The coding of odour-intensity in the honeybee antennal lobe : local computation optimizes odour representation

Sachse, Silke; Galizia, C. Giovanni

The coding of odour-intensity in the honeybee antennal lobe : local computation optimizes odour representation

Dateien

Sachse03_EJN.pdfGröße: 648.92 KBDownloads: 370

Datum

2003

Autor:innen

Sachse, Silke

Galizia, C. Giovanni

Open Access-Veröffentlichung

Open Access Green

Sammlungen

Biologie

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

European Journal of Neuroscience. 2003, 18(8), pp. 2119-2132. ISSN 0953-816X. eISSN 1460-9568. Available under: doi: 10.1046/j.1460-9568.2003.02931.x

Zusammenfassung

We investigated strategies involved in odour intensity coding by the primary olfactory centre of insects, the antennal lobe (AL), the structural and functional analogue of the olfactory bulb. Using calcium imaging in the honeybee, we simultaneously measured the projection neuron output responses and a compound signal dominated by receptor neuron input in identified olfactory glomeruli to odours spanning seven log units of concentration. A comparison of the two processing levels indicates that the intercellular computation within the AL modulates and contrast-enhances the primary olfactory signals. As a result the AL network optimizes the olfactory code: odour representation is improved at lower concentrations, the relative activity of olfactory glomeruli allows encoding odour quality over up to four log-unit concentrations, and odour-intensity is reliably represented in the overall excitation across AL.

Fachgebiet (DDC)

570 Biowissenschaften, Biologie

Schlagwörter

apis mellifera, calcium-sensitive dye, odour processing, olfactory projection neuros, optical recording

Zitieren

ISO 690

SACHSE, Silke, C. Giovanni GALIZIA, 2003. The coding of odour-intensity in the honeybee antennal lobe : local computation optimizes odour representation. In: European Journal of Neuroscience. 2003, 18(8), pp. 2119-2132. ISSN 0953-816X. eISSN 1460-9568. Available under: doi: 10.1046/j.1460-9568.2003.02931.x

BibTex

@article{Sachse2003codin-7343,
  year={2003},
  doi={10.1046/j.1460-9568.2003.02931.x},
  title={The coding of odour-intensity in the honeybee antennal lobe : local computation optimizes odour representation},
  number={8},
  volume={18},
  issn={0953-816X},
  journal={European Journal of Neuroscience},
  pages={2119--2132},
  author={Sachse, Silke and Galizia, C. Giovanni}
}

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