the third positive element of an event-related potential that is correlated with postperceptual cognitive procedures, like attention. It is at times, referred to as the P300 because it appears about 300 ms after stimulant onset.

P3 COMPONENT: "The P3 component should have been observed and followed during the trial- why wasn't it?"
Cite this page: Nugent, Pam M.S., "P3 COMPONENT," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/p3-component/ (accessed November 19, 2017).