Segregation of electroreceptive and mechanoreceptive lateral line afferents in the hindbrain of chondrostean fishes.
Identifieur interne : 000715 ( PubMed/Checkpoint ); précédent : 000714; suivant : 000716Segregation of electroreceptive and mechanoreceptive lateral line afferents in the hindbrain of chondrostean fishes.
Auteurs : J G New ; D. BodznickSource :
- Brain research [ 0006-8993 ] ; 1985.
English descriptors
- KwdEn :
- Animals, Brain Mapping, Cranial Nerves (cytology), Cranial Nerves (physiology), Electricity, Fishes (physiology), Mechanoreceptors (physiology), Medulla Oblongata (anatomy & histology), Medulla Oblongata (physiology), Neurons, Afferent (physiology), Sense Organs (innervation), Sensory Receptor Cells (physiology).
- MESH :
- anatomy & histology : Medulla Oblongata.
- cytology : Cranial Nerves.
- innervation : Sense Organs.
- physiology : Cranial Nerves, Fishes, Mechanoreceptors, Medulla Oblongata, Neurons, Afferent, Sensory Receptor Cells.
- Animals, Brain Mapping, Electricity.
Abstract
The anterior lateral line nerve (ALLN) in the chondrostean fishes (sturgeon and paddlefishes) consists of both fibers innervating ampullary electroreceptors and fibers innervating the mechanoreceptive neuromasts of the cephalic lateral line system. The fibers of the posterior lateral line nerve (PLLN) innervate only mechanoreceptive neuromasts on the body trunk. The ALLN enters the medulla via dorsal and ventral roots; the dorsal root projects to the dorsal octavolateralis nucleus (DON), whereas the ventral root and the PLLN project principally to the medial octavolateralis nucleus (MON). Previous studies in elasmobranchs have demonstrated that fibers of the dorsal root of the ALLN convey electrosensory information, and fibers of the ventral root are concerned with mechanoreceptive information. Electrophysiological and neuroanatomical methods are employed in this study in order to determine if there exists a similar segregation of electroreceptive and mechanoreceptive lateral line afferents within the chondrostean medulla. In specimens of shovelnose, Scaphirhynchus platorynchus, and Atlantic sturgeon, Acipenser oxyrhynchus, and paddlefish, Polyodon spathula, evoked potentials recorded from the hindbrain and elicited by electric fields reached maximum amplitude within the DON and decreased in amplitude through the cerebellar crest. Evoked potentials elicited by stimulation of the posterior lateral line nerve achieved maximum amplitude within the MON. Single and multiple unit recordings revealed that units within the DON responded only to electric field stimulation, whereas units recorded in the MON responded only to mechanical stimulation. Horseradish peroxidase implanted beneath isolated patches of ampullae in Polyodon revealed fibers innervating electroreceptors projecting to the DON via the dorsal root of the ALLN. These results demonstrate a segregation of electroreceptive and mechanoreceptive lateral line afferent fibers in the chondrostean hindbrain, similar to that seen in elasmobranchs. This supports the contention that the electrosensory systems of elasmobranchs and chondrosteans are homologous, and are derived from the common ancestor of elasmobranch and actinopterygian fishes.
PubMed: 4005579
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Bodznick</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="1985">1985</date><idno type="RBID">pubmed:4005579</idno><idno type="pmid">4005579</idno><idno type="wicri:Area/PubMed/Corpus">000773</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Corpus" wicri:corpus="PubMed">000773</idno><idno type="wicri:Area/PubMed/Curation">000773</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Curation">000773</idno><idno type="wicri:Area/PubMed/Checkpoint">000773</idno><idno type="wicri:explorRef" wicri:stream="Checkpoint" wicri:step="PubMed">000773</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Segregation of electroreceptive and mechanoreceptive lateral line afferents in the hindbrain of chondrostean fishes.</title><author><name sortKey="New, J G" sort="New, J G" uniqKey="New J" first="J G" last="New">J G New</name></author><author><name sortKey="Bodznick, D" sort="Bodznick, D" uniqKey="Bodznick D" first="D" last="Bodznick">D. Bodznick</name></author></analytic><series><title level="j">Brain research</title><idno type="ISSN">0006-8993</idno><imprint><date when="1985" type="published">1985</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Animals</term><term>Brain Mapping</term><term>Cranial Nerves (cytology)</term><term>Cranial Nerves (physiology)</term><term>Electricity</term><term>Fishes (physiology)</term><term>Mechanoreceptors (physiology)</term><term>Medulla Oblongata (anatomy & histology)</term><term>Medulla Oblongata (physiology)</term><term>Neurons, Afferent (physiology)</term><term>Sense Organs (innervation)</term><term>Sensory Receptor Cells (physiology)</term></keywords><keywords scheme="MESH" qualifier="anatomy & histology" xml:lang="en"><term>Medulla Oblongata</term></keywords><keywords scheme="MESH" qualifier="cytology" xml:lang="en"><term>Cranial Nerves</term></keywords><keywords scheme="MESH" qualifier="innervation" xml:lang="en"><term>Sense Organs</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Cranial Nerves</term><term>Fishes</term><term>Mechanoreceptors</term><term>Medulla Oblongata</term><term>Neurons, Afferent</term><term>Sensory Receptor Cells</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Animals</term><term>Brain Mapping</term><term>Electricity</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The anterior lateral line nerve (ALLN) in the chondrostean fishes (sturgeon and paddlefishes) consists of both fibers innervating ampullary electroreceptors and fibers innervating the mechanoreceptive neuromasts of the cephalic lateral line system. The fibers of the posterior lateral line nerve (PLLN) innervate only mechanoreceptive neuromasts on the body trunk. The ALLN enters the medulla via dorsal and ventral roots; the dorsal root projects to the dorsal octavolateralis nucleus (DON), whereas the ventral root and the PLLN project principally to the medial octavolateralis nucleus (MON). Previous studies in elasmobranchs have demonstrated that fibers of the dorsal root of the ALLN convey electrosensory information, and fibers of the ventral root are concerned with mechanoreceptive information. Electrophysiological and neuroanatomical methods are employed in this study in order to determine if there exists a similar segregation of electroreceptive and mechanoreceptive lateral line afferents within the chondrostean medulla. In specimens of shovelnose, Scaphirhynchus platorynchus, and Atlantic sturgeon, Acipenser oxyrhynchus, and paddlefish, Polyodon spathula, evoked potentials recorded from the hindbrain and elicited by electric fields reached maximum amplitude within the DON and decreased in amplitude through the cerebellar crest. Evoked potentials elicited by stimulation of the posterior lateral line nerve achieved maximum amplitude within the MON. Single and multiple unit recordings revealed that units within the DON responded only to electric field stimulation, whereas units recorded in the MON responded only to mechanical stimulation. Horseradish peroxidase implanted beneath isolated patches of ampullae in Polyodon revealed fibers innervating electroreceptors projecting to the DON via the dorsal root of the ALLN. These results demonstrate a segregation of electroreceptive and mechanoreceptive lateral line afferent fibers in the chondrostean hindbrain, similar to that seen in elasmobranchs. This supports the contention that the electrosensory systems of elasmobranchs and chondrosteans are homologous, and are derived from the common ancestor of elasmobranch and actinopterygian fishes.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">4005579</PMID><DateCreated><Year>1985</Year><Month>08</Month><Day>20</Day></DateCreated><DateCompleted><Year>1985</Year><Month>08</Month><Day>20</Day></DateCompleted><DateRevised><Year>2008</Year><Month>11</Month><Day>21</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0006-8993</ISSN><JournalIssue CitedMedium="Print"><Volume>336</Volume><Issue>1</Issue><PubDate><Year>1985</Year><Month>Jun</Month><Day>10</Day></PubDate></JournalIssue><Title>Brain research</Title><ISOAbbreviation>Brain Res.</ISOAbbreviation></Journal><ArticleTitle>Segregation of electroreceptive and mechanoreceptive lateral line afferents in the hindbrain of chondrostean fishes.</ArticleTitle><Pagination><MedlinePgn>89-98</MedlinePgn></Pagination><Abstract><AbstractText>The anterior lateral line nerve (ALLN) in the chondrostean fishes (sturgeon and paddlefishes) consists of both fibers innervating ampullary electroreceptors and fibers innervating the mechanoreceptive neuromasts of the cephalic lateral line system. The fibers of the posterior lateral line nerve (PLLN) innervate only mechanoreceptive neuromasts on the body trunk. The ALLN enters the medulla via dorsal and ventral roots; the dorsal root projects to the dorsal octavolateralis nucleus (DON), whereas the ventral root and the PLLN project principally to the medial octavolateralis nucleus (MON). Previous studies in elasmobranchs have demonstrated that fibers of the dorsal root of the ALLN convey electrosensory information, and fibers of the ventral root are concerned with mechanoreceptive information. Electrophysiological and neuroanatomical methods are employed in this study in order to determine if there exists a similar segregation of electroreceptive and mechanoreceptive lateral line afferents within the chondrostean medulla. In specimens of shovelnose, Scaphirhynchus platorynchus, and Atlantic sturgeon, Acipenser oxyrhynchus, and paddlefish, Polyodon spathula, evoked potentials recorded from the hindbrain and elicited by electric fields reached maximum amplitude within the DON and decreased in amplitude through the cerebellar crest. Evoked potentials elicited by stimulation of the posterior lateral line nerve achieved maximum amplitude within the MON. Single and multiple unit recordings revealed that units within the DON responded only to electric field stimulation, whereas units recorded in the MON responded only to mechanical stimulation. Horseradish peroxidase implanted beneath isolated patches of ampullae in Polyodon revealed fibers innervating electroreceptors projecting to the DON via the dorsal root of the ALLN. These results demonstrate a segregation of electroreceptive and mechanoreceptive lateral line afferent fibers in the chondrostean hindbrain, similar to that seen in elasmobranchs. This supports the contention that the electrosensory systems of elasmobranchs and chondrosteans are homologous, and are derived from the common ancestor of elasmobranch and actinopterygian fishes.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>New</LastName><ForeName>J G</ForeName><Initials>JG</Initials></Author><Author ValidYN="Y"><LastName>Bodznick</LastName><ForeName>D</ForeName><Initials>D</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D003160">Comparative Study</PublicationType><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>Netherlands</Country><MedlineTA>Brain Res</MedlineTA><NlmUniqueID>0045503</NlmUniqueID><ISSNLinking>0006-8993</ISSNLinking></MedlineJournalInfo><CitationSubset>IM</CitationSubset><CitationSubset>S</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D000818" MajorTopicYN="N">Animals</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D001931" MajorTopicYN="N">Brain Mapping</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D003391" MajorTopicYN="N">Cranial Nerves</DescriptorName><QualifierName UI="Q000166" MajorTopicYN="N">cytology</QualifierName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D004560" MajorTopicYN="N">Electricity</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D005399" MajorTopicYN="N">Fishes</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D008465" MajorTopicYN="N">Mechanoreceptors</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="N">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D008526" MajorTopicYN="N">Medulla Oblongata</DescriptorName><QualifierName UI="Q000033" MajorTopicYN="N">anatomy & histology</QualifierName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D009475" MajorTopicYN="N">Neurons, Afferent</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="N">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D012679" MajorTopicYN="N">Sense Organs</DescriptorName><QualifierName UI="Q000294" MajorTopicYN="Y">innervation</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D011984" MajorTopicYN="N">Sensory Receptor Cells</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="N">physiology</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>1985</Year><Month>6</Month><Day>10</Day></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>1985</Year><Month>6</Month><Day>10</Day><Hour>0</Hour><Minute>1</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>1985</Year><Month>6</Month><Day>10</Day><Hour>0</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">4005579</ArticleId><ArticleId IdType="pii">0006-8993(85)90419-6</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list></list><tree><noCountry><name sortKey="Bodznick, D" sort="Bodznick, D" uniqKey="Bodznick D" first="D" last="Bodznick">D. Bodznick</name><name sortKey="New, J G" sort="New, J G" uniqKey="New J" first="J G" last="New">J G New</name></noCountry></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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