@article{Paoli2020Codin-50526,
  year={2020},
  doi={10.1242/jeb.218032},
  title={Coding of odour and space in the hemimetabolous insect Periplaneta americana},
  number={3},
  volume={223},
  issn={0022-0949},
  journal={The Journal of Experimental Biology},
  author={Paoli, Marco and Nishino, Hiroshi and Couzin-Fuchs, Einat and Galizia, C. Giovanni},
  note={Article Number: jeb218032}
}

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    <dcterms:abstract xml:lang="eng">The general architecture of the olfactory system is highly conserved from insects to humans, but neuroanatomical and physiological differences can be observed across species. The American cockroach, inhabiting dark shelters with a rather stable olfactory landscape, is equipped with long antennae used for sampling the surrounding air-space for orientation and navigation. The antennae's exceptional length provides a wide spatial working range for odour detection; however, it is still largely unknown whether and how this is also used for mapping the structure of the olfactory environment. By selectively labelling antennal lobe projection neurons with a calcium-sensitive dye, we investigated the logic of olfactory coding in this hemimetabolous insect. We show that odour responses are stimulus specific and concentration dependent, and that structurally related odorants evoke physiologically similar responses. By using spatially confined stimuli, we show that proximal stimulations induce stronger and faster responses than distal ones. Spatially confined stimuli of the female pheromone periplanone B activate a subregion of the male macroglomerulus. Thus, we report that the combinatorial logic of odour coding deduced from holometabolous insects applies also to this hemimetabolous species. Furthermore, a fast decrease in sensitivity along the antenna, not supported by a proportionate decrease in sensillar density, suggests a neural architecture that strongly emphasizes neuronal inputs from the proximal portion of the antenna.</dcterms:abstract>
    <dc:contributor>Paoli, Marco</dc:contributor>
    <dcterms:title>Coding of odour and space in the hemimetabolous insect Periplaneta americana</dcterms:title>
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