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. Author manuscript; available in PMC: 2012 May 1.
Published in final edited form as: Clin EEG Neurosci. 2010 Oct;41(4):184–195. doi: 10.1177/155005941004100405

Figure 1.

Figure 1

Grand mean reference-free current source density (CSD) [μV/cm2] waveforms (−100 to 995 ms) for 23 healthy adults and 23 schizophrenic patients comparing tonal and phonetic target (averaged across response mode) and nontarget stimuli (averaged across task and response mode) at all 31 recording sites. Horizontal and vertical electrooculograms (EOG) [μV] are shown before artifact correction (insets). Distinct CSD components are labeled for controls (italics) and included frontocentral N1 and N2 sinks (approximate peak latencies were 105 ms at C4 and 230 ms at F4), a mid-parietal P3 source (375 ms at Pz), and a midfrontal sink (FRN; 480 ms at Fz).