Table 2.

ERP measurements

	ERN (μV)	CRN (μV)	Error positivity (μV)
SS saline	−9.01 ± 1.0	1.15 ± 0.8	11.66 ± 0.9
SS citalopram	−9.49 ± 1.3	1.05 ± 0.9	10.91 ± 0.9
LL saline	−8.86 ± 0.7	1.04 ± 0.9	12.58 ± 0.9
LL citalopram	−9.43 ± 0.8	1.49 ± 0.7	12.14 ± 1.3

ERN and CRN were measured as the individual average minima between 0 and 100 ms after response onset at electrode FCz (±SEM). The error positivity was quantified as the individual average maxima between 100 and 350 ms after response onset at electrode Cz. Neither measure was modulated by acute SSRI administration, 5-HTTLPR genotype, or their interaction.