19 papers · ranked by Valyu relevance
Takahiro Hiraga, Yasufumi Yamada, Ryo Kobayashi
Bats perceive the three-dimensional (3D) environment by emitting ultrasound pulses from their nose or mouth and receiving echoes through both ears. To detect the position of a target object, it is necessary to know the distance and direction of the target. Certain bat species synchronize the movement of their pinnae…
Yu Teshima, Yasufumi Yamada, Takao Tsuchiya, Olga Heim + 1 more
'Shizuko Hiryu'] Background Echolocating bats use echo information to perceive space, control their behavior, and adjust flight navigation strategies in various environments. However, the echolocation behavior of bats, including echo information, has not been thoroughly investigated as it is technically difficult to…
M. Jerome Beetz, Julio C. Hechavarría
Echolocation behavior, a navigation strategy based on acoustic signals, allows scientists to explore neural processing of behaviorally relevant stimuli. For the purpose of orientation, bats broadcast echolocation calls and extract spatial information from the echoes. Because bats control call emission and thus the…
Ravi Umadi, Uwe Firzlaff
Echolocating bats dynamically adjust their sonar signals during prey pursuit, yet the mechanistic limits that govern these rapid transitions have remained unclear. Here, we introduce the responsivity framework, a predictive model that formalises the scaling between echo delay, call rate, and relative velocity through a…
Ming Chen, James A. Simmons
Accurate imaging of target shape is a crucial aspect of wideband FM biosonar in echolocating bats, for which we have developed new algorithms that provide a solution for the shape of complicated targets in the computational domain. We use recurrent neural networks and convolutional neural networks to determine the…
Takahiro Hiraga, Yasufumi Yamada, Ryo Kobayashi, Dan Stowell
Bats perceive the three-dimensional environment by emitting ultrasound pulses from their nose or mouth and receiving echoes through both ears. To determine the position of a target object, it is necessary to know the distance and direction of the target. Certain bat species that use a combined signal of long constant…
Yu Teshima, Mayuko Mogi, Hare Nishida, Takao Tsuchiya + 2 more
High-precision visual sensing has been achieved by combining cameras with deep learning. However, an unresolved challenge involves identifying information that remains elusive for optical sensors, such as occlusion spots hidden behind objects. Compared to light, sound waves have longer wavelengths and can, therefore…
Omer Mazar, Yossi Yovel
Bats face a complex navigation challenge when emerging from densely populated roosts, where vast numbers take off at once in dark, confined spaces. Each bat must avoid collisions with walls and conspecifics while locating the exit, all amidst overlapping acoustic signals. This crowded environment creates the risk of…
Ravi Umadi
Accurate three-dimensional localisation of ultrasonic bat calls is essential for advancing behavioural and ecological research. I present a comprehensive, open-source simulation framework-Array WAH-for designing, evaluating, and optimising microphone arrays tailored to bioacoustic tracking. The tool incorporates…
Ofri Eitan, Mor Taub, Arjan Boonman, Amir Zviran + 3 more
'Vladimir Tourbabin' 'Anthony J. Weiss' 'Yossi Yovel'] Background As well known to any photographer, controlling the “field of view” offers an extremely powerful mechanism by which to adjust target acquisition. Only a few natural sensory systems can actively control their field of view (e.g., dolphins, whales, and…
Melville Wohlgemuth, Angeles Salles, Cynthia Moss
Little is known about fine scale neural dynamics that accompany rapid shifts in spatial attention in freely behaving animals, primarily because reliable indicators of attention are lacking in standard model organisms engaged in natural tasks. The echolocating bat can serve to bridge this gap, as it exhibits robust…
Shahla U. Umar, Tarik A. Rashid, Aram M. Ahmed, Bryar A. Hassan + 1 more
'Mohammed Rashad Baker'] Bat Algorithm (BA) is a nature-inspired metaheuristic search algorithm designed to efficiently explore complex problem spaces and find near-optimal solutions. The algorithm is inspired by the echolocation behavior of bats, which acts as a signal system to estimate the distance and hunt prey.…
Sefawe, Maatla, Ganti, Sravya + 8 more
Effective monitoring of mobile animal populations is crucial for ecological research, wildlife management, and agricultural applications. Monitoring of bats specifically can help understand the spread of disease as well as shine light on bat migration patterns, population dynamics, and the impacts of environmental…
Wouter Jansen, Jan Steckel
Echolocation is the prime sensing modality for many species of bats, who show the intricate ability to perform a plethora of tasks in complex and unstructured environments. Understanding this exceptional feat of sensorimotor interaction is a key aspect into building more robust and performant man-made sonar sensors. In…
Omer Mazar, Yossi Yovel
Bats face a complex navigation challenge when emerging from densely populated roosts, where vast numbers take off at once in dark, confined spaces. Each bat must avoid collisions with walls and conspecifics while locating the exit, all amidst overlapping acoustic signals. This crowded environment creates the risk of…
Miyoko Tsumaki, Yu Teshima, Takao Tsuchiya, Kaoru Ashihara + 2 more
Bats use a sophisticated ultrasonic sensing method called echolocation to recognize the environment. Recently, it has been reported that normal sight participants with no prior experience in echolocation can improve their ability to perceive the spatial layout of various environments through training to hear echoes…
Frederike Dümbgen, Adrien Hoffet, Mihailo Kolundžija, Adam Scholefield + 1 more
'Adam Scholefield' 'Martin Vetterli'] Abstract—For safe and efficient operation, mobile robots need to perceive their environment, and in particular, perform tasks such as obstacle detection, localization, and mapping. Although robots are often equipped with microphones and speakers, the audio modality is rarely used…
Nikita M Finger, Keegan E Eveland, Xiaoyan Yin, Cynthia F Moss
Echolocating bats can navigate complex 3D environments by integrating prior knowledge of spatial layouts and real-time sensory cues. This study demonstrates that inattentional blindness to sensory information undermines successful navigation in Egyptian fruit bats, Rousettus aegyptiacus, a species that has access to…
Andrea Megela Simmons, Amaro Tuninetti, Brandon M. Yeoh, James A. Simmons
We introduce two EEG techniques, one based on conventional monopolar electrodes and one based on a novel tripolar electrode, to record for the first time auditory brainstem responses (ABRs) from the scalp of unanesthetized, unrestrained big brown bats. Stimuli were frequency-modulated (FM) sweeps varying in sweep…