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. Author manuscript; available in PMC: 2009 Oct 22.
Published in final edited form as: Psychiatry Res. 2006 May 19;142(2-3):107–128. doi: 10.1016/j.psychres.2005.09.013

Fig. 1.

Fig. 1

Illustration of event-related potential (ERP) data from studies in criminal psychopaths depicting the late ERP negativities observed during a motor preparation task (Forth and Hare, 1989), an emotional lexical decision task (Williamson et al., 1991), a concrete/abstract lexical decision task (Kiehl et al., 1999a), a concrete/abstract discrimination task (Kiehl et al., 1999a), an emotional polarity discrimination task (Kiehl et al., 1999a), a visual oddball task (Kiehl et al., 1999b), an auditory oddball task (Kiehl et al., in press-a), and a Go/No Go response inhibition task (Kiehl et al., 2000b). All figures are adapted to approximately the same time scale and amplitude (negative plotted up), and are from frontal or central electrode sites. eCNV=early contingent negative variation.