Neuroscientists shed light on differentiating sonar used by bats

neuroscientists shed light on differentiating sonar used by bats bat

Researchers at Brown University have released findings in Science that explain how, amid a flurry of trees, bushes, debris and other bats, a single bat can hone in on a target and remain locked during chase. Bats hunt at night and thus rely on sonar to sound their way through the dark; their eyes are not believed to be of much use.

As scientists learn more, the developments will inform how we can install better navigation systems in vehicles that are sonar-led.

Bats are able to navigate through the clutter due to an ability to discern extremely small differences in a sea of noise. As you may have noticed in any creepy movie, when a bat hunts, it’s constantly chirping—or more exactly, sending out sound waves. Those sound waves return to the bat altered in some way due to the manner in which it reflected off surrounding objects.

A change in amplitude (sound intensity) of less than 1.5 decibels, a difference no human could dream of perceiving, informs the flying hunter what is background and what is target. The researchers make the analogy that it is as if that bat were utilizing two screens: one that simply watches the target, the second that watches the surroundings and avoids them.

Strangely, but perhaps obviously, this is much how our eyes work when we watch a moving object. We know how to focus based on the color patterns our eyes receive, while filtering out the peripherals—yet being aware of them. Bats just appear to do it with sound, instead of light.

Product Review

'Hitman 2' goes in for the kill with more of everything you love

IO Interactive and Warner Bros introduce us to ‘Hitman 2’, a sequel that embraces what made the series so unique and exceeds at delivering a more polished and complex experience.
Movies & TV

The best shows on Netflix, from 'The Haunting of Hill House’ to ‘The Good Place’

Looking for a new show to binge? Lucky for you, we've curated a list of the best shows on Netflix, whether you're a fan of outlandish anime, dramatic period pieces, or shows that leave you questioning what lies beyond.
Emerging Tech

Stronger than steel, thinner than paper, graphene could be the future of tech

Since its discovery, graphene has set the research world on fire. What exactly is it, though, and what could it mean for the future of tech? Here's everything you need to know about what could be the next supermaterial to take center stage.
Gaming

Your PlayStation 4 game library isn't complete without these games

Looking for the best PS4 games out there? Out of the massive crop of titles available, we selected the best you should buy. No matter what your genre of choice may be, there's something here for you.
Emerging Tech

In a weighty decision, scientists prepare to redefine the kilogram

Metrologists are meeting at the General Conference on Weights and Measures in Versailles to vote on whether to redefine the kilogram as a constant that can be observed in the natural world.
Photography

See the National Forests like never before in these awe-inspiring drone videos

What's the difference between a National Park and a National Forest? Drones. With no ban on drones in National Forests -- at least, not yet -- filmmakers have a way to capture the immensity of these locations with stunning results.
Emerging Tech

Google’s balloon internet is coming to Kenya in 2019

In order to bring the internet to those who lack it, a company called Loon is launching balloons into the stratosphere. From more than 12 miles up, these balloons beam connectivity over a large area on the ground.
Emerging Tech

Hikers missing on Mount Fuji could soon find a drone buzzing above their heads

Hikers who go missing while climbing Japan's highest mountain could soon find a drone buzzing above their head. A new system using the flying machines has been set up on Mount Fuji for future search-and-rescue missions.
Emerging Tech

Elon Musk receives FCC approval to launch over 7,500 satellites into space

Not surprisingly, SpaceX is thinking big with Starlink, its space-based global broadband network. This week, the company received FCC approval to launch 7,518 satellites into a low-Earth orbit for its satellite internet service.
Cars

The world’s first 3D-printed titanium wheels are so intricate they look fake

HRE Performance Wheels and GE Additive have teamed up to create the world's first 3D-printed titanium wheels. They are not only impressively durable, but extremely lightweight as well.
Emerging Tech

Of all the vape pens in the world, these 5 are the best

Vaping concentrates has become significantly more popular, especially among those that use cannabis for medicinal purposes. But don’t use just any vape pen: we found these five devices to be our favorites in 2018.
Emerging Tech

DJI Mavic 2 Pro vs Mavic 2 Zoom: What’s the real difference?

DJI's Mavic 2 series drones are ready to fly -- but which one is right for you? The Mavic 2 Pro and Mavic 2 Zoom are nearly identical save for their cameras. Here's what you need to know about these powerful new UAVs.
Emerging Tech

This startup will sequence your entire genome for free — but there’s a catch

Want to get your DNA sequenced but don’t want to shell out the hundred bucks or so to do so? A new startup called Nebula Genomics offers you the opportunity to have it done for free.
Emerging Tech

Here’s all the best tech gear and gadgetry that survived Shark Tank

The television show "Shark Tank" has churned out quite a few strange, interesting, and downright awesome products -- so we rounded up some of the best ones for your perusal. Enjoy!