Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/106955
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Type: Journal article
Title: A predictive focus of gain modulation encodes target trajectories in insect vision
Author: Wiederman, S.
Fabian, J.
Dunbier, J.
O Carroll, D.
Citation: eLife, 2017; 6
Publisher: eLife Sciences Publications
Issue Date: 2017
ISSN: 2050-084X
2050-084X
Statement of
Responsibility: 
Steven D Wiederman, Joseph M Fabian, James R Dunbier, David C O'Carroll
Abstract: When 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.
Keywords: Dragonfly
Description: Published: 25 July 2017
Rights: Copyright 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.
RMID: 0030073230
DOI: 10.7554/eLife.26478
Grant ID: http://purl.org/au-research/grants/arc/DE150100548
http://purl.org/au-research/grants/arc/DP130104572
Appears in Collections:Physiology publications

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