KOPS - The Institutional Repository of the University of Konstanz

Olfactory coding in the insect brain : molecular receptive ranges, spatial and temporal coding

Olfactory coding in the insect brain : molecular receptive ranges, spatial and temporal coding

Cite This

Files in this item

Checksum: MD5:4976414db6807b2155cb88981982db04

GALIZIA, Cosmas Giovanni, Paul SZYSZKA, 2008. Olfactory coding in the insect brain : molecular receptive ranges, spatial and temporal coding. In: Entomologia Experimentalis et Applicata. 128(1), pp. 81-92. ISSN 0013-8703. Available under: doi: 10.1111/j.1570-7458.2007.00661.x

@article{Galizia2008Olfac-1131, title={Olfactory coding in the insect brain : molecular receptive ranges, spatial and temporal coding}, year={2008}, doi={10.1111/j.1570-7458.2007.00661.x}, number={1}, volume={128}, issn={0013-8703}, journal={Entomologia Experimentalis et Applicata}, pages={81--92}, author={Galizia, Cosmas Giovanni and Szyszka, Paul} }

<rdf:RDF xmlns:dcterms="http://purl.org/dc/terms/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:bibo="http://purl.org/ontology/bibo/" xmlns:dspace="http://digital-repositories.org/ontologies/dspace/0.1.0#" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:void="http://rdfs.org/ns/void#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > <rdf:Description rdf:about="https://kops.uni-konstanz.de/rdf/resource/123456789/1131"> <dc:creator>Szyszka, Paul</dc:creator> <dcterms:title>Olfactory coding in the insect brain : molecular receptive ranges, spatial and temporal coding</dcterms:title> <dcterms:bibliographicCitation>First publ. in: Entomologia Experimentalis et Applicata ; 128 (2008), 1. - S. 81-92</dcterms:bibliographicCitation> <dc:language>eng</dc:language> <dcterms:abstract xml:lang="eng">Odor information is coded in the insect brain in a sequence of steps, ranging from the receptor cells, via the neural network in the antennal lobe, to higher order brain centers, among which the mushroom bodies and the lateral horn are the most prominent. Across all of these processing steps, coding logic is combinatorial, in the sense that information is represented as patterns of activity across a population of neurons, rather than in individual neurons. Because different neurons are located in different places, such a coding logic is often termed spatial, and can be visualized with optical imaging techniques. We employ in vivo calcium imaging in order to record odor-evoked activity patterns in olfactory receptor neurons, different populations of local neurons in the antennal lobes, projection neurons linking antennal lobes to the mushroom bodies, and the intrinsic cells of the mushroom bodies themselves, the Kenyon cells. These studies confirm the combinatorial nature of coding at all of these stages. However, the transmission of odor-evoked activity patterns from projection neuron dendrites via their axon terminals onto Kenyon cells is accompanied by a progressive sparsening of the population code. Activity patterns also show characteristic temporal properties. While a part of the temporal response properties reflect the physical sequence of odor filaments, another part is generated by local neuron networks. In honeybees, y-aminobutyric acid (GABA)-ergic and histaminergic neurons both contribute inhibitory networks to the antennal lobe. Interestingly, temporal properties differ markedly in different brain areas. In particular, in the antennal lobe odor-evoked activity develops over slow time courses, while responses in Kenyon cells are phasic and transient. The termination of an odor stimulus is reflected by a decrease in activity within most glomeruli of the antennal lobe and an off-response in some glomeruli, while in the mushroom bodies about half of the odor-activated Kenyon cells also exhibit off-responses.</dcterms:abstract> <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/rdf/resource/123456789/28"/> <dc:contributor>Szyszka, Paul</dc:contributor> <dspace:hasBitstream rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/1131/1/galizia.pdf"/> <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/> <dc:contributor>Galizia, Cosmas Giovanni</dc:contributor> <dc:creator>Galizia, Cosmas Giovanni</dc:creator> <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/1131"/> <dcterms:issued>2008</dcterms:issued> <foaf:homepage rdf:resource="http://localhost:8080/jspui"/> <dc:rights>terms-of-use</dc:rights> <dcterms:rights rdf:resource="https://rightsstatements.org/page/InC/1.0/"/> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-23T09:06:22Z</dc:date> <dcterms:hasPart rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/1131/1/galizia.pdf"/> <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/rdf/resource/123456789/28"/> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-23T09:06:22Z</dcterms:available> </rdf:Description> </rdf:RDF>

Downloads since Oct 1, 2014 (Information about access statistics)

galizia.pdf 343

This item appears in the following Collection(s)

Search KOPS


My Account