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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Coding of sound direction in the auditory periphery of the lake sturgeon, <italic>Acipenser fulvescens</italic></title><author><name sortKey="Meyer, Michaela" sort="Meyer, Michaela" uniqKey="Meyer M" first="Michaela" last="Meyer">Michaela Meyer</name><affiliation><nlm:aff wicri:cut="; and" id="aff1">Department of Biology and Center for Comparative and Evolutionary Biology of Hearing, University of Maryland, College Park, Maryland</nlm:aff></affiliation></author><author><name sortKey="Popper, Arthur N" sort="Popper, Arthur N" uniqKey="Popper A" first="Arthur N." last="Popper">Arthur N. Popper</name><affiliation><nlm:aff wicri:cut="; and" id="aff1">Department of Biology and Center for Comparative and Evolutionary Biology of Hearing, University of Maryland, College Park, Maryland</nlm:aff></affiliation></author><author><name sortKey="Fay, Richard R" sort="Fay, Richard R" uniqKey="Fay R" first="Richard R." last="Fay">Richard R. Fay</name><affiliation><nlm:aff id="aff2">Parmly Hearing Institute, Loyola University of Chicago, Chicago, Illinois</nlm:aff></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">22031776</idno><idno type="pmc">3349627</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3349627</idno><idno type="RBID">PMC:3349627</idno><idno type="doi">10.1152/jn.00390.2011</idno><date when="2011">2011</date><idno type="wicri:Area/Pmc/Corpus">000033</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Corpus" wicri:corpus="PMC">000033</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Coding of sound direction in the auditory periphery of the lake sturgeon, <italic>Acipenser fulvescens</italic></title><author><name sortKey="Meyer, Michaela" sort="Meyer, Michaela" uniqKey="Meyer M" first="Michaela" last="Meyer">Michaela Meyer</name><affiliation><nlm:aff wicri:cut="; and" id="aff1">Department of Biology and Center for Comparative and Evolutionary Biology of Hearing, University of Maryland, College Park, Maryland</nlm:aff></affiliation></author><author><name sortKey="Popper, Arthur N" sort="Popper, Arthur N" uniqKey="Popper A" first="Arthur N." last="Popper">Arthur N. Popper</name><affiliation><nlm:aff wicri:cut="; and" id="aff1">Department of Biology and Center for Comparative and Evolutionary Biology of Hearing, University of Maryland, College Park, Maryland</nlm:aff></affiliation></author><author><name sortKey="Fay, Richard R" sort="Fay, Richard R" uniqKey="Fay R" first="Richard R." last="Fay">Richard R. Fay</name><affiliation><nlm:aff id="aff2">Parmly Hearing Institute, Loyola University of Chicago, Chicago, Illinois</nlm:aff></affiliation></author></analytic><series><title level="j">Journal of Neurophysiology</title><idno type="ISSN">0022-3077</idno><idno type="eISSN">1522-1598</idno><imprint><date when="2011">2011</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><p>The lake sturgeon, <italic>Acipenser fulvescens</italic>, belongs to one of the few extant nonteleost ray-finned fishes and diverged from the main vertebrate lineage about 250 million years ago. The aim of this study was to use this species to explore the peripheral neural coding strategies for sound direction and compare these results to modern bony fishes (teleosts). Extracellular recordings were made from afferent neurons innervating the saccule and lagena of the inner ear while the fish was stimulated using a shaker system. Afferents were highly directional and strongly phase locked to the stimulus. Directional response profiles resembled cosine functions, and directional preferences occurred at a wide range of stimulus intensities (spanning at least 60 dB re 1 nm displacement). Seventy-six percent of afferents were directionally selective for stimuli in the vertical plane near 90° (up down) and did not respond to horizontal stimulation. Sixty-two percent of afferents responsive to horizontal stimulation had their best axis in azimuths near 0° (front back). These findings suggest that in the lake sturgeon, in contrast to teleosts, the saccule and lagena may convey more limited information about the direction of a sound source, raising the possibility that this species uses a different mechanism for localizing sound. For azimuth, a mechanism could involve the utricle or perhaps the computation of arrival time differences. For elevation, behavioral strategies such as directing the head to maximize input to the area of best sensitivity may be used. Alternatively, the lake sturgeon may have a more limited ability for sound source localization compared with teleosts.</p></div></front></TEI><pmc article-type="research-article"><pmc-comment>The publisher of this article does not allow downloading of the full text in XML form.</pmc-comment>
<front><journal-meta><journal-id journal-id-type="nlm-ta">J Neurophysiol</journal-id><journal-id journal-id-type="iso-abbrev">J. Neurophysiol</journal-id><journal-id journal-id-type="hwp">jn</journal-id><journal-id journal-id-type="pmc">jn</journal-id><journal-id journal-id-type="publisher-id">JN</journal-id><journal-title-group><journal-title>Journal of Neurophysiology</journal-title></journal-title-group><issn pub-type="ppub">0022-3077</issn><issn pub-type="epub">1522-1598</issn><publisher><publisher-name>American Physiological Society</publisher-name><publisher-loc>Bethesda, MD</publisher-loc></publisher></journal-meta><article-meta><article-id pub-id-type="pmid">22031776</article-id><article-id pub-id-type="pmc">3349627</article-id><article-id pub-id-type="publisher-id">JN-00390-2011</article-id><article-id pub-id-type="doi">10.1152/jn.00390.2011</article-id><article-categories><subj-group subj-group-type="heading"><subject>Articles</subject></subj-group></article-categories><title-group><article-title>Coding of sound direction in the auditory periphery of the lake sturgeon, <italic>Acipenser fulvescens</italic></article-title></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name><surname>Meyer</surname><given-names>Michaela</given-names></name><xref ref-type="aff" rid="aff1"><sup>1</sup></xref></contrib><contrib contrib-type="author"><name><surname>Popper</surname><given-names>Arthur N.</given-names></name><xref ref-type="aff" rid="aff1"><sup>1</sup></xref></contrib><contrib contrib-type="author"><name><surname>Fay</surname><given-names>Richard R.</given-names></name><xref ref-type="aff" rid="aff2"><sup>2</sup></xref></contrib><aff id="aff1"><sup>1</sup>Department of Biology and Center for Comparative and Evolutionary Biology of Hearing, University of Maryland, College Park, Maryland; and</aff><aff id="aff2"><sup>2</sup>Parmly Hearing Institute, Loyola University of Chicago, Chicago, Illinois</aff></contrib-group><author-notes><corresp>Address for reprint requests and other correspondence: M. Meyer, <addr-line>Dept. of Neurobiology, Harvard Medical School, 220 Longwood Ave., Boston, MA 02115</addr-line> (e-mail: <email>meyerghose@gmail.com</email>).</corresp></author-notes><pub-date pub-type="ppub"><day>15</day><month>1</month><year>2012</year></pub-date><pub-date pub-type="epub"><day>26</day><month>10</month><year>2011</year></pub-date><pub-date pub-type="pmc-release"><day>15</day><month>1</month><year>2013</year></pub-date><pmc-comment> PMC Release delay is 12 months and 0 days and was based on the
<volume>107</volume><issue>2</issue><fpage>658</fpage><lpage>665</lpage><history><date date-type="received"><day>28</day><month>4</month><year>2011</year></date><date date-type="accepted"><day>25</day><month>10</month><year>2011</year></date></history><permissions><copyright-statement>Copyright © 2012 the American Physiological Society</copyright-statement><copyright-year>2012</copyright-year></permissions><self-uri xlink:title="pdf" xlink:type="simple" xlink:href="z9k00212000658.pdf"></self-uri><abstract><p>The lake sturgeon, <italic>Acipenser fulvescens</italic>, belongs to one of the few extant nonteleost ray-finned fishes and diverged from the main vertebrate lineage about 250 million years ago. The aim of this study was to use this species to explore the peripheral neural coding strategies for sound direction and compare these results to modern bony fishes (teleosts). Extracellular recordings were made from afferent neurons innervating the saccule and lagena of the inner ear while the fish was stimulated using a shaker system. Afferents were highly directional and strongly phase locked to the stimulus. Directional response profiles resembled cosine functions, and directional preferences occurred at a wide range of stimulus intensities (spanning at least 60 dB re 1 nm displacement). Seventy-six percent of afferents were directionally selective for stimuli in the vertical plane near 90° (up down) and did not respond to horizontal stimulation. Sixty-two percent of afferents responsive to horizontal stimulation had their best axis in azimuths near 0° (front back). These findings suggest that in the lake sturgeon, in contrast to teleosts, the saccule and lagena may convey more limited information about the direction of a sound source, raising the possibility that this species uses a different mechanism for localizing sound. For azimuth, a mechanism could involve the utricle or perhaps the computation of arrival time differences. For elevation, behavioral strategies such as directing the head to maximize input to the area of best sensitivity may be used. Alternatively, the lake sturgeon may have a more limited ability for sound source localization compared with teleosts.</p></abstract><kwd-group><kwd>sound source localization</kwd><kwd>auditory code</kwd><kwd>particle motion</kwd></kwd-group><funding-group><award-group><funding-source id="CS100">National Institutes of Health</funding-source><award-id rid="CS100">R01 DC006215</award-id></award-group></funding-group></article-meta></front></pmc></record>Pour manipuler ce document sous Unix (Dilib)
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