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    Lateral line sensitivity in free-swimming toadfish Opsanus tau

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    jeb_Mensinger_Article (2.704Mb)
    Date
    2019-01-25
    Author
    Mensinger, Allen F.  Concept link
    Van Wert, Jacey C.  Concept link
    Rogers, Loranzie S.  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/23687
    As published
    https://doi.org/10.1242/jeb.190587
    DOI
    10.1242/jeb.190587
    Keyword
     Efferent; Hair cell; Self-generated movement; Modulation 
    Abstract
    A longstanding question in aquatic animal sensory physiology is the impact of self-generated movement on lateral line sensitivity. One hypothesis is that efferent modulation of the sensory hair cells cancels self-generated noise and allows fish to sample their surroundings while swimming. In this study, microwire electrodes were chronically implanted into the anterior lateral line nerve of oyster toadfish and neural activity was monitored during forward movement. Fish were allowed to freely swim or were moved by a tethered sled. In all cases, neural activity increased during movement with no evidence of efferent modulation. The anterior lateral line of moving fish responded to a vibrating sphere or the tail oscillations of a robotic fish, indicating that the lateral line also remains sensitive to outside stimulus during self-generated movement. The results suggest that during normal swim speeds, lateral line neuromasts are not saturated and retain the ability to detect external stimuli without efferent modulation.
    Description
    Author Posting. © The Company of Biologists, 2019. This article is posted here by permission of Company of Biologists for personal use, not for redistribution. The definitive version was published in Journal of Experimental Biology 222(2) (2019): jeb190587, doi:10.1242/jeb.190587.
    Publisher Embargo:
    The publisher requires that this item be embargoed until 2020-01-25. Please check back after 2020-01-25.
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    Suggested Citation
    Lateral line sensitivity in free-swimming toadfish Opsanus tau. Journal of Experimental Biology, 222(2), jeb190587.
     
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