electron performance efficiencies identification reconstruction 2012 2014 This note describes the algorithms used for the reconstruction and identification of prompt electrons in the central region of the ATLAS detector for the $pp$ collisions data collected in 2012 at $\sqrt{\mathrm{s}}$ = 8 TeV. The efficiency of these algorithms is measured using $Z\rightarrow ee$, $Z\rightarrow ee\gamma$ and $J/\psi\rightarrow ee$ decays using the full dataset, corresponding to an integrated luminosity of 20.3 fb$^{-1}$.