"In a stunning discovery that overturns decades of textbook teaching, researchers at the University of Virginia School of Medicine have determined that the brain is directly connected to the immune system by vessels previously thought not to exist." While the article at Sciencedaily.com may be a bit breathlessly excited about it, even the more somber source article in Nature agrees that this "may call for a reassessment of basic assumptions in neuroimmunology"
The Deep Mind of Demis Hassabis - "The big thing is what we call transfer learning. You've mastered one domain of things, how do you abstract that into something that's almost like a library of knowledge that you can now usefully apply in a new domain? That's the key to general knowledge. At the moment, we are good at processing perceptual information and then picking an action based on that. But when it goes to the next level, the concept level, nobody has been able to do that." (previously: 1,2) [more inside]
You invest so much in it, don't you? It's what elevates you above the beasts of the field, it's what makes you special. Homo sapiens, you call yourself. Wise Man. Do you even know what it is, this consciousness you cite in your own exaltation? Do you even know what it's for?Dr. Peter Watts is no stranger to MetaFilter. But look past his sardonic nuptials, heartbreaking eulogies, and agonizing run-ins with fascists (and fasciitis) and you'll find one of the most brilliant, compelling, and disquieting science fiction authors at work today. A marine biologist skilled at deep background research, his acclaimed 2006 novel Blindsight [full text] -- a cerebral "first contact" tale led by a diverse crew of bleeding-edge post-humans -- is diamond-hard and deeply horrifying, wringing profound existential dread from such abstruse concepts as the Chinese Room, the Philosophical Zombie, Chernoff faces, and the myriad quirks and blind spots that haunt the human mind. But Blindsight's last, shattering insight is not the end of the story -- along with crew/ship/"Firefall" notes, a blackly funny in-universe lecture on resurrecting sociopathic vampirism (PDF - prev.), and a rigorously-cited (and spoiler-laden) reference section, tomorrow will see the release of
In this teaching video, Suzanne Stensaas, Ph.D., demonstrates the properties and anatomy of an unfixed brain, showing its squishiness and vulnerability. [WARNING: The video contains graphic images, a human brain from a recent autopsy.]
"Maybe it's a sore point: your field should have an answer (people think you do) but there isn't one yet. Perhaps it's simple to pose but hard to answer. Or it's a question that belies a deep misunderstanding: the best answer is to question the question."
Is Psychometric g a Myth? - "As an online discussion about IQ or general intelligence grows longer, the probability of someone linking to statistician Cosma Shalizi's essay g, a Statistical Myth approaches 1. Usually the link is accompanied by an assertion to the effect that Shalizi offers a definitive refutation of the concept of general mental ability, or psychometric g." [more inside]
NeuroBollocks: Debunking pseudo-neuroscience so you don't have to.
The simulated brain - "First computer model to produce complex behaviour performs almost as well as humans at simple number tasks." [1,2,3,4,5,etc.]
"...Pam agreed to die in order to save her life—and in the process had what is perhaps the most famous case of independent corroboration of out of body experience (OBE) perceptions on record...Pam later said, she felt herself “pop” out of her body and hover above it, watching as doctors worked on her body. Although she no longer had use of her eyes and ears, she described her observations in terms of her senses and perceptions...with considerable accuracy.Near Death, explained. [more inside]
NDE studies [such as these] suggest that after physical death, mind and consciousness may continue in a transcendent level of reality that normally is not accessible to our senses and awareness."
Brain Tumors: symptoms, types, a man who hunts them (and what drives him) and a vivid video of the removal of one.
More evidence of brain plasticity: Some blind people are able to use echolocation to perceive space and objects around them in surprising detail, even though the time differences in echoes necessary to do this are two small to be consciously perceived. An fMRI study by Lore Thaler, Stephen Arnott and Melvyn Goodale revealed that people who are especially adept at this use their calcarine cortex (a.k.a. V1 or primary visual cortex) to process spatial information from the echoes. The original paper. A shorter discussion. (Previously)
Political Orientations Are Correlated with Brain Structure in Young Adults, Ryota Kanai, Tom Feilden, Colin Firth, Geraint Rees. Current Biology - 26 April 2011 (Vol. 21, Issue 8, pp. 677-680) [Full text .pdf]
Political liberalism and conservatism were correlated with brain structure
Liberalism was associated with the gray matter volume of anterior cingulate cortex
Conservatism was associated with increased right amygdala size
Results offer possible accounts for cognitive styles of liberals and conservatives [more inside]
A memoir of living with a brain tumour: "For art critic Tom Lubbock, language has been his life and his livelihood. But in 2008, he developed a lethal brain tumour and was told he would slowly lose control over speech and writing. This is his account of what happens when words slip away." [more inside]
Researchers at MIT's Department of Brain and Cognitive Sciences have identified two "morality centers" of the brain. In two separate experiments, they have shown a correlation between a particular part of the brain and the ability to make moral jusgments related to intent to commit a crime. In one experiment, patients with brain damage in the ventromedial prefrontal cortex of the brain don't consider hypothetical perpetrators to be morally responsible for their actions. In another experiment (noted on NPR today) the researchers showed that they could switch off the moral judgment function by applying a magnetic field to the right temporoparietal junction (TPJ) of the brain. The TPJ has also been implicated in "out of body experiences", both in cases of brain damage and by artificially stimulating the area.
This article, about differences between male and female brains, is doing the rounds on various blogs. (I found it via reddit.) Meanwhile, debunkers are doing their best to rip the author a new asshole.
Does american football unavoidably lead to brain damage over time? Does a culture favoring perseverance at the expense of well being begin in high school?
We've discussed trepanation, the boring of holes in the head as practiced in antiquity and by a fringe do it yourself-ers, before. There now seems to be research indicating that the procedure may have medical merit, and even help stave off age related cognitive decline. This curious research brought to you by the Beckly Foundation which "promotes the investigation of consciousness and its modulation from a multidisciplinary perspective" and has a sweet logo.
Henry G. Molaison, known to psychology and neurology students worldwide as "H.M.", dies. Previously.
Exactly how mental maturity develops—and the anatomy responsible for its emergence—is being revealed.
[scifilter] Scientists use a supercomputer to simulate a biological neural structure "as big and as complex as half of a mouse brain"
Typing with your brain. A new device, picture d here, allows people to type with only their thoughts, though only slowly. Add this to the monkey-brain controlled robot arm (avi), and the soon-to-be commercially available BrainGate implant, [previously], and you've got, well, an interesting future...
Rock n Roll! We know that Sex and Drugs ain't good for us, but researchers at McGill University are using very fancy devices to learn how our brains react to music. (Probably not much to discuss, but it's an interesting article)
Tumor-induced Pedophilia - the BBC reports on an american man who, at the age of 40, developed completely uncontrollable and ammoral sexual impulses after developing a tumor in the right lobe of the orbifrontal cortex. After the tumor was removed, he returned to normal. More inside...
The discovery of mirror neurons in the frontal lobes of monkeys, and their potential relevance to human brain evolution — which I speculate on in this essay — is the single most important "unreported" (or at least, unpublicized) story of the decade. I predict that mirror neurons will do for psychology what DNA did for biology: they will provide a unifying framework and help explain a host of mental abilities that have hitherto remained mysterious and inaccessible to experiments.
(after you read the essay, you might be interested in the responses.)
(after you read the essay, you might be interested in the responses.)