Thirty-three patients with chronic schizophrenia (SZ) and 20 healthy control participants (HC) underwent EEG recordings. The SZ participants were recruited from out-patient, in-patient, day treatment and foster care programs at the Veterans Affairs Boston Healthcare System. Diagnosis of schizophrenia was made on the basis of the Structured Clinical Interview for DSM-IV (First et al., 1997), and a review of the medical record. The HC participants were recruited from the general community, and matched to the patients on age, handedness (Oldfield, 1971), parental socioeconomic status (Hollingshead, 1965), and estimated premorbid intelligence, as assessed by performance on the Reading scale of Wide Range Achievement Test (WRAT-3) (Wilkinson, 1993). A subset of 19 SZ and 16 HC participants also underwent Diffusion-Tensor Imaging (DTI). The demographic details for the SZ and HC participants (i.e., either in both the EEG and DTI components, or in the EEG component alone) are summarized in Table 1.
