In the wild, the movement of the frog's vocal sacs as they inflate before they croak can be picked up by echolocation, so the bats could use both listening (eavesdropping) and
echolocation for hunting.
It makes sense: Humans have been perfecting sonar for more than a century, but evolution has been honing
echolocation for much, much longer.
Not exact matches
Bats have good eyesight and most use
echolocation (a series of sound waves) to search
for food.
One way to avoid being eaten was to emit
echolocation sounds that were difficult
for killer whales to detect — thus an ability favored by evolution, «concludes Lee Miller and Magnus Wahlberg in their research article.
If only
for a few seconds we could be a bat flying through the darkness with
echolocation or a dolphin way down under the sea using sonar clicks.
Human
echolocation shares some similarities with animal
echolocation, though people use the skill to compensate
for their sight, rather than as an additional sense.
A better understanding of
echolocation may improve methods
for teaching the technique to people who have lost their sight later in life, and yield additional insights into human hearing.
But
for individuals who became impaired later in life,
echolocation training can help them to move through the world with greater independence and safety.
This illusion, thought to be based on the lifter's cognitive expectations, and the fact that it is also present in blind echolocators, but not in blind non-echolocators, shows that
echolocation is an effective form of sensory substitution
for vision.
Dolphins are famous
for their ability to hunt prey via
echolocation.
The results, published in the journal Functional Ecology, show that the bat's
echolocation calls were high in frequency but low in intensity making it difficult
for the insect to detect the imminent danger.
«In effect, the
echolocation of Pallas's long - tongued bats is too quiet
for the moths to hear and allows them to sneak up on their target using a stealth tactic.»
To test the extent to which people can compensate
for this immobility, Wiegrebe and colleagues recruited eight undergraduates with normal vision to don blindfolds and learn some basic
echolocation skills.
Still, neurobiologist Constance Scharff of the Free University of Berlin in Germany notes that to really make the case
for a role of FOXP2 in
echolocation, functional studies are necessary, such as knocking out the gene.
That was also the case
for two kinds of bats and toothed whales, a group that includes dolphins and certain whales, that have converged on a specialized hunting strategy called
echolocation.
It's the first well - documented example of an organism using body shape to confuse predators that use
echolocation, the researchers say — the equivalent of fish and insects that display giant eyespots
for visual trickery.
Hunting bats don't just listen out
for male frogs» mating calls: they can also use
echolocation to detect when the frogs inflate their throat sacs
Most crickets distinguish between mates and predators based on the frequency of sound: male crickets produce low frequency calls to attract females, while bats produce high frequency (ultrasonic) sounds
for echolocation.
The Mexican free - tailed bat sabotages the
echolocation signals of its fellows so that it can home in on their winged prey
for itself
As the bats search
for a place to roost, the structure acts as an acoustic flag, bouncing back the ultrasonic calls the bats emit to navigate (a process known as
echolocation) and waving the bats down to a comfortable home.
These marine mammals have been using
echolocation - bouncing high - frequency sounds off underwater objects - to find prey
for tens of millions of years.
While studying
for graduate school, I worked part - time as Veterinary Technician at an emergency animal clinic, plus I volunteered and started my thesis research on dolphin
echolocation at the John G. Shedd Aquarium in Chicago.
For Dax,
echolocation is so last season — he can project a supersonic wave that can effectively force push objects away from him.
Blind is a narrative - driven psychological thriller
for virtual reality where the player is blind and must explore their surroundings using
echolocation.
Looking at how bats use
echolocation and decoding how it's done is bringing scientists closer to better ways of using sonar
for everything from maneuvering robotic vehicles to finding flaws in building structures.
Lead author Simon Whiteley from the Centre
for Ultrasonic Engineering at the University of Strathclyde, said, «We aim to understand the
echolocation process that bats have evolved over millennia, and employ similar signals and techniques in engineering systems.