title: Combining Ca2+ and membrane potential imaging in single neurons.
abstract: The ability to monitor Ca(2+) signals and membrane potential simultaneously at multiple locations on the same neuron facilitates further progress in our understanding of neuronal function. In particular, this method allows correlation of electrical and chemical signals from multiple sites, including those inaccessible to microelectrodes. This protocol describes a procedure for loading cells with two indicators, a Ca(2+)-sensitive Fura dye and voltage-sensitive JPW1114, together with the equipment required for detecting and imaging the two signals. Potential problems are discussed as well as the capabilities and limitations of the technique.
authors.affiliation: Inserm, U836, Team 3, BP 170, Grenoble cedex 09, F-38042, France;
authors.forename: Marco
authors.initials: M
authors.lastname: Canepari
authors.forename: Kaspar E
authors.initials: KE
authors.lastname: Vogt
authors.forename: Michel
authors.initials: M
authors.lastname: De Waard
authors.forename: Dejan
authors.initials: D
authors.lastname: Zecevic
mesh_terms: D000818:Animals; D002118:Calcium / Q000378:metabolism*; D002413:Cations, Divalent / Q000378:metabolism*; D055724:Electrophysiological Phenomena; D005456:Fluorescent Dyes / Q000378:metabolism; D008564:Membrane Potentials; D009474:Neurons / Q000378:metabolism / Q000502:physiology*; D061848:Optical Imaging / Q000379:methods*; D013194:Staining and Labeling / Q000379:methods
chemical_list: D002413:Cations, Divalent; D005456:Fluorescent Dyes; D002118:Calcium