To the Editor: We thank Drs. K and Janka for their thoughtful comments about our recent PET study. Among other findings, we reported that compared to healthy volunteers, patients with schizophrenia showed a relative decrease in regional cerebral blood flow (rCBF) in the left rostral supplementary motor area when they recalled a practiced word list. Drawing from the findings of McGuire et al., Drs. K and Janka suggest that the presence of hallucinating patients in our study group could explain the underactivation of the supplementary motor area. However, only five of 14 patients in our study had a clear history of auditory hallucinations (hearing voices commenting or conversing). Therefore, the majority of patients in our group were not hallucinators. This study was not designed to compare hallucinating and nonhallucinating patients.