Bats achieve high-resolution echolocation despite using wide acoustic beams through specialized neural processing
Bats achieve high-resolution spatial perception and target localization despite wide acoustic sonar beams through specialized neural processing and active acoustic scanning mechanisms.
The retrieved papers provide solid evidence that bats use active acoustic scanning (saccade-like fixations) and specialized auditory/neural signal processing (such as spectrogram correlation and amplitude-latency trading) to resolve fine details despite broad acoustic beams.
Surlykke A, Ghose K, Moss CF. Acoustic scanning of natural scenes by echolocation in the big brown bat, Eptesicus fuscus.. 2009. https://doi.org/10.1242/jeb.024620
Paper 0 shows that despite using broad sonar beams covering a wide cone, big brown bats achieve high-resolution target scanning by sequentially aiming and shifting their sonar gaze.
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Ming C, Haro S, Simmons AM, Simmons JA. A comprehensive computational model of animal biosonar signal processing.. 2021. https://doi.org/10.1371/journal.pcbi.1008677
Paper 5 details computational models demonstrating how bats process wideband biosonar signals through specialized auditory mechanisms like amplitude-latency trading to extract fine target shape and range.
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