Feeds

Chinese claim world's first ultrasonic frog

That crazy frog

3 Big data security analytics techniques

Scientists have discovered how Amolops tormotus, AKA the concave-eared torrent frog, makes itself heard above the gushing waterfalls of its habitat in east-central China: bat-style ultrasound.

The discovery, detailed in today's issue of journal Nature, makes this particular crazy frog the first non-mammal known to use ultrasonic communication. Researchers have known for several years that the males produce high-pitched, birdlike calls that extend into the ultrasonic range. Whatremained to be tested was whether the sounds were a byproduct of the frog's sound production, or were actually listened to and responded to.

The University of Illinois-UCLA team first wanted to know if the frog can hear very high frequencies. They recorded a male's call, split it into the audible components and ultrasonic components, and observed the responses of eight other males. The behavioural results showed they heard and responded.

The finding was then confirmed by measuring electrical activity in the frog's mid-brain - where sound is processed.

Since most frogs lack the concave-eared torrent frog's ear canal, the researchers say their findings bolster the idea that the canal evolved to detect high frequencies.

The work was part-funded by the US National Institute on Deafness and Other Communication Disorders. Director James F. Battey explained the apparently tenuous link: "The more we can learn about the extraordinary mechanisms that Amolops and other animals have developed to hear and communicate with one another, the more fully we can understand the hearing process in humans, and the more inspired we can be in developing new treatments for hearing loss." ®

Top three mobile application threats

More from The Register

next story
So, just how do you say 'the mutt's nuts' in French?
Vital linguistic question interrupts LOHAN spaceplane mission
95 floors in 43 SECONDS: Hitachi's new ultra-high-speed lift
Guangzhou skyscraper denizens to hold on to hats
Most Americans doubt Big Bang, not too sure about evolution, climate change – survey
Science no match for religion, politics, business interests
KILLER SPONGES menacing California coastline
Surfers are safe, crustaceans less so
LOHAN and the amazing technicolor spaceplane
Our Vulture 2 livery is wrapped, and it's les noix du mutt
Liftoff! SpaceX Falcon 9 lifts Dragon on third resupply mission to ISS
SpaceX snaps smartly into one-second launch window
STEALTHY NANOROBOTS dress up as viruses, prepare to sneak into YOUR BODY
Cloaking techniques nicked from viruses tackle roadblocks on way to medical frontier
Space station astronauts pop outside to replace crippled computer
Speedy space walk by snorkel-equipped spacemen followed by trash day
prev story

Whitepapers

Securing web applications made simple and scalable
In this whitepaper learn how automated security testing can provide a simple and scalable way to protect your web applications.
3 Big data security analytics techniques
Applying these Big Data security analytics techniques can help you make your business safer by detecting attacks early, before significant damage is done.
The benefits of software based PBX
Why you should break free from your proprietary PBX and how to leverage your existing server hardware.
Mainstay ROI - Does application security pay?
In this whitepaper learn how you and your enterprise might benefit from better software security.
Combat fraud and increase customer satisfaction
Based on their experience using HP ArcSight Enterprise Security Manager for IT security operations, Finansbank moved to HP ArcSight ESM for fraud management.