A predictive focus of gain modulation encodes target trajectories in insect vision

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dc.contributor.authorWiederman, S.
dc.contributor.authorFabian, J.
dc.contributor.authorDunbier, J.
dc.contributor.authorO Carroll, D.
dc.date.issued2017
dc.descriptionPublished: 25 July 2017
dc.description.abstractWhen a human catches a ball, they estimate future target location based on the current trajectory. How animals, small and large, encode such predictive processes at the single neuron level is unknown. Here we describe small target-selective neurons in predatory dragonflies that exhibit localized enhanced sensitivity for targets displaced to new locations just ahead of the prior path, with suppression elsewhere in the surround. This focused region of gain modulation is driven by predictive mechanisms, with the direction tuning shifting selectively to match the target's prior path. It involves a large local increase in contrast gain which spreads forward after a delay (e.g. an occlusion) and can even transfer between brain hemispheres, predicting trajectories moved towards the visual midline from the other eye. The tractable nature of dragonflies for physiological experiments makes this a useful model for studying the neuronal mechanisms underlying the brain's remarkable ability to anticipate moving stimuli.
dc.description.statementofresponsibilitySteven D Wiederman, Joseph M Fabian, James R Dunbier, David C O'Carroll
dc.identifier.citationeLife, 2017; 6
dc.identifier.doi10.7554/eLife.26478
dc.identifier.issn2050-084X
dc.identifier.issn2050-084X
dc.identifier.orcidWiederman, S. [0000-0002-0902-803X]
dc.identifier.orcidFabian, J. [0000-0001-6739-7581]
dc.identifier.urihttp://hdl.handle.net/2440/106955
dc.language.isoen
dc.publishereLife Sciences Publications
dc.relation.granthttp://purl.org/au-research/grants/arc/DE150100548
dc.relation.granthttp://purl.org/au-research/grants/arc/DP130104572
dc.rightsCopyright Wiederman et al. This article is distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use and redistribution provided that the original author and source are credited.
dc.source.urihttps://doi.org/10.7554/elife.26478
dc.subjectDragonfly
dc.titleA predictive focus of gain modulation encodes target trajectories in insect vision
dc.typeJournal article
pubs.publication-statusPublished

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