The basic “scaffolding” for the vertebrate brain has been found in an unexpected distant relative: a marine worm, a new study reports. The worm’s brain is much simpler than that of even the simplest vertebrates – but it contains three signaling centers almost identical to those found in the brains of vertebrate embryos. I leaped up and did a happy dance when I read this news, because it’s a clue to one of the greatest mysteries in neuroscience today. See, for most of science history, evolutionary biologists have found the vertebrate brain to be pretty enigmatic. The closest relatives of … Continue reading The Worm Did It!
Just a minute of physical exertion can seriously impair a person’s memory of the threat that triggered it, says a new study. When we undergo a strenuous task, such as a chase or a fight, immediately after witnessing an event, we have much less ability to remember the event’s details than if we’d taken time to process what we’ve seen. This calls the concept of eyewitness testimony into serious question. As I’ve written here and Jonah Lehrer has written here, our memories aren’t nearly as static as we might like to think. In fact, each time we recall a memory, … Continue reading Mixed-Up Memories
On the second Connectome podcast, I muse about three of the hottest topics in neuroscience today: what “consciousness” might be, how it relates to dreams, and how drugs can play some strange tricks on that relationship. Click here to play or download: If the SoundCloud link doesn’t play, you can download the original mp3. Enjoy, and feel free to email us questions and suggestions for next time! (Produced by Devin O’Neill at The Armageddon Club) Continue reading “Consciousness, Dreams & Drugs” — Podcast 2
Having trouble remembering where you left your keys? You can improve with a little practice, says a new study. It’s an idea that had never occurred to me before, but one that seems weirdly obvious once you think about it: people who train their brains to recall the locations of objects for a few minutes each day show greatly improved ability to remember where they’ve left things. No matter what age you are, you’ve probably had your share of “Alzheimer’s moments,” when you’ve walked into a room only to forget why you’re there, or set something down and immediately forgotten … Continue reading Forget Me Not
So you’re stuck in that mid-week slump…the weekend lies on the other side of a scorching desert of work, and you have no canteen because you gave up water for Lent (in this metaphor, “water” refers to alcohol…just to be clear). But fear not! Neuroscience knows how to cheer you up! Nope, this isn’t another post about sex or drugs…though those are coming soon. This one’s about five things science says you can do right now – with your mind – to chase your cranky mood away. 1.Take a look around Research shows that people who focus on the world around … Continue reading 5 Ways to Fight the Blues…with Science!
A brain area that’s specialized to recognize faces has a unique structure in each of our brains – and mapping that area’s connectivity patterns can tell us how each of our brains use it, says a new study. The fusiform gyrus in the temporal lobe plays a part in our recognition of words, numbers, faces, colors, and other visual specifics – but it’s becoming increasingly clear that no two people’s fusiform gyrus structure is identical. By studying this region in a larger connectomic framework, though, researchers can now predict which parts of a certain person’s fusiform gyrus are specialized for … Continue reading Saving Faces
Scientists have discovered direct neural correlates of synesthesia, a new study reports. Not only have they detected activation patterns corresponding to synesthesic activity (such as “seeing” certain colors when thinking of certain numbers or sounds) – they’ve isolated an actual functional difference in the brains of synesthesic people. And what’s more, they’ve discovered a way to crank up synesthesic activity. Let’s break this down and talk about what they’ve done here. To understand what’s going on, let’s take a quick glance at history. Synesthesia’s fascinated artists and scientists since way back – in fact, the first people to write about it were the … Continue reading The Colors, Man! The Colors!