Tag Archives | Brain

Neuroscientist Claims Internet Has Ruined The Way We Read

"No, it's fine. Enjoy reading "Top Ten Celebrity Liposuction Disasters. I'll just stay here and silently judge you."PIC: Dutch National Archives (CC)

“No, it’s fine. Enjoy reading “Top Ten Celebrity Liposuction Disasters. I’ll just stay here and silently judge you.”PIC: Dutch National Archives (CC)

Neuroscientist Maryanne Wolfe believes that the human brain has changed in response to to the way that information is presented online, and the changes aren’t entirely positive. Wolfe presents her initial problems enjoy Herman Hesse’s novel The Glass Bead Game as a consequence of these brain changes.

I’m not so sure, myself. I wonder if she has considered that her reading tastes may have changed for other reasons, or maybe that The Glass Bead Game just isn’t her cup of tea? I read a ton of Herman Hesse in high school and college, but haven’t visited his work in a couple of decades. I’m not sure I’d enjoy any of it now, but I don’t believe the internet is to blame. Then again, I guess it might make a convenient excuse for why I can’t get through Thomas Pynchon’s Gravity’s Rainbow or James Joyce’s Ulysses in spite of numerous attempts to do so.… Read the rest

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How Magic Mushrooms Alter Your Brain

magic mushroomsVia Ultraculture, Jason Louv on how magic mushrooms temporarily quiet portions of the brain that normally constrain us:

According to two new studies released this week, psilocybin mushrooms apparently work by decreasing activity in key areas of the brain, rather than increasing it. Blood flow decreases to the medical prefrontal cortex (mPFC) and posterior cingulate cortex (PCC). Overactivity in the mPFC is associated with depression, one reason why psilocybin can be associated with antidepressant effects; the PCC is often associated with consciousness and identity.

Researchers suggest that what may actually be happening with psychedelics is decreased blood flow to brain areas that constrain our sensory experience of the world and our sense of identity—allowing the brain to relax its grip on ordering reality and open up to a broader spectrum.

Professor David Nutt, from the Department of Medicine at Imperial College London, said: “We found that psilocybin actually caused activity to decrease in areas that… constrain our experience of the world and keep it orderly.

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The Quest for a Better Brain

320px-Utah_array_pat5215088How soon can we expect to see brain implants for perfect memory, enhanced vision, hypernormal focus or an expert golf swing?, ask Gary Marcus and Christof Koch for the Wall Street Journal:

What would you give for a retinal chip that let you see in the dark or for a next-generation cochlear implant that let you hear any conversation in a noisy restaurant, no matter how loud? Or for a memory chip, wired directly into your brain’s hippocampus, that gave you perfect recall of everything you read? Or for an implanted interface with the Internet that automatically translated a clearly articulated silent thought (“the French sun king”) into an online search that digested the relevant Wikipedia page and projected a summary directly into your brain?

Science fiction? Perhaps not for very much longer. Brain implants today are where laser eye surgery was several decades ago. They are not risk-free and make sense only for a narrowly defined set of patients—but they are a sign of things to come.

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Is Religion Good for Your Brain?

Eastman Johnson, Child at Prayer, circa 1873A scientific justification for otherwise inexplicable belief systems? From Discovery News:

If you live in Georgia, you’re more likely to have a healthy brain than if you live in Minnesota. That’s according to an annual state-by-state ranking released this week by a national health education campaign called Beautiful Minds.

While Georgians could use more “mental stimulation through reading and game playing,” their high level of religious activity elevated them to a No. 10 ranking. And while Minnesotans read more and are active in their communities, their low level of religious activities contributed to their No. 31 ranking.

Why the emphasis on religion? Research has linked religious activity with everything from reduced stress to better memory retention.

One recent study, published in December of 2013 in JAMA Psychiatry, found that people at risk of depression were much less vulnerable if they identified as religious: Brain MRIs revealed that religious participants had thicker brain cortices than those who weren’t as religious (those with a family history of depression often have a thinning of the cortices).

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The Brain Shrinking Except for the Frontal Lobe: It’s Growing

PIC: Camazine (CC)

PIC: Camazine (CC)

Scientific studies indicate that while the brain overall is shrinking, the frontal lobe – that part of the brain responsible for communication, planning and executive function, among other things – is growing. No one knows why for certain, but there are a lot of theories. Could it be related to the birth of reading and writing? Also interesting is an apparent increase in sexual dimorphism:

Via EvoAnth:

The 7,000 years or so these endocasts cover is also the period writing was invented and spread around the world; until many countries have almost universal literacy rates. In other words, as reading and writing becomes more important the region of the brain needed for it becomes larger, despite the fact the rest of the brain is shrinking. It’s a “no duh” question; but could there be a link? The researchers think so1, but it is worth noting the frontal lobe is also linked to planning and memory.

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Reductionist Neurophilosopher Dr. Patricia Churchland Awkwardly Ends Skeptiko Interview After Views Are Challenged

Pic: US Govt. (PD)

Pic: US Govt. (PD)

Was host Alex Tsakiris being too aggressive and disrespectful towards the good doctor? Or was Dr. Patricia Churchland – Oxford educated, MacArthur Fellowship awarded, highly regarded academic and author of recent you-are-your-brain book Touching a Nerve – simply ill-prepared for her long-standing beliefs, rooted in scientific materialism, to be contested?

LISTEN HERE: DIRECT DOWNLOAD

(Interview and transcript also available over at Skeptiko)… Read the rest

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Are We Hard-Wired To Believe In Life After Death?

spaceface-RAScienceDaily on a study suggesting that the conviction that our souls will survive beyond death is a feeling that emerges intuitively:

Most people believe they are immortal. That is, that part of themselves-some indelible core, soul or essence-will transcend the body’s death and live forever. But why? And why is this belief so unshakable?

A new Boston University study published in Child Development  suggests that our bias toward immortality is a part of human intuition that naturally emerges early in life. And the part of us that is eternal, we believe, is our hopes, desires and emotions.

Researchers have long suspected that people develop ideas about the afterlife through cultural exposure, like television or movies, or through religious instruction. But perhaps, thought Emmons, these ideas of immortality actually emerge from our intuition. Just as children learn to talk without formal instruction, maybe they also intuit that part of their mind could exist apart from their body.

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Signs Of Consciousness Found In Rats Brains After Death

ratsDo rats go to heaven? Via Ghost Theory:

Jim Borjigin of the University of Michigan’s team implanted electrodes on the surface of the brains of nine rats, then injected the animals with potassium chloride, stopping their heart and blood flow. At that point the rats are considered “clinically dead”.

Yet for up to 30 seconds, the researchers’ electrodes detected patterns of synchronized, high-frequency activity known as gamma waves. In humans, some scientists have suggested that gamma waves could play a role in the interplay of perception, awareness, and intent known as consciousness.

“By presenting evidence of highly organized brain activity and neurophysiologic features consistent with conscious processing at near-death, we now provide a scientific framework to begin to explain the highly lucid and realer-than-real mental experiences reported by near-death survivors,” wrote Borjigin’s team.

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Discovery of Quantum Vibrations in ‘Microtubules’ Inside Brain Neurons Supports Controversial Theory of Consciousness

Pic: Zwarck (CC)

Pic: Zwarck (CC)

Fringeology author and DisinfoCast alum Steve Volk (follow him on Twitter here or visit his website here) alerted me to this rather astonishing press release posted at ScienceDaily. Between this and seeing the president state that marijuana isn’t any worse than alcohol on national TV, I’m starting to wonder if I woke up in some sort of amazing new pocket dimension. Wherever I am, I like it.

A review and update of a controversial 20-year-old theory of consciousness published in Physics of Life Reviews claims that consciousness derives from deeper level, finer scale activities inside brain neurons. The recent discovery of quantum vibrations in “microtubules” inside brain neurons corroborates this theory, according to review authors Stuart Hameroff and Sir Roger Penrose. They suggest that EEG rhythms (brain waves) also derive from deeper level microtubule vibrations, and that from a practical standpoint, treating brain microtubule vibrations could benefit a host of mental, neurological, and cognitive conditions.

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Brain Surgery Gives Woman “Hyper Empathy”

mindShould this procedure be made mandatory? Via the Huffington Post:

A woman developed “hyper empathy” after having a part of her brain called the amygdala removed in an effort to treat her severe epilepsy, according to a report of her case.

Doctors removed parts of her temporal lobe, including the amygdala. The surgery is a common treatment for people with severe forms of temporal lobe epilepsy.

After the surgery, the woman reported a “new, spectacular emotional arousal,” that has persisted for 13 years to this date. Her empathy seemed to transcend her body — the woman reported feeling physical effects along with her emotions, such as a “spin at the heart” when experiencing empathic sadness or anger. She reported these feelings when seeing people on TV, meeting people in person, or reading about characters in novels.

She also described an increased ability to decode others’ mental states, including their emotions.

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