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. Author manuscript; available in PMC: 2015 Aug 1.
Published in final edited form as: Prog Biophys Mol Biol. 2014 Jul 15;115(0):294–304. doi: 10.1016/j.pbiomolbio.2014.07.001

Figure 6.

Figure 6

All-optical measurements in cardiomyocytes using ChR2 as actuator and Rhod-4 as a sensor – example traces, comparing: A. electrical pacing and B. optical pacing of ChR2 expressing neonatal cardiomyocytes. Top: Rhod-4 signal (Ca2+); Bottom: Contractility measurements obtained through videotracking simultaneously with the Ca2+ data.