Skip to main content
. Author manuscript; available in PMC: 2009 Jul 24.
Published in final edited form as: Clin Neurophysiol. 2007 Jun 18;118(10):2128–2148. doi: 10.1016/j.clinph.2007.04.019

Figure 4.

Figure 4

P300 amplitude plotted as a function of target-to-target interval (TTI) for the target (T) stimulus in an oddball task across sequences of preceding nontarget (N) standard stimuli. The legend defines the symbols used to depict various nontarget and target sequences. The subject is instructed to respond only to the target stimulus. P300 amplitude increases independently of local sequence and global target probability. The regression lines reflect curvilinear best fit for a second order polynomial. Similar results have been found for the single-stimulus paradigm when only target stimuli are presented (Gonsalvez et al., 2007). Adapted from Gonsalvez and Polich (2002) with permission of the authors and Blackwell Publishing (Copyright 2002)