Experimental Brain Implant Lets Paralyzed People Communicate by Turning Thoughts Into Text

BrainGate Collaboration
BrainGate Collaboration

People with paralysis could someday use a brain implant to help them communicate their thoughts and carry out everyday tasks. As Engadget reports, a brain-computer interface (BCI) called the BrainGate2 Neural Interface System has enabled three paralyzed people to send texts, buy groceries online, stream music, and even play a virtual piano on a tablet.

The interface was developed by the BrainGate consortium, a team of neuroscientists, engineers, and computer scientists that creates new technologies for people who are paralyzed, have lost a limb, or have a neurologic disease that limits their motor function or speaking ability. Their findings were published in the journal PLOS One.

The three participants in the clinical study are paralyzed and lack the use of their arms. An implant about the size of a baby aspirin pill containing an array of microelectrodes was placed in their motor cortex—the part of the brain responsible for movement. A small sensor was used to record any neural signals associated with moving a limb, which were then decoded and sent to a virtual mouse paired to a tablet via Bluetooth.

In other words, the participants just had to think about moving a cursor on a screen, and the interface did the heavy lifting for them. They were able to type 30 characters per minute and make 22 point-and-click selections per minute.

Similar technologies have been developed in the past, but this one lets people use an off-the-shelf tablet without having to make any modifications, according to Engadget.

A participant plays a virtual piano
BrainGate Collaboration

Although the brain implant technology is still in the experimental stage and is not yet ready for commercial development, several of the study’s authors said the results are promising and could vastly improve the quality of life for people with paralysis.

Stanford University bioengineer and lead author Paul Nuyujukian said in a statement, "One of the participants told us at the beginning of the trial that one of the things she really wanted to do was play music again. So, to see her play on a digital keyboard was fantastic."

[h/t Engadget]

Bizarre New Giant Salamander Species Discovered in Florida

There’s something in the water in Florida, but it’s not the swamp monster locals may have feared. According to National Geographic, scientists have discovered a new species of giant salamander called a reticulated siren, and you can find the 2-foot-long amphibian in the swamps of southern Alabama and the Florida panhandle.

Locals have long reported seeing a creature with leopard-like spots, the body of an humongous eel, and axolotl-like frills sprouting out of the sides of its head, but its existence wasn’t described in scientific literature until now. Researchers from Texas and Georgia recently published their findings in the journalPLOS ONE.

“It was basically this mythical beast,” David Steen, a wildlife ecologist and one of the paper’s co-authors, tells National Geographic. He had been trapping turtles at the Eglin Air Force Base in Okaloosa County, Florida, in 2009 when he caught one of the creatures by chance. After that encounter, the researchers set out to find more specimens.

Colloquially, locals have long been calling the creature a leopard eel. Because the reticulated siren only has two tiny front limbs, it's easy to mistake it for an eel. Its hind limbs disappeared throughout the course of millions of years of evolution, and it also lacks eyelids and has a beak instead of the teeth that are typical of other salamander species.

They belong to a genus of salamanders called sirens, which are one of the largest types of salamander in the world. The second part of the species’ name comes from the reticulated pattern seen on all of the individuals that were examined by researchers. The reticulated siren is also one of the largest vertebrates to be formally described by scientists in the U.S. in the last 100 years, according to the paper.

There are still a lot of unknowns about the reticulated siren. They lead hidden lives below the surface of the water, and they’re thought to subsist on insects and mollusks. Researchers say further study is urgently needed because there's a chance the species could be endangered.

[h/t National Geographic]

A Dracula Ant's Jaws Snap at 200 Mph—Making It the Fastest Animal Appendage on the Planet

Ant Lab, YouTube
Ant Lab, YouTube

As if Florida’s “skull-collecting” ants weren’t terrifying enough, we’re now going to be having nightmares about Dracula ants. A new study in the journal Royal Society Open Science reveals that a species of Dracula ant (Mystrium camillae), which is found in Australia and Southeast Asia, can snap its jaws shut at speeds of 90 meters per second—or the rough equivalent of 200 mph. This makes their jaws the fastest part of any animal on the planet, researchers said in a statement.

These findings come from a team of three researchers that includes Adrian Smith, who has also studied the gruesome ways that the skull-collecting ants (Formica archboldi) dismember trap-jaw ants, which were previously considered to be the fastest ants on record. But with jaw speeds of just over 100 miles per hour, they’re no match for this Dracula ant. (Fun fact: The Dracula ant subfamily is named after their habit of drinking the blood of their young through a process called "nondestructive cannibalism." Yikes.)

Senior author Andrew Suarez, of the University of Illinois, said the anatomy of this Dracula ant’s jaw is unusual. Instead of closing their jaws from an open position, which is what trap-jaw ants do, they use a spring-loading technique. The ants “press the tips of their mandibles together to build potential energy that is released when one mandible slides across the other, similar to a human finger snap,” researchers write.

They use this maneuver to smack other arthropods or push them away. Once they’re stunned, they can be dragged back to the Dracula ant’s nest, where the unlucky victims will be fed to Dracula ant larvae, Suarez said.

Researchers used X-ray imaging to observe the ants’ anatomy in three dimensions. High-speed cameras were also used to record their jaws snapping at remarkable speeds, which measure 5000 times faster than the blink of a human eye. Check out the ants in slow-motion in the video below.

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