Multimodal integration and stimulus categorization in putative mushroom body output neurons of the honeybee

Strube-Bloss M, Rössler W (2018)
Royal Society Open Science 5(2): 171785.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Autor*in
Strube-Bloss, MartinUniBi ; Rössler, Wolfgang
Abstract / Bemerkung
Flowers attract pollinating insects like honeybees by sophisticated compositions of olfactory and visual cues. Using honeybees as a model to study olfactory–visual integration at the neuronal level, we focused on mushroom body (MB) output neurons (MBON). From a neuronal circuit perspective, MBONs represent a prominent level of sensory-modality convergence in the insect brain. We established an experimental design allowing electrophysiological characterization of olfactory, visual, as well as olfactory–visual induced activation of individual MBONs. Despite the obvious convergence of olfactory and visual pathways in the MB, we found numerous unimodal MBONs. However, a substantial proportion of MBONs (32%) responded to both modalities and thus integrated olfactory–visual information across MB input layers. In these neurons, representation of the olfactory–visual compound was significantly increased compared with that of single components, suggesting an additive, but nonlinear integration. Population analyses of olfactory–visual MBONs revealed three categories: (i) olfactory, (ii) visual and (iii) olfactory–visual compound stimuli. Interestingly, no significant differentiation was apparent regarding different stimulus qualities within these categories. We conclude that encoding of stimulus quality within a modality is largely completed at the level of MB input, and information at the MB output is integrated across modalities to efficiently categorize sensory information for downstream behavioural decision processing.
Erscheinungsjahr
2018
Zeitschriftentitel
Royal Society Open Science
Band
5
Ausgabe
2
Art.-Nr.
171785
eISSN
2054-5703
Page URI
https://pub.uni-bielefeld.de/record/2945751

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Strube-Bloss M, Rössler W. Multimodal integration and stimulus categorization in putative mushroom body output neurons of the honeybee. Royal Society Open Science. 2018;5(2): 171785.
Strube-Bloss, M., & Rössler, W. (2018). Multimodal integration and stimulus categorization in putative mushroom body output neurons of the honeybee. Royal Society Open Science, 5(2), 171785. doi:10.1098/rsos.171785
Strube-Bloss, M., and Rössler, W. (2018). Multimodal integration and stimulus categorization in putative mushroom body output neurons of the honeybee. Royal Society Open Science 5:171785.
Strube-Bloss, M., & Rössler, W., 2018. Multimodal integration and stimulus categorization in putative mushroom body output neurons of the honeybee. Royal Society Open Science, 5(2): 171785.
M. Strube-Bloss and W. Rössler, “Multimodal integration and stimulus categorization in putative mushroom body output neurons of the honeybee”, Royal Society Open Science, vol. 5, 2018, : 171785.
Strube-Bloss, M., Rössler, W.: Multimodal integration and stimulus categorization in putative mushroom body output neurons of the honeybee. Royal Society Open Science. 5, : 171785 (2018).
Strube-Bloss, Martin, and Rössler, Wolfgang. “Multimodal integration and stimulus categorization in putative mushroom body output neurons of the honeybee”. Royal Society Open Science 5.2 (2018): 171785.

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PMID: 29515886
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