Skip to main content

Subscribe to Smithsonian magazine and get a FREE tote.

Brain

Composer Alvin Lucier in 1986

Art Meets Science

Artificial ‘Brain’ Aims to Allow Composer to Keep Making Music Three Years After His Death

Before dying in 2021, Alvin Lucier donated blood for “Revivification,” an installation that generates sound in response to neural signals

Human perception of color is regulated by three types of cone cells in the eye. By artificially stimulating just one type with a laser, researchers and study participants experienced a new color they call "olo."

Scientists Say They’ve Discovered a New Color—an ‘Unprecedented’ Hue Only Ever Seen by Five People

The color, dubbed olo, is described as an intensely saturated teal. Researchers say it might have applications in understanding color blindness

A cell culture plate with pluripotent stem cells, which can differentiate into any kind of cell in the body.

Stem Cell Therapies Could Treat Parkinson’s Disease by Rebuilding Lost Circuitry in the Brain, Studies Suggest

Two small clinical trials tested the safety of injecting stem cells into the brains of Parkinson’s patients and found no adverse effects

A subset of more than 1,000 neurons, representing just a snapshot of the complexity mapped within a cubic millimeter of mouse brain tissue

In a World First, Researchers Mapped Part of a Mouse’s Brain in Incredible Detail. It’s a Leap Forward for Neuroscience

The 3D brain map includes more than 200,000 cells, 523 million synapses and over two miles of axons, representing the most detailed wiring diagram of a piece of mammal brain ever constructed

Many teens have shared videos on social media showing their use of nitrous oxide, or laughing gas, which is sold in small metal canisters.

The Long, Strange History of Nitrous Oxide, a Popular Drug Users Have Been Inhaling for Hundreds of Years

Galaxy Gas has brought the drug back into the spotlight, and scientists are raising alarms about its health risks

Researchers connect stroke survivor Ann Johnson's brain implant to the experimental computer, which will allow her to speak by thinking words.

Enhanced Brain Implant Translates Stroke Survivor’s Thoughts Into Nearly Instant Speech Using Artificial Intelligence

The system harnesses technology similar to that of devices like Alexa and Siri, according to the researchers, and improves on a previous model

More than a third of endometriosis patients are misdiagnosed with mental health conditions.

For Some Women With Serious Physical Ailments, Mental Illness Has Become a Scapegoat Diagnosis

Patients with difficult-to-diagnose conditions like endometriosis are often sent home with diagnoses like anxiety or bipolar disorder

Budgerigars are the only animals known so far to have language-producing centers of neurons akin to those in humans, according to new research.

Can Parrot Brains Teach Us About Human Speech? Study Finds Budgies Have Language-Producing Regions That Resemble Our Own

The parakeets commonly kept as pets could offer fresh clues about vocal learning and potential treatments for speech disorders

Cells producing the NOVA1 protein are shown in green in the brain of a mouse. A specific variant of this protein is unique to humans, and researchers suggest it is linked to spoken language development.

Scientists Identify a Gene Linked to Spoken Language, and It Makes Lab Mice Squeak Differently

A new study suggests the unique human version of the NOVA1 protein developed after our ancestors split from Neanderthals on the evolutionary tree, and it might have given us a competitive edge over our relatives

Mice have an instinctive reaction to hide when the shadow of a bird passes over. In a new study, scientists taught the rodents to overcome that fear.

How Can the Brain Overcome Fear? New Study of Mice Offers Clues to PTSD and Anxiety Treatment

Researchers identified two brain areas in mice that helped the animals learn to suppress their instinctive fears of predators

Nyota, a 25-year-old male bonobo at Ape Initiative in Iowa, participated in the study.

When Bonobos Know What You Don’t, They’ll Tell You. It’s a Sign of a Cognitive Ability Called ‘Theory of Mind’

A first-of-its-kind study suggests bonobos, like humans, can understand someone else’s lack of knowledge—and adjust their actions accordingly

Researchers found higher levels of microplastics in brain tissue than in liver and kidney tissue.

The Human Brain May Contain as Much as a Spoon’s Worth of Microplastics, New Research Suggests

The amount of microplastics in the human brain appears to be increasing over time: Concentrations rose by roughly 50 percent between 2016 and 2024, according to a new study

Hand-drawn illustration of two of the seven sampled molars from Australopithecus

Ape-Like Human Ancestors Were Largely Vegetarian 3.3 Million Years Ago in South Africa, Fossil Teeth Reveal

Scientists suggest meat consumption was pivotal to humans’ development of larger brains, but the transition probably didn’t start with Australopithecus, according to a new study

A vast mosaic of cells, some that are identical and some that are slightly different, make up the human body.

Why Is Every Human Being Riddled With Genetic Errors?

Your body is a collection of cells carrying thousands of genetic mistakes accrued over a lifetime—many harmless, some bad and at least a few that may be good for you

Alzheimer's disease is the most common form of dementia.

U.S. Dementia Cases Are Poised to Rise to One Million Each Year by 2060, According to New Projections

As the American population ages, a new study finds the average lifetime risk of dementia for adults over 55 is around 42 percent—a higher rate than previously thought

The Consumer Electronics Show (CES) 2025 took place in Las Vegas, Nevada, this week.

The Eight Coolest Inventions From the 2025 Consumer Electronics Show

A needle-free injection system, a bug-watching garden camera, a wearable that helps with memory lapses and more were unveiled at the annual Las Vegas trade show

The glymphatic system moves a clear liquid called cerebrospinal fluid around the brain to flush out toxic proteins accumulated during waking hours.

In a Study on Mice, Scientists Show How the Brain Washes Itself During Sleep

The brain’s waste-removal process is “like turning on the dishwasher,” a neurologist says, but common sleep medications may harm it

At the same time as the Romans were building the Colosseum, they were also breathing in high amounts of toxic lead from silver mining and smelting operations.

Ancient Romans Breathed in Enough Lead to Lower Their IQs, Study Finds. Did That Toxin Contribute to the Empire’s Fall?

Using Arctic ice core samples, researchers estimate silver mining and smelting released enough lead during the Pax Romana to cause a 2.5- to 3-point drop in IQ

Researchers calculated that the human brain processes thought at a speed of ten bits per second.

The Speed of Human Thought Is Far Slower Than the Average Wi-Fi, Study Suggests

But the rate that we gather sensory data is 100 million times faster than our thought processes, making our brains champions at filtering information from our chaotic surroundings

Some people are genetically built to require less sleep than the rest of us.

Why Do Some People Thrive on So Little Sleep?

Short sleepers cruise by on four to six hours a night and don’t seem to suffer ill effects

Page 5 of 26