The neuroethology of electrocommunication: How signal background influences sensory encoding and behaviour in Apteronotus leptorhynchus

Walz, Henriette; Hupé, Ginette J.; Benda, Jan; Lewis, John E.

doi:10.1016/j.jphysparis.2012.07.001

Cited by 36 publications

(57 citation statements)

References 96 publications

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“…This complexity is further supported by the effects of chirp playbacks on aggressive behavior. Chirp playbacks reduce aggressive approaches towards decoys playing chirps with random timing, but do not affect aggressive approaches when delivered with a timing that echoes the chirps of the focal fish (Hupé, 2012;Walz et al, 2013).…”

Section: Function Of Chirpsmentioning

confidence: 99%

“…male-female pairs) produce fast beats. Beats are encoded by P-type tuberous electroreceptors (P-units), whose firing probability encodes EOD amplitude, and by pyramidal neurons in the electrosensory lateral line lobe (ELL) (reviewed in Marsat et al, 2012;Walz et al, 2013). Chirps disrupt beating patterns both because the difference between the two fish's EODfs (and thus beat frequency) changes abruptly and because reductions in EOD amplitude during high-frequency chirps reduce beat contrast (Benda et al, 2006).…”

Section: Social Context and Sensory Encoding Of Chirpsmentioning

confidence: 99%

“…Chirps disrupt beating patterns both because the difference between the two fish's EODfs (and thus beat frequency) changes abruptly and because reductions in EOD amplitude during high-frequency chirps reduce beat contrast (Benda et al, 2006). The effect of chirps on the amplitude envelope and on the resultant P-unit activity depends on the amount of chirp AM and FM and on the magnitude and sign of the dF (Benda et al, 2006;Walz et al, 2013).…”

Section: Social Context and Sensory Encoding Of Chirpsmentioning

confidence: 99%

“…dFs of <30Hz) produce a robust phase shift in the beat cycle and strongly synchronize P-unit activity (Benda et al, 2006;Walz et al, 2013). These chirps, however, do not synchronize P-unit activity when they occur on the background of faster beats (i.e.…”

Section: Social Context and Sensory Encoding Of Chirpsmentioning

confidence: 99%

“…One of the most exciting developments in the study of electrocommunication has been an increased understanding of how the electrosensory system extracts information from electrocommunication signals and the importance of social context in signal coding Marsat et al, 2012;Walz et al, 2013). This work has built a foundation for exciting future studies on how hormones and neuromodulators coordinately regulate the reception and production of communication signals.…”

Section: Coordinated Regulation Of Communication Signals and Sensory mentioning

confidence: 99%

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Evolution and hormonal regulation of sex differences in the electrocommunication behavior of ghost knifefishes (Apteronotidae)

2013

Journal of Experimental Biology

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SummaryThe ghost knifefishes (family Apteronotidae) are one of the most successful and diverse families of electric fish. Like other weakly electric fish, apteronotids produce electric organ discharges (EODs) that function in electrolocation and communication. This review highlights the diversity in the structure, function and sexual dimorphism of electrocommunication signals within and across apteronotid species. EOD frequency (EODf) and waveform vary as a function of species, sex and/or social rank. Sex differences in EODf are evolutionarily labile; apteronotid species express every pattern of sexual dimorphism in EODf (males>females; males

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Section: Function Of Chirpsmentioning

confidence: 99%

Section: Social Context and Sensory Encoding Of Chirpsmentioning

confidence: 99%

Section: Social Context and Sensory Encoding Of Chirpsmentioning

confidence: 99%

Section: Social Context and Sensory Encoding Of Chirpsmentioning

confidence: 99%

Section: Coordinated Regulation Of Communication Signals and Sensory mentioning

confidence: 99%

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Evolution and hormonal regulation of sex differences in the electrocommunication behavior of ghost knifefishes (Apteronotidae)

2013

Journal of Experimental Biology

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Distribution of the cholinergic nuclei in the brain of the weakly electric fish, Apteronotus leptorhynchus: Implications for sensory processing

Toscano-Márquez

Oboti

Harvey‐Girard

et al. 2020

J of Comparative Neurology

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Acetylcholine acts as a neurotransmitter/neuromodulator of many central nervous system processes such as learning and memory, attention, motor control, and sensory processing. The present study describes the spatial distribution of cholinergic neurons throughout the brain of the weakly electric fish, Apteronotus leptorhynchus, using in situ hybridization of choline acetyltransferase mRNA. Distinct groups of cholinergic cells were observed in the telencephalon, diencephalon, mesencephalon, and hindbrain. These included cholinergic cell groups typically identified in other vertebrate brains, for example, motor neurons. Using both in vitro and ex vivo neuronal tracing methods, we identified two new cholinergic connections leading to novel hypotheses on their functional significance. Projections to the nucleus praeeminentialis (nP) arise from isthmic nuclei, possibly including the nucleus lateralis valvulae (nLV) and the isthmic nucleus (nI). The nP is a central component of all electrosensory feedback pathways to the electrosensory lateral line lobe (ELL). We have previously shown that some neurons in nP, TS, and tectum express muscarinic receptors. We hypothesize Abbreviations: cELL, commissure of the electrosensory lateral line lobe; CC, crista cerebellaris; CCb, corpus cerebelli; CLS, centrolateral segment of the ELL; CMS, centromedial segment of the ELL; DD, dorsodorsal telencephalon; DFI, lateral subdivision of the diffuse nucleus of the inferior lobe; DL, dorsolateral telencephalon; DLv, dorsolateral telencephalon ventral subdivision; DM2v/d, dorsomedial division of the telencephalon (dorsal and ventral); Dp, dorsal posterior telencephalon; DPI, lateral subdivision of the caudal DP; DPm, medial subdivision of the caudal DP;

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The Physics of Electrosensory Worlds

Benda

2020

The Senses: A Comprehensive Reference

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The neuroethology of electrocommunication: How signal background influences sensory encoding and behaviour in Apteronotus leptorhynchus

Cited by 36 publications

References 96 publications

Evolution and hormonal regulation of sex differences in the electrocommunication behavior of ghost knifefishes (Apteronotidae)

Evolution and hormonal regulation of sex differences in the electrocommunication behavior of ghost knifefishes (Apteronotidae)

Distribution of the cholinergic nuclei in the brain of the weakly electric fish, Apteronotus leptorhynchus: Implications for sensory processing

The Physics of Electrosensory Worlds

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