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Calcium in Kenyon Cell Somata as a Substrate for an Olfactory Sensory Memory in Drosophila

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Calcium in Kenyon Cell Somata as a Substrate for an Olfactory Sensory Memory in Drosophila

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LÜDKE, Alja, Georg RAISER, Johannes NEHRKORN, Andreas V. M. HERZ, C. Giovanni GALIZIA, Paul SZYSZKA, 2018. Calcium in Kenyon Cell Somata as a Substrate for an Olfactory Sensory Memory in Drosophila. In: Frontiers in Cellular Neuroscience. 12, 128. eISSN 1662-5102. Available under: doi: 10.3389/fncel.2018.00128

@article{Ludke2018-05-14Calci-42443, title={Calcium in Kenyon Cell Somata as a Substrate for an Olfactory Sensory Memory in Drosophila}, year={2018}, doi={10.3389/fncel.2018.00128}, volume={12}, journal={Frontiers in Cellular Neuroscience}, author={Lüdke, Alja and Raiser, Georg and Nehrkorn, Johannes and Herz, Andreas V. M. and Galizia, C. Giovanni and Szyszka, Paul}, note={Corrigendum zu diesem Artikel: https://doi.org/10.3389/fncel.2018.00197 Article Number: 128} }

Raiser, Georg Lüdke, Alja Nehrkorn, Johannes Herz, Andreas V. M. Herz, Andreas V. M. Szyszka, Paul 2018-05-14 Galizia, C. Giovanni 2018-05-29T08:32:55Z Animals can form associations between temporally separated stimuli. To do so, the nervous system has to retain a neural representation of the first stimulus until the second stimulus appears. The neural substrate of such sensory stimulus memories is unknown. Here, we search for a sensory odor memory in the insect olfactory system and characterize odorant-evoked Ca<sup>2+</sup> activity at three consecutive layers of the olfactory system in Drosophila: in olfactory receptor neurons (ORNs) and projection neurons (PNs) in the antennal lobe, and in Kenyon cells (KCs) in the mushroom body. We show that the post-stimulus responses in ORN axons, PN dendrites, PN somata, and KC dendrites are odor-specific, but they are not predictive of the chemical identity of past olfactory stimuli. However, the post-stimulus responses in KC somata carry information about the identity of previous olfactory stimuli. These findings show that the Ca<sup>2+</sup> dynamics in KC somata could encode a sensory memory of odorant identity and thus might serve as a basis for associations between temporally separated stimuli. Raiser, Georg eng Attribution 4.0 International Galizia, C. Giovanni Calcium in Kenyon Cell Somata as a Substrate for an Olfactory Sensory Memory in Drosophila 2018-05-29T08:32:55Z Nehrkorn, Johannes Szyszka, Paul Lüdke, Alja

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