Neural Processing of Naturalistic Echolocation Signals in Bats

Frontiers in Neural Circuits, Journal Year: 2022, Volume and Issue: 16

Published: May 18, 2022

Echolocation behavior, a navigation strategy based on acoustic signals, allows scientists to explore neural processing of behaviorally relevant stimuli. For the purpose orientation, bats broadcast echolocation calls and extract spatial information from echoes. Because control call emission thus availability information, behavioral relevance these signals is undiscussable. While most neurophysiological studies, conducted in past, used synthesized stimuli that mimic portions recent progress has been made understand how naturalistic are encoded bat brain. Here, we review does stimulus history affect processing, multiple objects embedded naturalistic, noisy environment processed We end our by discussing huge potential state-of-the-art recording techniques provide gain more complete picture neuroethology behavior.

Language: Английский

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Phase‐amplitude coupling profiles differ in frontal and auditory cortices of bats

European Journal of Neuroscience, Journal Year: 2020, Volume and Issue: 55(11-12), P. 3483 - 3501

Published: Sept. 26, 2020

Neural oscillations are at the core of important computations in mammalian brain. Interactions between oscillatory activities different frequency bands, such as delta (1-4 Hz), theta (4-8 Hz) or gamma (>30 a powerful mechanism for binding fundamentally distinct spatiotemporal scales neural processing. Phase-amplitude coupling (PAC) is one plausible and well-described interaction, but much yet to be uncovered regarding how PAC dynamics contribute sensory representations. In particular, although appears have major role audition, characteristics profiles integration (i.e. frontal) cortical areas remain obscure. Here, we address this question by studying frontal-auditory field (FAF; an auditory area bat frontal cortex) cortex (AC) Carollia perspicillata. By means simultaneous electrophysiological recordings cortices examining local-field potentials (LFPs), show that amplitude gamma-band activity couples with phase low-frequency LFPs both structures. Our results demonstrate FAF occurs most prominently delta/high-gamma frequencies (1-4/75-100 whereas AC strongest delta-theta/low-gamma (2-8/25-55 range. We argue may represent mechanisms neuronal processing cortices, might complement interactions network.

Language: Английский

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The frugivorous bat Carollia perspicillata dynamically changes echolocation parameters in response to acoustic playback

Journal of Experimental Biology, Journal Year: 2021, Volume and Issue: 224(6)

Published: Feb. 10, 2021

Animals extract behaviorally relevant signals from 'noisy' environments. Echolocation behavior provides a rich system testbed for investigating signal extraction. When echolocating in acoustically enriched environments, bats show many adaptations that are believed to facilitate Most studies date focused on describing insectivorous while frugivorous have rarely been tested. Here, we characterize how the bat Carollia perspicillata adapts its echolocation response acoustic playback. Since not only adapt their calls interference but also with respect target distances, swung pendulum control distance-dependent call changes. Forward swings evoked consistent similar approach flights. By comparing recorded presence and absence of playback, could precisely define influence context bats' vocal behavior. Our results C. decrease terminal peak frequencies when considering at an individual level, it became clear each dynamically adjusts different parameters across even within experimental days. Utilizing such dynamics, create unique streams extraction noisy

Language: Английский

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Flexible control of vocal timing in Carollia perspicillata bats enables escape from acoustic interference

Communications Biology, Journal Year: 2023, Volume and Issue: 6(1)

Published: Nov. 13, 2023

In natural environments, background noise can degrade the integrity of acoustic signals, posing a problem for animals that rely on their vocalizations communication and navigation. A simple behavioral strategy to combat interference would be restrict call emissions periods low-amplitude or no noise. Using audio playback computational tools automated detection over 2.5 million from groups freely vocalizing bats, we show bats (Carollia perspicillata) dynamically adapt timing calls avoid jamming in both predictably unpredictably patterned This study demonstrates spontaneously seek out temporal windows opportunity acoustically crowded providing mechanism efficient echolocation cluttered landscapes.

Language: Английский

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The second harmonic neurons in auditory midbrain of Hipposideros pratti are more tolerant to background white noise

Hearing Research, Journal Year: 2020, Volume and Issue: 400, P. 108142 - 108142

Published: Dec. 5, 2020

Language: Английский

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Echo-locate: Cerebellar activity predicts vocalization in fruit-eating bats

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: June 11, 2024

Abstract Echolocating bats exhibit remarkable auditory behaviors, enabled by adaptations within and outside their system. Yet, research in echolocating has focused mostly on brain areas that belong to the classic ascending pathway. This study provides direct evidence linking cerebellum, an evolutionarily ancient non-classic structure, vocalization hearing. We report fruit-eating bat Carollia perspicillata , external sounds can evoke cerebellar responses with latencies below 20 ms. Such fast are indicative of early inputs cerebellum. In vocalizing bats, distinct spike train patterns allow prediction over 85% accuracy sound they about produce, or have just produced, i.e., communication calls echolocation pulses. Taken together, our findings provide specializations for hearing cerebellum specialist. Teaser The responds predicts future past vocalizations

Language: Английский

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Synchronous beta oscillation of epileptiform activities detected by microelectrode arrays in the awake and anesthetized mice

Sensors and Actuators A Physical, Journal Year: 2020, Volume and Issue: 318, P. 112529 - 112529

Published: Dec. 29, 2020

Language: Английский

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Oscillatory waveform shape and temporal spike correlations differ across bat frontal and auditory cortex

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2023, Volume and Issue: unknown

Published: July 3, 2023

Abstract Neural oscillations are associated with diverse computations in the mammalian brain. The waveform shape of oscillatory activity measured cortex relates to local physiology, and can be informative about aberrant or dynamically changing states. However, how differs across distant yet functionally anatomically related cortical regions is largely unknown. In this study, we capitalize on simultaneous recordings field potentials (LFPs) auditory frontal cortices awake, male Carollia perspicillata bats examine, a cycle-by-cycle basis, differences regions. We find that markedly fronto-auditory circuit even for temporally correlated rhythmic comparable frequency ranges (i.e. delta gamma bands) during spontaneous activity. addition, report consistent between areas variability individual cycles. A conceptual model predicts higher spike-spike spike-LFP correlations more asymmetric shape, phenomenon was observed data: were cortex. suggests relationship spike areas. Altogether, these results indicate possess distinct dynamics anatomical functional diversity circuit. Significance statement brain many animals displays intricate oscillations, which usually characterized terms their amplitude. Here, study from bat additionally focusing characteristic shape. reveals clear regularity, when similar. waveforms result stronger neural spikes electrical Such predictions supported by data. findings shed light onto unique properties different areas, providing key insights into distinctive physiology within

Language: Английский

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Adaptive learning and recall of motor-sensory sequences in adult echolocating bats

BMC Biology, Journal Year: 2021, Volume and Issue: 19(1)

Published: Aug. 19, 2021

Abstract Background Learning to adapt changes in the environment is highly beneficial. This especially true for echolocating bats that forage diverse environments, moving between open spaces complex ones. Bats are known their ability rapidly adjust sensing according auditory information gathered from within milliseconds but can they also benefit longer adaptive processes? In this study, we examined adult bats’ slowly strategy a new type of have never experienced such long durations, and then maintain learned echolocation over time. Results We show period weeks, Pipistrellus kuhlii gradually pre-takeoff sequence when moved constantly cluttered environment. After adopting improved strategy, retained an instantaneously use it placed back similarly environment, even after spending many months significantly less Conclusions demonstrate long-term flexibility sensory acquisition animals. Our study gives further insight into importance planning initiation precise sensorimotor behavior as approaching landing.

Language: Английский

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Cardiovascular mechanisms underlying vocal behavior in freely moving macaque monkeys

iScience, Journal Year: 2021, Volume and Issue: 25(1), P. 103688 - 103688

Published: Dec. 24, 2021

Language: Английский

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