A) Induced action potentials for neurons grown on PDL-coated glass, silk-tropoelastin (50/50), and silk-tropoelastin (25/75) surfaces. B) Comparison of membrane resting potential. C) Quantification of action potential magnitude for each surface. Significant differences between (SE50, SE25) and PDL-coated glass condition were calculated using ANOVA, ns=not significant, N=2 for PDL-glass and 3 for SE50, SE25.