Nguyen J, Shipley F, Linder A, Plummer G, Liu M, Setru S, Shaevitz J, Leifer A. Whole-brain calcium imaging with cellular resolution in freely behaving Caenorhabditis elegans. Proc Natl Acad Sci U S A. 2016;113(8):E1074–81. PMCID: PMC4776509