There's a new paper out suggesting that ladies' brains are different from mens' (in ways that support Western stereotypes of gender behavior, natch). It's pretty flawed
and has been heavily critiqued
, but one critique surprised me — turns out, there's evidence that men tend to move more than women do when you put them in an MRI machine, something that could throw off any attempt to compare MRI data
between men and women.
Brainwashed: The Seductive Appeal of Mindless Neuroscience is a smart and sometimes devastating critique of "neurobollocks" -- the propensity for using brain-science (and, particularly, brain imaging) to reductively explain human motivation. The authors, Sally Satel and Scott O. Lilienfeld, are a psychiatrist and a psychologist (respectively) and so it's hard not to suspect that there's a little professional rivalry at play here, but they present a compelling argument nonetheless -- a picture of promising science oversold in the name of winning grants, winning court cases, and, at the worst, duping the gullible.
Read the rest
This video was made by the University of Utah Brain Institute to teach medical students about what a brain looks and feels like before it gets preserved in formalin and takes on the texture of a hard rubber ball.
The big takeaway message: Your brain is seriously squishy. So squishy, in fact, that a finger can dent it. As professor Suzanne Stensaas explains, this is one of the reasons why cerebrospinal fluid is so important. Your brain has to float in that fluid. If it didn't, it would come to rest against the side of your hard skull and quickly end up deformed.
Seriously, this is a fascinating (if extremely graphic) video. (Hilariously, given that fact, it opens with an image of a student eating.) Definitely worth watching!
The first of four studies on a poorly-understood link between sleep quality and depression indicates that when antidepressant medication and insomnia therapy are used together
, recovery from depression is more thorough, and faster. (Thanks, Miles O'Brien)
This seems like it has the potential to be pretty cool. Frontiers in Neuroscience for Young Minds
is a new scientific journal that will have kids — ages 8 to 18 — on the editorial review board. The goal: Mentor kids in the process of how science works while simultaneously engaging scientists with questions and comments by the people who are the subject of their research, questions they might not ever hear otherwise.
Researchers at the University of Washington scanned the brains of volunteers listening to one of several simple songs. Based on the neural activity they saw, the scientists were able to identify what song the subjects were hearing. Psychology professor Geoff Boynton presented the results of their study at this week's Neuroscience 2013 conference. (via New Scientist)
Photograph via National Geographic, by Graeme Shannon
A recent study investigated the impact of culling and relocation on elephant decision-making and cognition decades later. African elephants are highly intelligent and social creatures, and rely on their sophisticated communication skills to survive in the wild. How does the trauma of being separated from "loved ones" and their native terrain change how orphaned elephants think, and cope?
From a recent National Geographic article by Christy Ullrich Barcus:
Read the rest
Across the United States, politicians are passing laws limiting abortion that are based on the idea that a fetus can feel pain after 20 weeks gestation. But the science underlying this assertion is a lot more complex than it's made out to be
. Most scientists don't think fetuses have the neural circuitry to experience pain until later. And the scientists whose research is most often cited as evidence of fetal pain at 20 weeks don't think their work is saying what anti-abortion activists think it does.
EDW Lynch of Laughing Squid says: "Sleight-of-hand artist and master pickpocket Apollo Robbins demonstrates the art of misdirection on an unlucky volunteer in this entertaining TED talk from TEDGlobal 2013."
If somebody tells you an ostensible fact about human behavior or human thought and shows you a picture of an fMRI at the same time, are you more likely to believe what you've just been told
? There's a debate within science right now about whether people are more easily lead astray by brain imaging, or whether those rainbow pictures of the mind affect our thinking much at all. Some studies show one result. Some show another. At Scientific American Mind, Jay Van Bavel and Dominic Packer explain why both sides might be right in this fight. It's a neat reminder that answers aren't always binary.
The artificial sweetener Splenda was discovered
when a chemistry grad student misunderstood his advisor's instructions to "test" a compound and tasted it, instead. (This piece at Scientific American focuses on how the brain responds to, and is changed by, sweeteners.)
If you look at this wheel out of your peripheral vision, you should see it flicker or strobe a bit. (To me, it almost looks like a fast pulsating motion, coming from the center of the wheel.) And that's neat. Optical illusions are usually pretty neat.
But, as the blogger Neuroskeptic writes, there's some reason to think that what you're seeing might be something even more awesome than just your brain being misled. A study published this month in The Journal of Neuroscience suggests that the flickering is actually a visual representation of the rhythmic alpha waves that are constantly pulsating through your brain.
Read the rest
Creativity is actually more than one thing, it happens in many different parts of your brain, and it is DEFINITELY NOT confined to the brain's right hemisphere. At Beautiful Minds, Scott Barry Kaufman talks about the complex processes that get glossed over in our pop-sci understanding of creative thinking
. It's a good companion to the story I wrote here last week
about why the idea of "fear" is also more complex than we give it credit for.
Moheb Costandi has written two amazing profiles
on psychologist Elizabeth Loftus
, a researcher who has challenged the way we rely on memory in the courtroom and fought against attempts to legitimize "recovered" memories. Hugely controversial — she's received death threats from people who blame her for setting criminals free — Loftus' story isn't purely about science vs. emotion. In fact, Costandi writes, in her efforts make our concept of memory more evidence based, Loftus might be glossing over the rare and the weird-but-real.
New revelations about your brain’s so-called “fear center” explain why it’s misleading to say “this part of the brain does x”. Maggie Koerth-Baker
talks to neuroscientist Paul Whalen and learns that there’s more to fear than fear, itself. Read the rest
The complicated process
that allows your brain to quickly cancel an order and replace it with another.
Jalees Rehman has an interesting neuroscience essay on 3Quarksdaily
about the three second rule of temporal perception and processing in the human brain.
"It is comparatively easy to measure the thresholds that our brain uses to create temporal structure, i.e. the minimum time interval required to correctly tell apart the sequence of brief sounds or images," he writes--that's measured in the milliseconds.
Read the rest