The extrabulbar olfactory pathway: primary olfactory fibers bypassing the olfactory bulb in bony fishes?
Identifieur interne : 000704 ( PubMed/Corpus ); précédent : 000703; suivant : 000705The extrabulbar olfactory pathway: primary olfactory fibers bypassing the olfactory bulb in bony fishes?
Auteurs : M H Hofmann ; D L MeyerSource :
- Brain, behavior and evolution [ 0006-8977 ] ; 1995.
English descriptors
- KwdEn :
- Animals, Brain (anatomy & histology), Brain Mapping, Diencephalon (anatomy & histology), Fishes (anatomy & histology), Medial Forebrain Bundle (anatomy & histology), Nerve Fibers (ultrastructure), Olfactory Bulb (anatomy & histology), Olfactory Pathways (anatomy & histology), Preoptic Area (anatomy & histology), Species Specificity, Telencephalon (anatomy & histology).
- MESH :
- anatomy & histology : Brain, Diencephalon, Fishes, Medial Forebrain Bundle, Olfactory Bulb, Olfactory Pathways, Preoptic Area, Telencephalon.
- ultrastructure : Nerve Fibers.
- Animals, Brain Mapping, Species Specificity.
Abstract
Recent evidence has revealed that some primary olfactory fibers bypass the olfactory bulb and terminate in tel- and/or diencephalic areas (extrabulbar olfactory pathway, EBOP). We investigated the projections of this system in different fishes by means of soybean agglutinin binding studies. In all species in which primary olfactory fibers were labelled, fiber bundles can be traced beyond the olfactory bulb. These run with the medial forebrain bundle and terminate at different targets, depending on the species. In the teleosts Macrognathus, Mogurnda, and Hemichromis, EBOP fibers can be traced into the ventral telencephalon, pars ventralis, pars supracommissuralis and/or into the preoptic nucleus. In most nonteleosts studied (Polypterus, Chalamoichthys, Amia), the EBOP also innervates diencephalic targets. An exception is Acipenser, which displays an innervation pattern similar to that in teleosts. Comparison with results obtained by other techniques suggests that the EBOP consists of primary olfactory fibers, which project not only to the olfactory bulb but also to various other targets in the prosencephalon of anamniotic vertebrates.
PubMed: 8719759
Links to Exploration step
pubmed:8719759Le document en format XML
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We investigated the projections of this system in different fishes by means of soybean agglutinin binding studies. In all species in which primary olfactory fibers were labelled, fiber bundles can be traced beyond the olfactory bulb. These run with the medial forebrain bundle and terminate at different targets, depending on the species. In the teleosts Macrognathus, Mogurnda, and Hemichromis, EBOP fibers can be traced into the ventral telencephalon, pars ventralis, pars supracommissuralis and/or into the preoptic nucleus. In most nonteleosts studied (Polypterus, Chalamoichthys, Amia), the EBOP also innervates diencephalic targets. An exception is Acipenser, which displays an innervation pattern similar to that in teleosts. Comparison with results obtained by other techniques suggests that the EBOP consists of primary olfactory fibers, which project not only to the olfactory bulb but also to various other targets in the prosencephalon of anamniotic vertebrates.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">8719759</PMID><DateCreated><Year>1996</Year><Month>09</Month><Day>26</Day></DateCreated><DateCompleted><Year>1996</Year><Month>09</Month><Day>26</Day></DateCompleted><DateRevised><Year>2006</Year><Month>11</Month><Day>15</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0006-8977</ISSN><JournalIssue CitedMedium="Print"><Volume>46</Volume><Issue>6</Issue><PubDate><Year>1995</Year></PubDate></JournalIssue><Title>Brain, behavior and evolution</Title><ISOAbbreviation>Brain Behav. Evol.</ISOAbbreviation></Journal><ArticleTitle>The extrabulbar olfactory pathway: primary olfactory fibers bypassing the olfactory bulb in bony fishes?</ArticleTitle><Pagination><MedlinePgn>378-88</MedlinePgn></Pagination><Abstract><AbstractText>Recent evidence has revealed that some primary olfactory fibers bypass the olfactory bulb and terminate in tel- and/or diencephalic areas (extrabulbar olfactory pathway, EBOP). We investigated the projections of this system in different fishes by means of soybean agglutinin binding studies. In all species in which primary olfactory fibers were labelled, fiber bundles can be traced beyond the olfactory bulb. These run with the medial forebrain bundle and terminate at different targets, depending on the species. In the teleosts Macrognathus, Mogurnda, and Hemichromis, EBOP fibers can be traced into the ventral telencephalon, pars ventralis, pars supracommissuralis and/or into the preoptic nucleus. In most nonteleosts studied (Polypterus, Chalamoichthys, Amia), the EBOP also innervates diencephalic targets. An exception is Acipenser, which displays an innervation pattern similar to that in teleosts. Comparison with results obtained by other techniques suggests that the EBOP consists of primary olfactory fibers, which project not only to the olfactory bulb but also to various other targets in the prosencephalon of anamniotic vertebrates.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Hofmann</LastName><ForeName>M H</ForeName><Initials>MH</Initials><AffiliationInfo><Affiliation>Department of Neuroanatomy, School of Medicine, University of Göttingen, Germany.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Meyer</LastName><ForeName>D L</ForeName><Initials>DL</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D003160">Comparative Study</PublicationType><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>Switzerland</Country><MedlineTA>Brain Behav Evol</MedlineTA><NlmUniqueID>0151620</NlmUniqueID><ISSNLinking>0006-8977</ISSNLinking></MedlineJournalInfo><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D000818" MajorTopicYN="N">Animals</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D001921" MajorTopicYN="N">Brain</DescriptorName><QualifierName UI="Q000033" MajorTopicYN="Y">anatomy & histology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D001931" MajorTopicYN="N">Brain Mapping</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D004027" MajorTopicYN="N">Diencephalon</DescriptorName><QualifierName UI="Q000033" MajorTopicYN="N">anatomy & histology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D005399" MajorTopicYN="N">Fishes</DescriptorName><QualifierName UI="Q000033" MajorTopicYN="Y">anatomy & histology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D008474" MajorTopicYN="N">Medial Forebrain Bundle</DescriptorName><QualifierName UI="Q000033" MajorTopicYN="N">anatomy & histology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D009412" MajorTopicYN="N">Nerve Fibers</DescriptorName><QualifierName UI="Q000648" MajorTopicYN="Y">ultrastructure</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D009830" MajorTopicYN="N">Olfactory Bulb</DescriptorName><QualifierName UI="Q000033" MajorTopicYN="Y">anatomy & histology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D009833" MajorTopicYN="N">Olfactory Pathways</DescriptorName><QualifierName UI="Q000033" MajorTopicYN="Y">anatomy & histology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D011301" MajorTopicYN="N">Preoptic Area</DescriptorName><QualifierName UI="Q000033" MajorTopicYN="N">anatomy & histology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D013045" MajorTopicYN="N">Species Specificity</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D013687" MajorTopicYN="N">Telencephalon</DescriptorName><QualifierName UI="Q000033" MajorTopicYN="N">anatomy & histology</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>1995</Year><Month>1</Month><Day>1</Day></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>1995</Year><Month>1</Month><Day>1</Day><Hour>0</Hour><Minute>1</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>1995</Year><Month>1</Month><Day>1</Day><Hour>0</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">8719759</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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