AUTHOR=Ahrens Misha B., Huang Kuo-Hua , Narayan Sujatha , Mensh Brett D., Engert Florian TITLE=Two-photon calcium imaging during fictive navigation in virtual environments JOURNAL=Frontiers in Neural Circuits VOLUME=7 YEAR=2013 URL=https://www.frontiersin.org/journals/neural-circuits/articles/10.3389/fncir.2013.00104 DOI=10.3389/fncir.2013.00104 ISSN=1662-5110 ABSTRACT=

A full understanding of nervous system function requires recording from large populations of neurons during naturalistic behaviors. Here we enable paralyzed larval zebrafish to fictively navigate two-dimensional virtual environments while we record optically from many neurons with two-photon imaging. Electrical recordings from motor nerves in the tail are decoded into intended forward swims and turns, which are used to update a virtual environment displayed underneath the fish. Several behavioral features—such as turning responses to whole-field motion and dark avoidance—are well-replicated in this virtual setting. We readily observed neuronal populations in the hindbrain with laterally selective responses that correlated with right or left optomotor behavior. We also observed neurons in the habenula, pallium, and midbrain with response properties specific to environmental features. Beyond single-cell correlations, the classification of network activity in such virtual settings promises to reveal principles of brainwide neural dynamics during behavior.