Or A Shemesh, Changyang Linghu, Kiryl D Piatkevich, Daniel Goodwin, Orhan Tunc Celiker, Howard J Gritton, Michael F Romano, Ruixuan Gao, Chih-Chieh Jay Yu, Hua-An Tseng, Seth Bensussen, Sujatha Narayan, Chao-Tsung Yang, Limor Freifeld, Cody A Siciliano, Ishan Gupta, Joyce Wang, Nikita Pak, Young-Gyu Yoon, Jeremy F P Ullmann, Burcu Guner-Ataman, Habiba Noamany, Zoe R Sheinkopf, Won Min Park, Shoh Asano, Amy E Keating, James S Trimmer, Jacob Reimer, Andreas S Tolias, Mark F Bear, Kay M Tye, Xue Han, Misha B Ahrens, Edward S Boyden
Methods for one-photon fluorescent imaging of calcium dynamics can capture the activity of hundreds of neurons across large fields of view at a low equipment complexity and cost. In contrast to two-photon methods, however, one-photon methods suffer from higher levels of crosstalk from neuropil, resulting in a decreased signal-to-noise ratio and artifactual correlations of neural activity. We address this problem by engineering cell-body-targeted variants of the fluorescent calcium indicators GCaMP6f and GCaMP7f...
August 5, 2020: Neuron