The close association between the time-domain FRN component and the time-frequency alpha ERD component in CHR patients is intriguing. The distinct FRN topography, consisting of its defining mid-frontal sink (negativity) accompanied by off-midline centroparietal sources (positivity), has been observed as a stimulus- as well as a response-locked CSD component across a variety of visual and auditory ERP paradigms, including tonal and phonetic oddball tasks (e.g., Kayser and Tenke, 2006a, 2006b, Kayser et al., 2010a), dichotic oddball (Tenke et al., 2008), novelty oddball (Tenke et al., 2010), and recognition memory (Kayser et al., 2007, 2010b), and interpreted as an index of ongoing motivational or action-monitoring processes. Importantly, the centroparietal source is impacted by the response requirements, being asymmetric for left or right hand responses (i.e., larger over the ipsilateral hemisphere; cf. Kayser & Tenke, 2006a; Kayser et al., 2010a) but symmetric when no manual response is required (i.e., silently counting targets). However, the press (left or right) versus no press (counting) conditions are differentiated by a superimposed hemisphere asymmetry (i.e., more negativity over the left hemisphere for press; Kayser & Tenke,
