N2 amplitudes: relations with behavioral performance
A total of eight Pearson correlations were conducted to examine relations among mean N2 amplitude for the left- and right-hemisphere electrode clusters, median RTs, and no-go accuracy cost. Significant correlations were found between median RTs on the go/no-go task and the following: right-hemisphere N2 amplitudes on no-go trials, r = 0.30, p < 0.05, left-hemisphere N2 amplitudes on go trials, r = 0.28, p < 0.05, and left-hemisphere N2 amplitude on no-go trials, r = 0.35, p < 0.05. Larger (i.e., more negative) N2 amplitudes were associated with faster responding on go trials. Correlations involving no-go accuracy cost were not significant (−0.13 < r < 0.11). These correlations indicate that larger N2 amplitudes are related to better EF performance.