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Updated: Aug 9, 2026
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Functional Imaging of Auditory Cortex in Adult Cats using High-field fMRI
Published on: February 19, 2014
A computational model of echo processing and acoustic imaging in frequency-modulated echolocating bats: the
P A Saillant1, J A Simmons, S P Dear
1Department of Neuroscience, Brown University, Providence, Rhode Island 02912.
The Journal of the Acoustical Society of America
|November 1, 1993
Summary
The big brown bat
Area of Science:
- Bioacoustics
- Neuroethology
- Sensory processing
Background:
- Bats use frequency modulated (FM) sonar for navigation and hunting.
- Understanding bat sonar processing is key to understanding complex sensory systems.
Purpose of the Study:
- To present the spectrogram correlation and transformation (SCAT) model for bat sonar reception.
- To explain how bats reconstruct target range and structure from echoes.
Main Methods:
- The SCAT model incorporates cochlear encoding into spectrograms.
- Two parallel pathways process temporal and spectral echo information.
- Deconvolution of spectrograms yields target impulse responses.
Main Results:
- The model accurately predicts bat perception in behavioral experiments.
- It explains two-glint resolution, echo phase sensitivity, and amplitude-latency trading.
- The model demonstrates ranging accuracy in noisy conditions.
Conclusions:
- The SCAT model provides a framework for bat sonar processing.
- It highlights the integration of temporal and spectral information for target imaging.
- This model advances our understanding of biological sonar systems.
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