Comment on

• Genetically encoded green fluorescent Ca2+ indicators with improved detectability for neuronal Ca2+ signals.

  Ohkura M, Sasaki T, Sadakari J, Gengyo-Ando K, Kagawa-Nagamura Y, Kobayashi C, Ikegaya Y, Nakai J. Ohkura M, et al. PLoS One. 2012;7(12):e51286. doi: 10.1371/journal.pone.0051286. Epub 2012 Dec 11. PLoS One. 2012. PMID: 23240011 Free PMC article.
• Fast GCaMPs for improved tracking of neuronal activity.

  Sun XR, Badura A, Pacheco DA, Lynch LA, Schneider ER, Taylor MP, Hogue IB, Enquist LW, Murthy M, Wang SS. Sun XR, et al. Nat Commun. 2013;4:2170. doi: 10.1038/ncomms3170. Nat Commun. 2013. PMID: 23863808 Free PMC article.
• Ultrasensitive fluorescent proteins for imaging neuronal activity.

  Chen TW, Wardill TJ, Sun Y, Pulver SR, Renninger SL, Baohan A, Schreiter ER, Kerr RA, Orger MB, Jayaraman V, Looger LL, Svoboda K, Kim DS. Chen TW, et al. Nature. 2013 Jul 18;499(7458):295-300. doi: 10.1038/nature12354. Nature. 2013. PMID: 23868258 Free PMC article.