Figure 3

Isochrones of action potential propagation.
(a) MEA layout and corresponding isochrones of NRVM on unpatterned (control) and patterned MEAs when the culture was stimulated (b) from middle left (microelectrode #14), (c) from the center (microelectrode #44), (d) from middle right (microelectrode #84) (e) from top left (microelectrode #31) (f) from middle top (microelectrode #51) (g) from top right (microelectrode #71) (h) from bottom left (microelectrode #38), (i) from middle bottom (microelectrode #58) and (j) from bottom right (microelectrode #78).