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Two-photon calcium imaging from head-fixed Drosophila during optomotor walking behavior.
Abstract : Drosophila melanogaster is a model organism rich in genetic tools to manipulate and identify neural circuits involved in specific behaviors. Here we present a technique for two-photon calcium imaging in the central brain of head-fixed Drosophila walking on an air-supported ball. The ball's motion is tracked at high resolution and can be treated as a proxy for the fly's own movements. We used the genetically encoded calcium sensor, GCaMP3.0, to record from important elements of the motion-processing pathway, the horizontal-system lobula plate tangential cells (LPTCs) in the fly optic lobe. We presented motion stimuli to the tethered fly and found that calcium transients in horizontal-system neurons correlated with robust optomotor behavior during walking. Our technique allows both behavior and physiology in identified neurons to be monitored in a genetic model organism with an extensive repertoire of walking behaviors.
https://hal.inria.fr/hal-01062437
Contributor : Anirban Dutta Connect in order to contact the contributor
Submitted on : Tuesday, September 9, 2014 - 5:33:48 PM
Last modification on : Thursday, February 25, 2021 - 7:04:11 PM
Contributor : Anirban Dutta Connect in order to contact the contributor
Submitted on : Tuesday, September 9, 2014 - 5:33:48 PM
Last modification on : Thursday, February 25, 2021 - 7:04:11 PM
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