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  Neural mechanisms underlying sensitivity to reverse-phi motion in the fly

Leonhardt, A., Meier, M., Serbe, E., Eichner, H., & Borst, A. (2017). Neural mechanisms underlying sensitivity to reverse-phi motion in the fly. PLoS One, 12(12): e0189019. doi:10.1371/journal.pone.0189019.

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journal.pone.0189019.pdf (Verlagsversion), 8MB
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journal.pone.0189019.pdf
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Data Availability: Raw data and analysis code used to generate all figures are publicly accessible (https://github.com/borstlab/reversephi_paper).
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© 2017 Leonhardt et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Leonhardt, Aljoscha1, Autor           
Meier, Matthias1, Autor           
Serbe, Etienne1, Autor           
Eichner, Hubert1, Autor           
Borst, Alexander1, Autor           
Affiliations:
1Department: Circuits-Computation-Models / Borst, MPI of Neurobiology, Max Planck Society, ou_1113548              

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Schlagwörter: APPARENT MOTION; VISUAL INTERNEURONS; FUNCTIONAL SPECIALIZATION; DIRECTIONAL SELECTIVITY; TARGETED EXPRESSION; REICHARDT DETECTORS; INPUT ELEMENTS; DROSOPHILA; PERCEPTION; VISIONScience & Technology - Other Topics;
 Zusammenfassung: Optical illusions provide powerful tools for mapping the algorithms and circuits that underlie visual processing, revealing structure through atypical function. Of particular note in the study of motion detection has been the reverse-phi illusion. When contrast reversals accompany discrete movement, detected direction tends to invert. This occurs across a wide range of organisms, spanning humans and invertebrates. Here, we map an algorithmic account of the phenomenon onto neural circuitry in the fruit fly Drosophila melanogaster. Through targeted silencing experiments in tethered walking flies as well as electrophysiology and calcium imaging, we demonstrate that ON-or OFF-selective local motion detector cells T4 and T5 are sensitive to certain interactions between ON and OFF. A biologically plausible detector model accounts for subtle features of this particular form of illusory motion reversal, like the re-inversion of turning responses occurring at extreme stimulus velocities. In light of comparable circuit architecture in the mammalian retina, we suggest that similar mechanisms may apply even to human psychophysics.

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Sprache(n): eng - English
 Datum: 2017-12-20
 Publikationsstatus: Erschienen
 Seiten: 25
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: ISI: 000418564200022
DOI: 10.1371/journal.pone.0189019
 Art des Abschluß: -

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Titel: PLoS One
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: San Francisco, CA : Public Library of Science
Seiten: - Band / Heft: 12 (12) Artikelnummer: e0189019 Start- / Endseite: - Identifikator: ISSN: 1932-6203
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000277850