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. Author manuscript; available in PMC: 2009 Nov 1.
Published in final edited form as: Conf Proc IEEE Eng Med Biol Soc. 2008;2008:3594–3597. doi: 10.1109/IEMBS.2008.4649983

Fig. 4.

Fig. 4

(A) The measured excitation thresholds and (B) maximum capture rates for scaffolds stimulated at various levels in culture. There is a decrease in excitation threshold accompanying increasing levels of electrical stimulation, although at stimulation levels above 8 V/cm, there was some observed lack of contraction, suggesting that there is an optimal level of stimulation below this level. Maximum capture rates also increased for stimulation levels less than 5 V/cm, but decreased for stimulation at 8 V/cm, and then at levels above this scaffolds would not contract, again suggesting that optimal stimulation levels are below 8 V./cm (n = 3–5 samples per condition).