Nat. Neurosci. 5, 325–331 (2002)

Due to a proof correction error, a sentence on page 329 beginning on line 19 was misprinted as "The amplitude-weighted average time course of the NMDAR-mediated EPSCs when the two pathways were simultaneously stimulated with four 100-Hz stimuli every 6 s was slower than that of EPSCs evoked by independent stimulation of the two pathways (8±1%; P<0.0005; n=6)." This sentence should have read, "NMDAR-mediated EPSCs evoked when the two pathways were simultaneously stimulated with four 100-Hz stimuli every 6 s were slower than the amplitude-weighted average time course of EPSCs evoked by independent stimulation of the two pathways (8±1%; P<0.0005; n=6)."