The myth is that brain aging is one slow downhill slide, like a retirement account invested entirely in bad decisions. This paper says no: the brain's communication cables do not all mature, peak, or decline together. Some routes hit stride early, some improve into adulthood, and some charge...
We still don't know how the brain turns a messy intention - I want to make this shape - into a clean sequence of movements. But this paper gets us closer. And honestly, it does so with monkeys that "draw," which is already a stronger opening than most neuroscience gets.
Consider this: the bit of cortex helping you recognize a voice is only a few millimeters thick, folded into the side of your brain like a receipt in your pocket. Inside that tiny acoustic marketplace, neurons trade clues: pitch, timbre, breathiness, accent, rhythm, all the vocal price tags that...
Here is the hard part about writing this one. The study is built on conditional value at risk, Bayes-adaptive Markov decision processes, and hazard functions, which is roughly the vocabulary you would use to scare someone away from a dinner party. None of those phrases want to be friendly. But...
A flock of starlings and a school of herring solve the same problem in the same way. Both hold a coherent shape across the sky or the sea while no single member stays put. Birds swap positions, fish trade places, and yet the murmuration keeps its silhouette and the school keeps its glittering wall....
Here's a party trick: tell someone that Anna is taller than Beth, and that Beth is taller than Carol. Then ask who's taller, Anna or Carol. They'll answer instantly, even though you never once put Anna and Carol back to back. Your brain just quietly stitched two facts into a conclusion you were...
Picture two retina scientists at a whiteboard. One says, "A synapse is a synapse - calcium comes in, vesicles fire, signal sent, done." The other crosses her arms: "Then why do they all look so different under the microscope?" For years that argument had no clean answer, because nobody could...
While you are breathing, right now, your lungs are running a tiny border-control desk: filtering air, soothing irritation, and trying not to panic every time dust wanders in like it has a backstage pass. Sensory nerves sit inside that system watching for danger. Usually, useful. But in a new Cell...
There was a crime scene, and the body of evidence was incomplete. For decades, neuroscientists charting the brain's wiring have produced gorgeous maps of the long-distance cables running cortex-to-cortex - the superhighways everyone photographs. But the deep interior tracts, the ones connecting the...
We still don't know exactly how one brain region tells another what to learn. The brain is, after all, a wet democracy of roughly 86 billion cells, none of whom were elected, all of whom have opinions. But a new study in eLife gets us a little closer, and it does so by catching the cerebellum doing...
A scientist leans over a computer, watching simulated neurons twitch themselves into organized nonsense, which is one of those lab activities that sounds suspiciously like getting a family group chat to agree on brunch. The goal is not chaos for chaos's sake. In a new eLife paper, Ching Fang and...
Not a bigger brain network. Not a hidden mini-committee of neurons. Not some magical AI dust sprinkled on the striatum. The real answer, according to a new modeling study, is weirder and more fun: a single neuron may be able to do a job we usually assign to a whole crowd - if its dendrites get a...
Boomers might call it courtship, millennials might call it mixed signals, and Gen Z would probably just say the vibe is complicated. Fruit flies, meanwhile, have turned romance into a full-contact tactical sport for millions of years. A new paper shows that when those mating moves evolve, the brain...
A storm doesn't announce itself with a single thunderclap. It rolls in as a thousand small signals: a drop in pressure, a shift in the wind, the particular hush before the rain. Your body reads its own weather the same way. Right now, without looking, you know where your hand is. You know your foot...
So here's what nobody tells you about the male and female brains we've been comparing for decades: a lot of the differences we so confidently catalogued may have been less about how those brains learn and more about how their owners pace the room before the lesson even begins. A new study in eLife...
I have good news and bad news about the little molecular machine keeping every one of your neurons in the game.
The weird clue in this paper is the title: "interlaminar signal flow" sounds less like science and more like plumbing for a layer cake. Which is not a terrible metaphor. Zhu and colleagues used Neuropixels probes in macaque primary visual cortex, or V1, to ask how signals move between layers when...
Here is something that should not be true but absolutely is: guilt and shame feel like the same horrible thing, and yet they are not the same thing at all. You stub your conscience on a friend's feelings, you get that hot squirmy dread, and you file the whole experience under "I feel bad." But your...
Somewhere back in the primate playbook, evolution made a bet. It decided that an animal swinging through wet branches at 3 a.m. needed more than dumb, smooth pads on its hands. It needed grip. It needed to feel the difference between a sturdy branch and a rotting one before committing its whole...
How fast can one tiny cell pass a note? Very fast. In your ear and eye, some cells do not get to loaf around and send occasional postcards - they have to keep a steady stream of information moving with near-watchmaker timing, millisecond by millisecond, or the whole signal turns to mush.
