shown that a sense of purpose is a central to long, healthy life.
  • There’s purpose to be had in how we eat—in how conscientious we can be, how minimally we can disrupt the world for those that will come after us and those working to produce and procure our food. I think this is a sustainable and worthy resolution for a healthier way to eat, if you’re intent on making one. It works for the mind and body at once, and, most importantly, not just our own.
maddieireland334

Google Fiber heading to Salt Lake City - 0 views

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    Google made the announcement in a blog post Tuesday. The city joins several others where Google is laying down cable to provide incredibly fast Internet access. Atlanta, Georgia; Nashville, Tennessee; and both Charlotte and Raleigh-Durham in North Carolina are getting Fiber soon. Google Fiber delivers Internet speeds of up to 1 gigabit per second.
maxwellokolo

Is rice healthy? - 0 views

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    It depends on the kind of rice you choose. White rice is considered a nutritionally inferior "refined grain" because its bran and germ are removed during the milling process, which strips away B vitamins, iron and fiber. Though white rice is typically enriched with iron and B vitamins, fiber is not added back.
Javier E

Breakfast was the most important meal of the day - until America ruined it - The Washin... - 1 views

  • It’s probably more accurate to call breakfast the most dangerous meal of the day. Not only because of the sugar in so many breakfast cereals, but also because the refined grains they’re made of are virtually the same thing, once they reach your bloodstream.
  • All the cereal, whole grain or not, is processed in a way to give it indefinite shelf life. As the nutritious parts of our food are what goes bad on the shelf, just about every processed-grain product on the shelf is nutritionally barren.
  • refined wheat, rice and corn, what most mainstream American breakfast cereals are primarily composed of, is quickly converted to sugar on entering your system, requiring that exact same insulin response.
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  • When you see someone spooning sugar onto a bowl of cornflakes or Cheerios, you should not see the act as sweetening something that’s good for you, you should see it as someone spooning sugar onto sugar.
  • the biggest culprits in America’s bad health are sugar and refined grains, in that order. Sugar, a carbohydrate, now seems to be the chief villain. (In his recent book “The Case Against Sugar,” Taubes suggests it should be considered toxic in the same way cigarettes are.) But its nutritional cousin, the refined-grain carbohydrate, may be a close second.
  • Cereal was not always the morning staple that it is today. It only became so at about the same time that our health problems began to be documented, in the 1960s. A coincidence?
  • cereal was initially eaten on Sundays, when the women of our churchgoing nation didn’t have time to make the family breakfast. Once women entered the workforce, though, we began pouring our convenient breakfasts out of a box in significant numbers daily, a trend that peaked in 1995,
  • it may not even just be cereal that’s had such a huge impact on American health. “Maybe the problem,” Sukol said, “is the huge quantity of nutritionally bankrupt foods that are supposed to stand in for breakfast.”
  • By this she means anything composed primarily of refined wheat, which would be, um, 90 percent of the American breakfast repertoire: pancakes, waffles, bagels, toast, muffins, biscuits, scones, croissants, and so on.
  • eating this stuff on an empty stomach (i.e. in the morning), may be especially bad for your system, as there is little fiber, fat or protein in your system to slow the sugar absorption. Our breakfast staples might all best be considered as a single category of food: sugar bomb.
  • she nevertheless recommends that all her patients avoid what she calls “stripped” carbs, carbohydrates stripped of their fiber matrix, before noon.
  • What does she recommend for breakfast? Steel-cut oats, not cooked but rather soaked overnight with a dash of vinegar. I add whole-fat Greek yogurt and some nuts if I have them
  • Beans are great too. I had a delicious dish of lentils and a small amount of basmati rice
  • An egg and some cheese are also a nourishing and satisfying way to begin the day.
  • it throws a different light on the cereal aisle. That hulking behemoth in the middle of the grocery store, the racks of cereal, is stripped-carb and sugar ground zero, representing a kind of unrecognized terrorism wrought on parents by our own food makers
caelengrubb

No, You're Not Left-Brained or Right-Brained | Psychology Today - 0 views

  • there’s no such thing as right-brained or left-brained.
  • The left cerebral hemisphere controls the right side of the body, and about 90 percent of people prefer to write with their right hand, indicating left brain motor dominance.
  • language skills are left lateralized, or largely controlled by the left hemisphere, in over 90 percent of people. That includes 78 percent of people who are not right-handed.
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  • The left cerebral hemisphere is to the “right-brained” poet or novelist as the hamstrings and quadriceps are to a competitive sprinter
  • Because the ability to understand and produce language is focused in the left side of the brain in almost everyone, caricaturing these creative types as using their right brain more than their left brain is silly.
  • visual-spatial abilities—localized to the right cerebral hemisphere—are skills that are absolutely critical for “left-brained” talents like science or engineering.
  • But much of our obsession with the brain’s left and right cerebral hemispheres may have started with studies of split brain patients in the ‘50s. During this time, people who suffered multiple seizures a day underwent intense surgery to treat their epilepsy.
  • To calm the electrical storms that ravaged these patients’ brains, the nerve fibers connecting the left and right hemispheres of the brain were cut. These fibers are collectively known as the corpus callosum
  • Once the corpus callosum is severed on the operating table, the new split brain patient appears astonishingly normal at first glance
  • But careful experiments reveal that this person is really two persons, two streams of consciousness in one body
  • only the left hemisphere can speak
  • The right hemisphere cannot speak, but it can point to words like “yes” or “no” to answer a question
  • Each hemisphere, it seems, maintains independent beliefs and personalities, challenging the notion that we are each an indivisible “self.”
  • We are all “brain-ambidextrous.”
peterconnelly

Can Stimulating the Vagus Nerve Improve Mental Health? - The New York Times - 0 views

  • The term “vagus nerve” is actually shorthand for thousands of fibers. They are organized into two bundles that run from the brain stem down through each side of the neck and into the torso, branching outward to touch our internal organs, said Dr. Kevin J. Tracey, a neurosurgeon and president of the Feinstein Institutes for Medical Research, Northwell Health’s research center in New York.
  • Scientists first began examining the vagus nerve in the late 1800s to investigate whether stimulating it could be a potential treatment for epilepsy. They later discovered that a side effect of activating the nerve was an improvement in mood. Today, researchers are examining how the nerve can affect psychiatric disorders, among other conditions.
  • Researchers are now recruiting patients for the largest clinical trial to date examining to what degree vagus nerve stimulation may help patients with depression who have been unable to find relief with other treatments.
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  • In general, one of the problems with treating depression “is that we’ve got a lot of medications that pretty much do the same thing,” Dr. Aaronson said. And when patients do not respond to those medications, “we don’t have a lot of novel stuff.”
  • The activity of the vagus nerve is difficult to measure directly, especially given how complex it is. But because some vagus nerve fibers connect with the heart, experts can indirectly measure cardiac vagal tone — or the way in which your nervous system regulates your heart — by looking at your heart rate variability, which are the fluctuations in the amount of time between your heartbeats, on an EKG.
  • Holding your breath and submerging your face in cold water can trigger the “diving reflex,” a response that slows the heart beat and constricts blood vessels. Some people who have tried it report that it has a calming effect and can even reduce insomnia. Others wrap an ice pack in cloth and place it on their chest to relieve anxiety.
  • “For wellness, try to maintain high vagus nerve activity through mindfulness, exercise and paced breathing,” Dr. Tracey said. “These are all very good for you.”
Duncan H

What to Do About 'Coming Apart' - NYTimes.com - 0 views

  • Murray has produced a book-length argument placing responsibility for rising inequality and declining mobility on widespread decay in the moral fiber of white, lower-status, less well-educated Americans, putting relatively less emphasis on a similar social breakdown among low-status, less-educated Americans of all races
  • Murray’s strength lies in his ability to raise issues that center-left policy makers and academics prefer, for the most part, to shy away from. His research methods, his statistical analyses and the conclusions he draws are subject to passionate debate. But by forcing taboo issues into the public arena, Murray has opened up for discussion politically salient issues that lurk at a subterranean level in the back-brains of many voters, issues that are rarely examined with the rigor necessary to affirm or deny their legitimacy.
  • The National Review and the Conservative Monitor cited “Losing Ground” as one of the ten books that most changed America. Murray’s bookseemed like a bolt of lightning in the middle of the night revealing what should have been plain as the light of day. The welfare state so carefully built up in the 1960s and 1970s created a system of disincentives for people to better their own lives. By paying welfare mothers to have children out of wedlock into a poor home, more of these births were encouraged. By doling out dollars at a rate that could not be matched by the economy, the system encouraged the poor to stay home.
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  • He contends in “Coming Apart” that there was far greater social cohesion across class lines 50 years ago because “the powerful norms of social and economic behavior in 1960 swept virtually everyone into their embrace,” adding in a Jan. 21 op-ed in the Wall Street Journal thatOver the past 50 years, that common civic culture has unraveled. We have developed a new upper class with advanced educations, often obtained at elite schools, sharing tastes and preferences that set them apart from mainstream America. At the same time, we have developed a new lower class, characterized not by poverty but by withdrawal from America’s core cultural institutions.According to Murray, higher education has now become a proxy for higher IQ, as elite colleges become sorting mechanisms for finding, training and introducing to each other the most intellectually gifted young people. Fifty years into the education revolution, members of this elite are likely to be themselves the offspring of cognitively gifted parents, and to ultimately bear cognitively gifted children.
  • “Industriousness: The norms for work and women were revolutionized after 1960, but the norm for men putatively has remained the same: Healthy men are supposed to work. In practice, though, that norm has eroded everywhere.”
  • Murray makes the case that cognitive ability is worth ever more in modern advanced, technologically complex hypercompetitive market economies. As an example, Murray quotes Bill Gates: “Software is an IQ business. Microsoft must win the IQ war or we won’t have a future.”
  • Murray alleges that those with higher IQs now exhibit personal and social behavioral choices in areas like marriage, industriousness, honesty and religiosity that allow them to enjoy secure and privileged lives. Whites in the lower social-economic strata are less cognitively able – in Murray’s view – and thus less well-equipped to resist the lure of the sexual revolution and doctrines of self-actualization so they succumb to higher rates of family dissolution, non-marital births, worklessness and criminality. This interaction between IQ and behavioral choice, in Murray’s framework, is what has led to the widening income and cultural gap.
  • Despised by the left, Murray has arguably done liberals a service by requiring them to deal with those whose values may seem alien, to examine the unintended consequences of their policies and to grapple with the political impact of assertions made by the right. He has also amassed substantial evidence to bolster his claims and at the same time elicited a formidable academic counter-attack.
  • To Murray, the overarching problem is that liberal elites, while themselves living lives of probity, have refused to proselytize for the bourgeois virtues to which they subscribe, thus leaving their less discerning fellow-citizens to flounder in the anti-bourgeois legacy of the counter-cultural 1960s.
  • “Great Civic Awakening” among the new upper class – an awakening that will lead to the kind of “moral rearmament” and paternalism characteristic of anti-poverty drives in the 19th century. To achieve this, Murray believes, the “new upper class must once again fall in love with what makes America different.”
  • The cognitive elites Murray cites are deeply committed to liberal norms of cultural tolerance and permissiveness. The antipathy to the moralism of the religious right has, in fact, been a major force driving these upscale, secular voters into the Democratic party.
  • changes in the world economy may be destructive in terms of the old social model, but they are profoundly liberating and benign in and of themselves. The family farm wasn’t dying because capitalism had failed or a Malthusian crisis was driving the world to starvation. The family farm died of abundance; it died of the rapidly rising productivity that meant that fewer and fewer people had to work to produce the food on which humanity depended.Mead continues:Revolutions in manufacturing and, above all, in communications and information technology create the potential for unprecedented abundance and a further liberation of humanity from meaningless and repetitive work. Our problem isn’t that the sources of prosperity have dried up in a long drought; our problem is that we don’t know how to swim. It is raining soup, and we are stuck holding a fork.The 21st century, Mead adds,must reinvent the American Dream. It must recast our economic, social, familial, educational and political systems for new challenges and new opportunities. Some hallowed practices and institutions will have to go under the bus. But in the end, the changes will make us richer, more free and more secure than we are now.Mead’s predictions may or may not prove prescient, but it his thinking, more than Murray’s, that reflects the underlying optimism that has sustained the United States for more than two centuries — a refusal to believe that anything about human nature is essentially “intractable.” Mead’s way of looking at things is not only more inviting than Murray’s, it is also more on target.
Javier E

Beating History: Why Today's Rising Powers Can't Copy the West - Heather Horn - Interna... - 0 views

  • For the BRIC rising economies -- Brazil, Russia, India, and China -- what can be learned by looking at the rise of powers throughout history?
  • production in "all organic economies was set by the annual cycle of plant growth" -- it limits food, fuel, fiber, and building materials. Coal changed all that. By digging into the earth to get minerals instead of growing fuel on the earth, you get a vastly more efficient source of fuel and completely change the rules of the game. You've shifted from an organic economy, as he calls it, to an energy-rich economy. But the economic reprieve the fossil fuels offered could be nearing an end, as global supply becomes more competitive.
  • Historians still debate the nature and causes of the Industrial Revolution, but one thing they seem to agree on is that the it wasn't just industrial -- it was demographic and agricultural as well. Prior to the Industrial Revolution, populations all over the globe had non-negotiable checks on their growth: too many people and you get ecological crises and famines to push the number back down. In the 18th and 19th centuries, England managed to solve this problem, with tremendous leaps in population and urbanization as a result.
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  • What the rise of the BRICs symbolizes to both panicked individuals in the West and optimistic ones elsewhere is a radical shift in the geography of power -- a catch-up or reversal of the Western global dominance that was established with the Industrial Revolution.
  • developing countries won't be able to follow the West's path to becoming rich, because that path required certain things that were largely particular to that one period in history.
  • The challenge ahead for the BRICs, then, is to figure out how to maintain growth in a world where the vast new frontier opened up by the Industrial Revolution appears to be closing. The BRICs can play the West's game better than the West, both through technological innovation and population growth, but only for so long. The whole world has to figure out a way of dealing with energy and agriculture.
Javier E

Untier Of Knots « The Dish - 0 views

  • Benedict XVI and John Paul II focused on restoring dogmatic certainty as the counterpart to papal authority. Francis is arguing that both, if taken too far, can be sirens leading us away from God, not ensuring our orthodoxy but sealing us off in calcified positions and rituals that can come to mean nothing outside themselves
  • In this quest to seek and find God in all things there is still an area of uncertainty. There must be. If a person says that he met God with total certainty and is not touched by a margin of uncertainty, then this is not good. For me, this is an important key. If one has the answers to all the questions – that is the proof that God is not with him. It means that he is a false prophet using religion for himself. The great leaders of the people of God, like Moses, have always left room for doubt. You must leave room for the Lord, not for our certainties; we must be humble.
  • If the Christian is a restorationist, a legalist, if he wants everything clear and safe, then he will find nothing. Tradition and memory of the past must help us to have the courage to open up new areas to God.
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  • Ratzinger’s Augustinian notion of divine revelation: it is always a radical gift; it must always be accepted without question; it comes from above to those utterly unworthy below; and we are too flawed, too sinful, too human to question it in even the slightest respect. And if we ever compromise an iota on that absolute, authentic, top-down truth, then we can know nothing as true. We are, in fact, lost for ever.
  • we can say what God is not, we can speak of his attributes, but we cannot say what He is. That apophatic dimension, which reveals how I speak about God, is critical to our theology
  • I would also classify as arrogant those theologies that not only attempted to define with certainty and exactness God’s attributes, but also had the pretense of saying who He was.
  • It is only in living that we achieve hints and guesses – and only hints and guesses – of what the Divine truly is. And because the Divine is found and lost by humans in time and history, there is no reachable truth for humans outside that time and history.
  • We are part of an unfolding drama in which the Christian, far from clinging to some distant, pristine Truth he cannot fully understand, will seek to understand and discern the “signs of the times” as one clue as to how to live now, in the footsteps of Jesus. Or in the words of T.S. Eliot, There is only the fight to recover what has been lost And found and lost again and again: and now, under conditions That seem unpropitious. But perhaps neither gain nor loss. For us, there is only the trying. The rest is not our business.
  • In the end, you realize your only real option – against almost every fiber in your irate being – is to take each knot in turn, patiently and gently undo it, loosen a little, see what happens, and move on to the next. You will never know exactly when all the knots will resolve themselves – it can happen quite quickly after a while or seemingly never. But you do know that patience, and concern with the here and now, is the only way to “solve” the “problem.” You don’t look forward with a plan; you look down with a practice.
  • A Christian life is about patience, about the present and about trust that God is there for us. It does not seek certainty or finality to life’s endless ordeals and puzzles. It seeks through prayer and action in the world to listen to God’s plan and follow its always-unfolding intimations. It requires waiting. It requires diligence
  • We may never know why exactly Benedict resigned as he did. But I suspect mere exhaustion of the body and mind was not the whole of it. He had to see, because his remains such a first-rate mind, that his project had failed, that the levers he continued to pull – more and more insistent doctrinal orthodoxy, more political conflict with almost every aspect of the modern world, more fastidious control of liturgy – simply had no impact any more.
  • The Pope must accompany those challenging existing ways of doing things! Others may know better than he does. Or, to feminize away the patriarchy: I dream of a church that is a mother and shepherdess. The church’s ministers must be merciful, take responsibility for the people, and accompany them like the good Samaritan, who washes, cleans, and raises up his neighbor. This is pure Gospel.
  • the key to Francis’ expression of faith is an openness to the future, a firm place in the present, and a willingness to entertain doubt, to discern new truths and directions, and to grow. Think of Benedict’s insistence on submission of intellect and will to the only authentic truth (the Pope’s), and then read this: Within the Church countless issues are being studied and reflected upon with great freedom. Differing currents of thought in philosophy, theology, and pastoral practice, if open to being reconciled by the Spirit in respect and love, can enable the Church to grow, since all of them help to express more clearly the immense riches of God’s word. For those who long for a monolithic body of doctrine guarded by all and leaving no room for nuance, this might appear as undesirable and leading to confusion. But in fact such variety serves to bring out and develop different facets of the inexhaustible riches of the Gospel.
  • Underlying all this is a profound shift away from an idea of religion as doctrine and toward an idea of religion as a way of life. Faith is a constantly growing garden, not a permanently finished masterpiece
  • faith is, for Francis, a way of life, not a set of propositions. It is a way of life in community with others, lived in the present yet always, deeply, insistently aware of eternity.
  • Father Howard Gray S.J. has put it simply enough: Ultimately, Ignatian spirituality trusts the world as a place where God dwells and labors and gathers all to himself in an act of forgiveness where that is needed, and in an act of blessing where that is prayed for.
  • Francis, like Jesus, has had such an impact in such a short period of time simply because of the way he seems to be. His being does not rely on any claims to inherited, ecclesiastical authority; his very way of life is the only moral authority he wants to claim.
  • “Preach the Gospel always. If necessary, with words.”
  • these actions – of humility, of kindness, of compassion, and of service – are integral to Francis’ resuscitation of Christian moral authority. He is telling us that Christianity, before it is anything else, is a way of life, an orientation toward the whole, a living commitment to God through others. And he is telling us that nothing – nothing – is more powerful than this.
  • I would not speak about, not even for those who believe, an “absolute” truth, in the sense that absolute is something detached, something lacking any relationship. Now, the truth is a relationship! This is so true that each of us sees the truth and expresses it, starting from oneself: from one’s history and culture, from the situation in which one lives, etc. This does not mean that the truth is variable and subjective. It means that it is given to us only as a way and a life. Was it not Jesus himself who said: “I am the way, the truth, the life”? In other words, the truth is one with love, it requires humbleness and the willingness to be sought, listened to and expressed.
  • “proselytism is solemn nonsense.” That phrase – deployed by the Pope in dialogue with the Italian atheist Eugenio Scalfari (as reported by Scalfari) – may seem shocking at first. But it is not about denying the revelation of Jesus. It is about how that revelation is expressed and lived. Evangelism, for Francis, is emphatically not about informing others about the superiority of your own worldview and converting them to it. That kind of proselytism rests on a form of disrespect for another human being. Something else is needed:
  • nstead of seeming to impose new obligations, Christians should appear as people who wish to share their joy, who point to a horizon of beauty and who invite others to a delicious banquet. It is not by proselytizing that the Church grows, but “by attraction.”
  • what you see in the life of Saint Francis is a turn from extreme violence to extreme poverty, as if only the latter could fully compensate for the reality of the former. This was not merely an injunction to serve the poor. It is the belief that it is only by being poor or becoming poor that we can come close to God
  • Pope Francis insists – and has insisted throughout his long career in the church – that poverty is a key to salvation. And in choosing the name Francis, he explained last March in Assisi, this was the central reason why:
  • Saint Francis. His conversion came after he had gone off to war in defense of his hometown, and, after witnessing horrifying carnage, became a prisoner of war. After his release from captivity, his strange, mystical journey began.
  • the priority of practice over theory, of life over dogma. Evangelization is about sitting down with anyone anywhere and listening and sharing and being together. A Christian need not be afraid of this encounter. Neither should an atheist. We are in this together, in the same journey of life, with the same ultimate mystery beyond us. When we start from that place – of radical humility and radical epistemological doubt – proselytism does indeed seem like nonsense, a form of arrogance and detachment, reaching for power, not freedom. And evangelization is not about getting others to submit their intellect and will to some new set of truths; it is about an infectious joy for a new way of living in the world. All it requires – apart from joy and faith – is patience.
  • Some have suggested that much of what Francis did is compatible with PTSD. He disowned his father and family business, and he chose to live homeless, and close to naked, in the neighboring countryside, among the sick and the animals. From being the dashing man of society he had once been, he became a homeless person with what many of us today would call, at first blush, obvious mental illness.
  • But there is little sense that a political or economic system can somehow end the problem of poverty in Francis’ worldview. And there is the discomfiting idea that poverty itself is not an unmitigated evil. There is, indeed, a deep and mysterious view, enunciated by Jesus, and held most tenaciously by Saint Francis, that all wealth, all comfort, and all material goods are suspect and that poverty itself is a kind of holy state to which we should all aspire.
  • Not only was Saint Francis to become homeless and give up his patrimony, he was to travel on foot, wearing nothing but a rough tunic held together with rope. Whatever else it is, this is not progressivism. It sees no structural, human-devised system as a permanent improver of our material lot. It does not envision a world without poverty, but instead a church of the poor and for the poor. The only material thing it asks of the world, or of God, is daily bread – and only for today, never for tomorrow.
  • From this perspective, the idea that a society should be judged by the amount of things it can distribute to as many people as possible is anathema. The idea that there is a serious social and political crisis if we cannot keep our wealth growing every year above a certain rate is an absurdity.
  • this is a 21st-century heresy. Which means, I think, that this Pope is already emerging and will likely only further emerge as the most potent critic of the newly empowered global capitalist project.
  • Now, the only dominant ideology in the world is the ideology of material gain – either through the relatively free markets of the West or the state-controlled markets of the East. And so the church’s message is now harder to obscure. It stands squarely against the entire dominant ethos of our age. It is the final resistance.
  • For Francis, history has not come to an end, and capitalism, in as much as it is a global ideology that reduces all of human activity to the cold currency of wealth, is simply another “ism” to be toppled in humankind’s unfolding journey toward salvation on earth.
  • Francis will grow as the church reacts to him; it will be a dynamic, not a dogma; and it will be marked less by the revelation of new things than by the new recognition of old things, in a new language. It will be, if its propitious beginnings are any sign, a patient untying of our collective, life-denying knots.
grayton downing

Optogenetics and OCD | The Scientist Magazine® - 0 views

  • abnormal brain activity seen in patients with obsessive-compulsive disorder (OCD) is a likely cause of the condition, according to two papers published today (June 6) in Science. Both studies used optogenetic techniques, which allow specific brain cells to be turned on and off at the flick of a light switch, to link the abnormal brain activity to OCD behavior in mice.
  • relationship between [neural] circuit abnormalities and [OCD-like] behavior,
  • “so I’m very aware of how severe the illness is and how important it is for us to develop new and more effective treatments.” The problem is, she added, “we don’t have a very good understanding of the pathologic changes that lead to OCD.”
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  • Ahmari turned to mice and to optogenetics—whereby specific types of brain cells can be switched on and off in response to light. The cells of interest were engineered to express light-responsive ion channels, such that when the cells are exposed to light—by means of a fiber optic cable pointing a laser at the relevant brain region—the channels open, ions flood in, and nerve impulses fire.
  • But crucially, the teams had very slightly different targets in the striatum—the general ventral striatum in the case of Ahmari’s study and the specific fast-spiking inhibitory interneurons of the centromedial striatum in Graybiel’s study, suggesting that different neural circuits send inhibitory and stimulatory signals for certain OCD-like behaviors.
  • “they’ve been able to really delineate a pathway for compulsive behaviors in a more refined way than we’ve ever been able to do in humans, and that’s exciting because it points us in the direction of pathogenesis and pathophysiology of the disorder, but also . . . to new targets for potential intervention.”
Javier E

Lies, Damned Lies, and Medical Science - Magazine - The Atlantic - 0 views

  • He and his team have shown, again and again, and in many different ways, that much of what biomedical researchers conclude in published studies—conclusions that doctors keep in mind when they prescribe antibiotics or blood-pressure medication, or when they advise us to consume more fiber or less meat, or when they recommend surgery for heart disease or back pain—is misleading, exaggerated, and often flat-out wrong. He charges that as much as 90 percent of the published medical information that doctors rely on is flawed. His work has been widely accepted by the medical community
  • for all his influence, he worries that the field of medical research is so pervasively flawed, and so riddled with conflicts of interest, that it might be chronically resistant to change—or even to publicly admitting that there’s a problem
  • he discovered that the range of errors being committed was astonishing: from what questions researchers posed, to how they set up the studies, to which patients they recruited for the studies, to which measurements they took, to how they analyzed the data, to how they presented their results, to how particular studies came to be published in medical journals
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  • “The studies were biased,” he says. “Sometimes they were overtly biased. Sometimes it was difficult to see the bias, but it was there.” Researchers headed into their studies wanting certain results—and, lo and behold, they were getting them. We think of the scientific process as being objective, rigorous, and even ruthless in separating out what is true from what we merely wish to be true, but in fact it’s easy to manipulate results, even unintentionally or unconsciously. “At every step in the process, there is room to distort results, a way to make a stronger claim or to select what is going to be concluded,” says Ioannidis. “There is an intellectual conflict of interest that pressures researchers to find whatever it is that is most likely to get them funded.”
  • Ioannidis laid out a detailed mathematical proof that, assuming modest levels of researcher bias, typically imperfect research techniques, and the well-known tendency to focus on exciting rather than highly plausible theories, researchers will come up with wrong findings most of the time.
  • if you’re attracted to ideas that have a good chance of being wrong, and if you’re motivated to prove them right, and if you have a little wiggle room in how you assemble the evidence, you’ll probably succeed in proving wrong theories right. His model predicted, in different fields of medical research, rates of wrongness roughly corresponding to the observed rates at which findings were later convincingly refuted: 80 percent of non-randomized studies (by far the most common type) turn out to be wrong, as do 25 percent of supposedly gold-standard randomized trials, and as much as 10 percent of the platinum-standard large randomized trials.
  • He zoomed in on 49 of the most highly regarded research findings in medicine over the previous 13 years, as judged by the science community’s two standard measures: the papers had appeared in the journals most widely cited in research articles, and the 49 articles themselves were the most widely cited articles in these journals
  • Ioannidis was putting his contentions to the test not against run-of-the-mill research, or even merely well-accepted research, but against the absolute tip of the research pyramid. Of the 49 articles, 45 claimed to have uncovered effective interventions. Thirty-four of these claims had been retested, and 14 of these, or 41 percent, had been convincingly shown to be wrong or significantly exaggerated. If between a third and a half of the most acclaimed research in medicine was proving untrustworthy, the scope and impact of the problem were undeniable.
carolinewren

Laser-Controlled And See-Through Brains Get Biomedical Prize | Popular Science - 0 views

  • The mouse brain above has undergone a process called CLARITY
  • Through a series of chemical reactions, CLARITY stabilizes organs taken from an animal or human and makes them transparent to the naked eye.
  • allows scientists to look into organs in a whole new way.
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  • The rodent at the top of this story is being studied with a technique called optogenetics, which Deisseroth pioneered.
  • genetically engineered the mouse so that its brain cells turn certain genes on or off when scientists shine laser light onto them. The light enters the mouse's brain through that optical fiber you see in the photo.
  • For example, say 20 percent of people with autism don't have Gene A, but scientists aren't sure what Gene A does. They could turn off Gene A in a mouse's brain and see what happens next. The mouse's reaction could provide a clue about what Gene A does in people and why it's missing in certain patients
Javier E

Now Is the Time to Talk About the Power of Touch - The New York Times - 1 views

  • In 1945, the Austrian physician René Spitz investigated an orphanage that took extra care to make sure its infants were not infected with disease. The children received first-class nutrition and medical care, but they were barely touched, to minimize their contact with germs. The approach was a catastrophe. Thirty-seven percent of the babies died before reaching age 2.
  • It turns out that empathetic physical contact is essential for life. Intimate touch engages the emotions and wires the fibers of the brain together.
  • The famous Grant Study investigated a set of men who had gone to Harvard in the 1940s. The men who grew up in loving homes earned 50 percent more over the course of their careers than those from loveless ones. They suffered from far less chronic illness and much lower rates of dementia in old age. A loving home was the best predictor of life outcomes.
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  • For this reason, cultures all around the world have treated emotional touching as something apart. The Greeks labeled the drive to touch with the word “eros,” and they meant something vaster and deeper than just sexual pleasure.
  • “Animals have sex and human beings have eros, and no accurate science is possible without making this distinction,” Allan Bloom observed.
  • The Abrahamic religions also treat sex as something sacred and beautiful when enveloped in loving and covenantal protections, and as something disordered and potentially peace-destroying when not.
  • Over the past 100 years or so, advanced thinkers across the West have worked to take the shame out of sex, surely a good thing. But they’ve also disenchanted it
  • “One of the principal outcomes of the sexual revolution was to establish that sex is just like any other social interaction — nothing taboo or sacred about it.” Sex is seen as a shallow physical and social thing, not a heart and soul altering thing.
  • One unintended effect of this disenchantment is that it becomes easy to underestimate the risks inherent in any encounter.
  • The woman who talked in an online article about her date with Aziz Ansari is being criticized because what happened to her was not like what happened to the victims of Harvey Weinstein and Louis C.K
  • The assumption seems to be that as long as there’s consent between adults, everything else is kosher.
  • Everything we know about touch suggests that even with full consent, the emotional quality of an encounter can have profound positive or negative effects. If Ansari did treat her coldly or neglectfully, it’s reasonable to think that the shame she felt right after was the surface effect of a deeper wound. Neglectful, dehumanizing sex is not harassment, but it’s some other form of serious harm.
  • Disenchanting emotional touch also causes people to underestimate the way past experiences shape current behavior.
  • Agency is learned, not bred. And one of the things that undermines agency most powerfully is past sexual harm.
  • The abuse of intimacy erodes all the building blocks of agency: self-worth, resiliency and self-efficacy (the belief that you can control a situation).
  • It is precisely someone who lives within a culture of supposedly zipless encounters who is most likely to be unable to take action when she feels uncomfortable.
  • I hate the way Babe, which published the story about the Ansari date, violated everybody’s privacy here. But it seems that the beginning of good sense is to take the power of touch seriously, as something that has profound good and bad effects.
  • It seems that the smarter we get about technology, the dumber we get about relationships. We live in a society in which loneliness, depression and suicide are on the rise.
  • The guiding moral principle here is not complicated: Try to treat other people as if they possessed precious hearts and infinite souls. Everything else will follow.
Javier E

When scientists saw the mouse heads glowing, they knew the discovery was big - The Wash... - 0 views

  • have found evidence linking problems in the lymphatic and glymphatic systems to Alzheimer’s. In a study on mice, they showed that glymphatic dysfunction contributes to the buildup in the brain of amyloid beta, a protein that plays a key role in the disease.
  • several colleagues examined postmortem tissue from 79 human brains. They focused on aquaporin-4, a key protein in glymphatic vessels. In the brains of people with Alzheimer’s, this protein was jumbled; in those without the disease, the protein was well organized. This suggests that glymphatic breakdowns may play a role in the disease
  • The vessels have also been implicated in autoimmune disease. Researchers knew that the immune system has limited access to the brain. But at the same time, the immune system kept tabs on the brain’s status; no one knew exactly how. Some researchers theorize that the glymphatic system could be the conduit and that in diseases such as multiple sclerosis — where the body’s immune system attacks certain brain cells — the communication may go awry.
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  • The system may also play a role in symptoms of traumatic brain injur
  • Mice are a good model, she says, because their glymphatic systems are very similar to humans’. She and Iliff found that even months after being injured, the animals’ brains were still not clearing waste efficiently, leading to a buildup of toxic compounds, including amyloid beta. Nedergaard returns to the dishwasher analogy. “It’s like if you only use a third of the water when you turn on the machine,” she says. “You won’t get clean dishes.”
  • in mice, omega-3 fatty acidsimproved glymphatic functioning.
  • Nedergaard has shown that at least in mice, the system processes twice as much fluid during sleep as it does during wakefulness. She and her colleagues focused on amyloid beta; they found that the lymphatic system removed much more of the protein when the animals were asleep than when they were awake. She suggests that over time, sleep dysfunction may contribute to Alzheimer’s and perhaps other brain illnesses. “You only clean your brain when you’re sleeping,” she says. “This is probably an important reason that we sleep. You need time off from consciousness to do the housekeeping.”
  • Sleeping on your stomach is also not very effective; sleeping on your back is somewhat better, while lying on your side appears to produce the best results.
  • glymphatic flow is significantly decreased in the period just before a migraine. The intense pain in these headaches is caused largely by inflamed nerves in the tissue that surrounds the brain. Neuroscientists Rami Burstein and Aaron Schain, the lead authors, theorize that faulty clearance of molecular waste from the brain could trigger inflammation in these pain fibers.
  • other scientists have found that deep breathing significantly increases the glymphatic transport of cerebrospinal fluid into the brain.
sissij

Is Crime Forensics Flawed? | Big Think - 0 views

  • This is concerning because in recent years, time honored methods such as fingerprinting, hair and fiber analysis, firearm analysis, and others, have come under intense scrutiny.
  • Sessions plans to replace the commission with an internal body called the department crime task force, headed by a senior forensic adviser who will report to him directly. No one has been named for the position as of yet.
  • Since 1989, DNA evidence has exonerated 329 individuals. Bite mark and hair analysis—part of what is known as pattern forensics, helped convict 25% of them.
  •  
    I have long been interested in forensics. There was a late night show called forensic files that I really like to watch. As I learned in biology that human fingerprint is very unique, I have never imagined that there are actually serious flaws in forensics. As long as there is human involvement in this activity, it couldn't be one hundred percent reliable. --Sissi (4/21/2017)
Javier E

Amazon US customers have one week to opt out of mass wireless sharing | Amazon | The Gu... - 1 views

  • Amazon customers have one week to opt out of a plan that would turn every Echo speaker and Ring security camera in the US into a shared wireless network, as part of the company’s plan to fix connection problems for its smart home devices.
  • The proposal, called Amazon Sidewalk, involves the company’s devices being used as a springboard to build city-wide “mesh networks” that help simplify the process of setting up new devices, keep them online even if they’re out of range of home wifi, and extend the range of tracking devices such as those made by Tile.
  • The feature works by creating a low-bandwidth network using smart home devices such as Amazon Echoes and Ring security cameras. At its simplest, it means that a new Echo can set itself up using a neighbour’s wifi, or a security camera can continue to send motion alerts even if its connection to the internet is disrupted, by piggybacking on the connection of another camera across the street.
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  • “In addition to capturing everyone’s shopping habits (from amazon.com) and their internet activity (as AWS is one of the most dominant web hosting services) … now they are also effectively becoming a global ISP with a flick of a switch, all without even having to lay a single foot of fiber”
  • Amazon is not the first company to look to create such a network. Apple has taken a similar approach with the company’s range of AirTag item trackers, which can connect to the internet through any compatible iPhone they come into contact with, not simply their owner’s.
tongoscar

$11 Billion And Counting: Trump's Border Wall Would Be The World's Most Costly : NPR - 0 views

  • The pricetag for President Trump's border wall has topped $11 billion — or nearly $20 million a mile — to become the most expensive wall of its kind anywhere in the world.
  • If the Trump administration completes all of the wall projects it has set in motion, three-quarters of the U.S. southern border would be walled off from Mexico.
  • On one side of a caliche road, you can see the pedestrian fence that was erected more than a decade ago.
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  • "The border wall system will include a 150-foot enforcement zone, lighting, cameras, other technology, and most importantly an all-weather access road making it easier to respond to (undocumented immigrant) traffic," Alvarez said. "So it's not just gonna be the barrier itself."
  • There's more steel — an expensive commodity — in a 30-foot structure. Also, there are powerful floodlights, and every mile will have conduit for electric power and fiber optics that connect the surveillance cameras. Electronic gates that allow passage through the wall cost up to $1 million a piece. And there's a graded, graveled enforcement zone as wide as a six-lane highway.
anniina03

A.I. Comes to the Operating Room - The New York Times - 0 views

  • Brain surgeons are bringing artificial intelligence and new imaging techniques into the operating room, to diagnose tumors as accurately as pathologists, and much faster, according to a report in the journal Nature Medicine.
  • The traditional method, which requires sending the tissue to a lab, freezing and staining it, then peering at it through a microscope, takes 20 to 30 minutes or longer. The new technique takes two and a half minutes.
  • In addition to speeding up the process, the new technique can also detect some details that traditional methods may miss, like the spread of a tumor along nerve fibers
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  • The new process may also help in other procedures where doctors need to analyze tissue while they are still operating, such as head and neck, breast, skin and gynecologic surgery, the report said. It also noted that there is a shortage of neuropathologists, and suggested that the new technology might help fill the gap in medical centers that lack the specialty. Video Advertisement LIVE 00:00 1:05
  • Algorithms are also being developed to help detect lung cancers on CT scans, diagnose eye disease in people with diabetes and find cancer on microscope slides.
  • The diagnoses were later judged right or wrong based on whether they agreed with the findings of lengthier and more extensive tests performed after the surgery.The result was a draw: humans, 93.9 percent correct; A.I., 94.6 percent.
  • At some centers, he said, brain surgeons do not even order frozen sections because they do not trust them and prefer to wait for tissue processing after the surgery, which may take weeks to complete.
  • Some types of brain tumor are so rare that there is not enough data on them to train an A.I. system, so the system in the study was designed to essentially toss out samples it could not identify.
  • “It won’t change brain surgery,” he said, “but it’s going to add a significant new tool, more significant than they’ve stated.”
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