--- res: bibo_abstract: - Motion vision is essential for navigating through the environment. Due to its genetic amenability, the fruit fly Drosophila has been serving for a lengthy period as a model organism for studying optomotor behavior as elicited by large-field horizontal motion. However, the neurons underlying the control of this behavior have not been studied in Drosophila so far. Here we report the first whole cell recordings from three cells of the horizontal system (HSN, HSE, and HSS) in the lobula plate of Drosophila. All three HS cells are tuned to large-field horizontal motion in a direction-selective way; they become excited by front-to-back motion and inhibited by back-to-front motion in the ipsilateral field of view. The response properties of HS cells such as contrast and velocity dependence are in accordance with the correlation-type model of motion detection. Neurobiotin injection suggests extensive coupling among ipsilateral HS cells and additional coupling to tangential cells that have their dendrites in the contralateral hemisphere of the brain. This connectivity scheme accounts for the complex layout of their receptive fields and explains their sensitivity both to ipsilateral and to contralateral motion. Thus the main response properties of Drosophila HS cells are strikingly similar to the responses of their counterparts in the blowfly Calliphora, although we found substantial differences with respect to their dendritic structure and connectivity. This long-awaited functional characterization of HS cells in Drosophila provides the basis for the future dissection of optomotor behavior and the underlying neural circuitry by combining genetics, physiology, and behavior.@eng bibo_authorlist: - foaf_Person: foaf_givenName: Bettina foaf_name: Schnell, Bettina foaf_surname: Schnell - foaf_Person: foaf_givenName: Maximilian A foaf_name: Jösch, Maximilian A foaf_surname: Jösch foaf_workInfoHomepage: http://www.librecat.org/personId=2BD278E6-F248-11E8-B48F-1D18A9856A87 orcid: 0000-0002-3937-1330 - foaf_Person: foaf_givenName: Friedrich foaf_name: Förstner, Friedrich foaf_surname: Förstner - foaf_Person: foaf_givenName: Shamprasad foaf_name: Raghu, Shamprasad foaf_surname: Raghu - foaf_Person: foaf_givenName: Hideo foaf_name: Otsuna, Hideo foaf_surname: Otsuna - foaf_Person: foaf_givenName: Kei foaf_name: Ito, Kei foaf_surname: Ito - foaf_Person: foaf_givenName: Alexander foaf_name: Borst, Alexander foaf_surname: Borst - foaf_Person: foaf_givenName: Dierk foaf_name: Reiff, Dierk foaf_surname: Reiff bibo_doi: 10.1152/jn.00950.2009 bibo_issue: '3' bibo_volume: 103 dct_date: 2010^xs_gYear dct_isPartOf: - http://id.crossref.org/issn/ 0022-3077 - http://id.crossref.org/issn/1522-1598 dct_language: eng dct_publisher: American Physiological Society@ dct_title: Processing of horizontal optic flow in three visual interneurons of the Drosophila brain@ fabio_hasPubmedId: '20089816' ...