Journal
JOURNAL OF COMPARATIVE PHYSIOLOGY A-NEUROETHOLOGY SENSORY NEURAL AND BEHAVIORAL PHYSIOLOGY
Volume 194, Issue 8, Pages 777-783Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s00359-008-0351-1
Keywords
amphibian; lateral line; prey; distance; localisation
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Funding
- Deutsche Forschungsgemeinschaft
- Bundesministerium fur Bildung und Forschung
- National Institute of Health
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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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