significantly decreased evoked power in the gamma-band relative to healthy controls, although the magnitude of the abnormality in gamma-band evoked power was less pronounced in the CHR patients than in the young schizophrenia patients, as quantified by the effect sizes. These findings are consistent with other findings of reduced evoked power GBRs in unaffected co-twins of patients with schizophrenia (Hall et al., 2011b) and suggest that reduced auditory evoked gamma power may reflect the risk for developing schizophrenia.
