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Lateral Line Units in the Amphibian Brain Could Integrate Wave Curvatures
Citation key Behrend2008
Author Behrend, O., Branoner, F., Ziehm, U., and Zhivkov, Z.
Pages 777-83
Year 2008
DOI 10.1007/s00359-008-0351-1
Journal J Comp Physiol A Neuroethol Sens Neural Behav Physiol.
Volume Aug;194(8)
Abstract Aquatic predators like Xenopus laevis exploit mechano-sensory lateral lines to localise prey on the water surface by its wave emissions. In terms of distance, hypothetically, the source of a concentric wave could be centrally represented based on wave curvatures: for Xenopus, we present a first sample of 98 extracellularly recorded brainstem and midbrain responses to waves with curvatures ranging from 22.2–11.1 m−1. At the frog, concurrently, wave amplitudes and their spectral composition were kept stable. Notably, 61% of 98 units displayed curvature-dependent spike rates, suggesting that wave curvatures could support an extraction of source distances in the amphibian brain.
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