One reason sleep is so important: It's the time when your brain "cleans house"
, collecting and disposing of the waste products that build up in your head during the day. — Maggie
In a review of scientific research on the subject of handedness and intelligence, researchers found that neither lefties nor righties came out ahead. Instead, the people with the biggest boost in cognitive performance were the folks who weren't heavily wedded to a single hand. The more ambidextrous subjects were, the better they performed on tests of cognitive skills
. — Maggie
"[Video Link] University of Washington researchers have performed what they believe is the first noninvasive human-to-human brain interface, with one researcher able to send a brain signal via the Internet to control the hand motions of a fellow researcher." (Thanks, Jake Dunaganan!)
At The Verge, Carrie Arnold writes about a scientist who thinks that our intestinal bacteria could have an influence on mental health
. It's not proven, but it's not a totally crazy idea, either, and there's some good evidence supporting the connection. The catch: Even if what's happening in your gut affects what is happening in your head, there might not be much we can do change the mental health outcomes. — Maggie
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. — Maggie
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. — Maggie
It would take a simple experiment to prove, once and for all, what causes "brain freeze". Unfortunately/fortunately the condition isn't particularly serious, so nobody has ever gotten a grant to perform that simple study
. — Maggie
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.
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"Baader-Meinhof phenomenon": That's the colloquial name for a funny thing that happens when your brain collides with popular culture
. You know how sometimes you'll hear about something for the first time — a new ukelele duo, perhaps, or a scientist whose work you weren't previously familiar with, or some obscure underground subculture ... Boing Boing is full of opportunities for the Baader-Meinhof phenomenon to kick in — and then, suddenly, that new-to-you thing seems to be everywhere
? That's what we're talking about. Scientists call it the frequency illusion and Pacific Standard
magazine helpfully explains how it works. — Maggie
Your memories can be manipulated and changed
. In fact, this happens often. And you're the one doing it to yourself. — Maggie
Here are a couple different perspectives on the big news out of Washington this afternoon — an ambitious Obama Administration proposal to appropriate $100 million to begin a project to "map the brain". What's that mean? We have a lot of good data on single neurons. We have a lot of good data on what happens in the brain, as a whole, during certain tasks. What we don't really understand is how those individual neurons work together as networks or what activity in the brain really means on the level of causality and processing. That's what this project would be aimed at understanding. At LiveScience, Stephanie Pappas puts the project into scientific (and financial) context
. At Nature News, Meredith Wadman writes about why some scientists are wary of this plan
. — Maggie
At Wired, Ed Yong has an incredible long-read story about the researchers who are figuring out how and why individual animals sometimes turn into groups operating on collective behavior
. That research has implications far beyond the freakish, locust-filled laboratories where Yong's story begins. Turns out, bugs and birds can teach us a lot about the brain, cancer, and even how we make predictions about our own futures. — Maggie
This review also appears on Download the Universe, a group blog reviewing the best (and worst, and just "meh") in science-related ebooks and apps.
When I go to science museums, I like to press the buttons. I'm convinced this is a special joy that you just do not grow out of. Hit the button. See something cool happen. Feel the little reward centers of your brain dance the watusi.
But, as a curmudgeonly grown-up, I also often feel like there is something missing from this experience. There have definitely been times when I've had my button-pushing fun and gotten a few yards away from the exhibit before I've had to stop and think, "Wait, did I just learn anything?"
Science museums are chaotic. They're loud. They're usually full of small children. Your brain is pulled in multiple directions by sights, sounds, and the knowledge that there are about 15 people behind you, all waiting for their turn to press the button, too. In fact, research has shown that adults often avoid science museums (and assume those places aren't "for them") precisely because of those factors.
Sound Uncovered is an interactive ebook published by The Exploratorium, the granddaddy of modern science museums. Really more of an app, it's a series of 12 modules that allow you to play with auditory illusions and unfamiliar sounds as you learn about how the human brain interprets what it hears, and how those ear-brain interactions are used for everything from selling cars to making music.
Read the rest
The Rotating Snake Illusion is a fun image that makes your brain perceive motion where no motion actually exists. Psychologists understand the factors that make an illusion like this work (and work better) — for instance, breaking up and staggering the colored lines that radiate from the center of the circle creates a much stronger sensation of movement. But they don't know exactly why it works yet, according to Japanese psychologists Akiyoshi Kitaoka and Hiroshi Ashida.
And that brings us to this kitten video.
YouTube user Rasmus posted a video that he thinks might show his cat being tricked by the same sense of motion that catches the eyes of humans who look at The Rotating Snake Illusion. On the other hand, this just might be a cute video of a kitten attacking a piece of paper — which is known to happen.
So here's the challenge: Try it on your cat. You can print it off here. Then, report back here and/or post video responses to YouTube. Let's gather some data!
This is not exactly the soundest experimental methodology ever, but it sure would be interesting to see what happens.