popneurologytumbling

A cortical homRUNculus made by http://zageris.tumblr.com

Tue, 05 Mar 2013 00:05:54 -0600

A cortical homRUNculus made by http://zageris.tumblr.com

fuckyeahneuroscience: What Neuroscience Really Teaches Us, and...

Sat, 08 Dec 2012 08:15:59 -0600

What Neuroscience Really Teaches Us, and What It Doesn’t

In the early nineteen-nineties, David Poeppel, then a graduate student at M.I.T. (and a classmate of mine)—discovered an astonishing thing. He was studying the neurophysiological basis of speech perception, and a new technique had just come into vogue, called positron emission tomography (PET). About half a dozen PET studies of speech perception had been published, all in top journals, and David tried to synthesize them, essentially by comparing which parts of the brain were said to be active during the processing of speech in each of the studies. What he found, shockingly, was that there was virtually no agreement. Every new study had published with great fanfare, but collectively they were so inconsistent they seemed to add up to nothing. It was like six different witnesses describing a crime in six different ways.

This was terrible news for neuroscience—if six studies led to six different answers, why should anybody believe anything that neuroscientists had to say? Much hand-wringing followed. Was it because PET, which involves injecting a radioactive tracer into the brain, was unreliable? Were the studies themselves somehow sloppy? Nobody seemed to know.

And then, surprisingly, the field prospered. Brain imaging became more, not less, popular. The technique of PET was replaced with the more flexible technique of functional magnetic resonance imaging (fMRI), which allowed scientists to study people’s brains without the use of the risky radioactive tracers, and to conduct longer studies that collected more data and yielded more reliable results. Experimental methods gradually become more careful. As fMRI machines become more widely available, and methods became more standardized and refined, researchers finally started to find a degree of consensus between labs.

Meanwhile, neuroscience started to go public, in a big way. Fancy color pictures of brains in action became a fixture in media accounts of the human mind and lulled people into a false sense of comprehension. (In a feature for the magazine titled “Duped,” Margaret Talbot described research at Yale that showed that inserting neurotalk into a papers made them more convincing.) Brain imaging, which was scarcely on the public’s radar in 1990, became the most prestigious way of understanding human mental life. The prefix “neuro” showed up everywhere: neurolaw, neuroeconomics, neuropolitics. Neuroethicists wondered about whether you could alter someone’s prison sentence based on the size of their neocortex.

And then, boom! After two decades of almost complete dominance, a few bright souls started speaking up, asking: Are all these brain studies really telling us much as we think they are? A terrific but unheralded book published last year, “Neuromania,” worried about our growing obsession with brain imaging. A second book, by Raymond Tallis, published this year, invoked the same term and made similar arguments. In the book “Out of our Heads,” the philosopher Alva Noë wrote, ”It is easy to overlook the fact that images… made by fMRI and PET are not actually pictures of the brain in action.” Instead, brain images are elaborate reconstructions that depend on complex mathematical assumptions that can, as one study earlier this year showed, sometimes yield slightly different results when analyzed on different types of computers.

Last week, worries like these, and those of thoughtful blogs like Neuroskeptic and The Neurocritic, finally hit the mainstream, in the form of a blunt New York Times op-ed, in which the journalist Alissa Quart declared, “I applaud the backlash against what is sometimes called brain porn, which raises important questions about this reductionist, sloppy thinking and our willingness to accept seemingly neuroscientific explanations for, well, nearly everything.”

Quart and the growing chorus of neuro-critics are half right: our early-twenty-first-century world truly is filled with brain porn, with sloppy reductionist thinking and an unseemly lust for neuroscientific explanations. But the right solution is not to abandon neuroscience altogether, it’s to better understand what neuroscience can and cannot tell us, and why.

Today I’m teaching sketch comedy and the theme is brains....

Wed, 27 Jun 2012 10:28:11 -0500

Today I’m teaching sketch comedy and the theme is brains. Let’s get hilarious.

Paralyzed Man Regains Hand Function after Breakthrough Nerve Rewiring Procedure

Fri, 18 May 2012 15:05:00 -0500

Paralyzed Man Regains Hand Function after Breakthrough Nerve Rewiring Procedure:

fuckyeahneuroscience:

A man who had been paralyzed from the waist down and had lost all function in both his hands can move his fingers after doctors rewired his nerves to bypass the damaged ones in a pioneering surgical procedure, according to a case study published on Tuesday.

The 71-year-old man, who had become paralyzed after he was injured in a car accident in 2008, still had limited arm, elbow and shoulder movement, but because the C7 vertebrae in his spinal cord had been crushed, the nerve circuits responsible for sending signals from the brain to the muscles in his hands were severed and all control was lost.

However, the nearby nerves had not been injured in the accident and surgeons were able to cut an undamaged nerve in the man’s elbow and connect it to the damaged nerve responsible for activating muscles in the hand responsible for grasping objects.

“The circuit [in the hand] is intact, but no longer connected to the brain,” Surgeon Ida Fox, an assistant professor of plastic and reconstructive surgery at Washington University, explained to the BBC. “What we do is take that circuit and restore the connection to the brain.”

Original case report in the Journal of Neurosurgery here.

I like this design. I want my brain to feel like this one!

Fri, 04 May 2012 12:14:43 -0500

I like this design. I want my brain to feel like this one!

Dirty nerdy tshirt design. A going away gift I adored from the...

Thu, 03 May 2012 13:16:50 -0500

Dirty nerdy tshirt design. A going away gift I adored from the Pike Place Market. More info here … www.popneurology.com/wordpress

another pretty brain (it is mine!). isn’t she so cute.

Thu, 19 Apr 2012 11:37:31 -0500

another pretty brain (it is mine!). isn’t she so cute.

prettty brain from a slide show of art and science at...

Thu, 19 Apr 2012 11:34:48 -0500

prettty brain from a slide show of art and science at …
http://www.huffingtonpost.com/2012/03/16/seeing-ourselves_n_1332228.html?ref=art-meets-science#s765203

Brain. Food.

Thu, 01 Dec 2011 21:41:44 -0600

Brain. Food.

fuckyeahneuroscience: Haha, not exactly neuroscience but I...

Tue, 18 Oct 2011 22:49:41 -0500

fuckyeahneuroscience:

Haha, not exactly neuroscience but I laughed. Brain memes!

bruisedlimbs: “Erna and Hrefna are eleven-year-old identical...

Fri, 27 May 2011 17:20:47 -0500

bruisedlimbs:

“Erna and Hrefna are eleven-year-old identical twins from Iceland. I started to photograph them when they were nine years old in 2009, and this will be an ongoing project until they are sixteen years old. I will visit them every year. My intention for this project is to capture the very precious period of their growth from child to teenager, physically as well as psychologically. The relationship between identical twins is an interesting subject matter. I often hear that identical twins have telepathic connections. This is true of Erna and Hrefna. They are always together. They almost never fight with each other. Spending time with them, I feel such comfort in their companionship but at the same time I feel strange because I have never seen such a powerful connection between any two human beings. They say to me, ‘From time to time, we dream the same dreams.’”

Photo

Thu, 21 Apr 2011 11:05:35 -0500

fuckyeaholiversacks: By Austin Kleon, inspired by Oliver...

Sun, 10 Apr 2011 18:44:56 -0500

fuckyeaholiversacks:

By Austin Kleon, inspired by Oliver Fucking Sacks.

Photo

Sun, 10 Apr 2011 18:44:16 -0500

Photo

Sun, 10 Apr 2011 11:06:00 -0500

"My religion is nature. That’s what arouses those feelings of wonder and mysticism and gratitude in..."

Sat, 02 Apr 2011 19:57:01 -0500

“My religion is nature. That’s what arouses those feelings of wonder and mysticism and gratitude in me.”

- Oliver Fucking Sacks (via fuckyeaholiversacks)

thanks mikebalzer.tumblr.com for the logo

Sat, 02 Apr 2011 19:46:36 -0500

thanks mikebalzer.tumblr.com for the logo