Error estimates for a FitzHugh–Nagumo parameter-dependent reaction-diffusion system Konstantinos Chrysafinos, Sotirios P. Filopoulos and Theodosios K. Papathanasiou ESAIM: M2AN, 47 1 (2013) 281-304 Published online: 23 November 2012 DOI: 10.1051/m2an/2012028