Results 31 to 40 of about 2,249 (202)
Rapid jamming avoidance in biosonar [PDF]
Proceedings of the Royal Society B: Biological Sciences, 2006 The sonar systems of bats and dolphins are in many ways superior to man-made sonar and radar systems, and considerable effort has been devoted to understanding the signal-processing strategies underlying these capabilities. A major feature determining the efficiency of sonar systems is the sensitivity to noise and jamming signals.
Erin H, Gillam +2 more
openaire +2 more sources
Functional Analyses of Peripheral Auditory System Adaptations for Echolocation in Air vs. Water
Frontiers in Ecology and Evolution, 2021 The similarity of acoustic tasks performed by odontocete (toothed whale) and microchiropteran (insectivorous bat) biosonar suggests they may have common ultrasonic signal reception and processing mechanisms.
Darlene R. Ketten +7 more
doaj +1 more source
eLife, 2021 How fast the brain and muscles can respond to information about prey location constrains visual and echolocating predators in similar ways.
Alexander J Werth, Joseph E Corbett
doaj +1 more source
Effects of Recreational Boats on Harbour Porpoise Swimming Speed and Surfacing Interval Investigated by Two Synchronised UAVs. [PDF]
Ecol EvolThis study examines the impact of speed and proximity of recreational boats on the swimming speed and surfacing interval of one of the most common coastal cetacean species, the harbour porpoise (Phocoena phocoena), using data collected by unmanned aerial vehicles (UAVs) in a key habitat for the vulnerable Belt Sea population.
Till J +4 more
europepmc +2 more sources
Oilbirds produce echolocation signals beyond their best hearing range and adjust signal design to natural light conditions [PDF]
Royal Society Open Science, 2017 Oilbirds are active at night, foraging for fruits using keen olfaction and extremely light-sensitive eyes, and echolocate as they leave and return to their cavernous roosts. We recorded the echolocation behaviour of wild oilbirds using a multi-microphone
Signe Brinkløv +2 more
doaj +1 more source
Acoustic behavior of melon-headed whales varies on a diel cycle. [PDF]
, 2015 Many terrestrial and marine species have a diel activity pattern, and their acoustic signaling follows their current behavioral state. Whistles and echolocation clicks on long-term recordings produced by melon-headed whales (Peponocephala electra) at ...
Baumann-Pickering, Simone +4 more
core +4 more sources
Biosonar discrimination of fine surface textures by echolocating free-tailed bats
Frontiers in Ecology and Evolution, 2022 Echolocating bats are able to discriminate between different surface textures based on the spectral properties of returning echoes. This capability is likely to be important for recognizing prey and for finding suitably perching sites along smooth cave ...
Michael S. Smotherman +3 more
doaj +1 more source
Biosonar behaviour of free-ranging porpoises [PDF]
Proceedings of the Royal Society B: Biological Sciences, 2005 Detecting objects in their paths is a fundamental perceptional function of moving organisms. Potential risks and rewards, such as prey, predators, conspecifics or non-biological obstacles, must be detected so that an animal can modify its behaviour accordingly.
Tomonari, Akamatsu +3 more
openaire +2 more sources
Neural Processing of Naturalistic Echolocation Signals in Bats
Frontiers in Neural Circuits, 2022 Echolocation behavior, a navigation strategy based on acoustic signals, allows scientists to explore neural processing of behaviorally relevant stimuli.
M. Jerome Beetz, Julio C. Hechavarría
doaj +1 more source
Baseband version of the bat-inspired spectrogram correlation and transformation receiver [PDF]
, 2016 Echolocating bats have evolved an excellent ability to detect and discriminate targets in highly challenging environments. They have had more than 50 million years of evolution to optimise their echolocation system with respect to their surrounding ...
Balleri, Alessio +3 more
core +3 more sources