Overall, IPL appears to be involved in the genesis of various symptoms of schizophrenia, as mentioned above. There are few imaging studies that have examined the IPL volume in schizophrenia with varied findings.6 Previously, a study by our team had reported significantly deficient right IPL volume, which correlated with FRS.7 With this background, we decided to study the volume of the planum parietale (PP), an unexplored area of the IPL. PP forms the cortex covering the posterior wall of the posterior ascending sylvian ramus, which is basically the continuation of the superior temporal gyrus. PP, although a subregion of the supramarginal gyrus, was recently discovered to function as an independent entity.8 It is thought to be involved in polymodal language functions in humans.9 Since, language dysfunction is one of the components of schneiderian FRS, the study aimed at studying the PP volume as well as its correlation with FRS in antipsychotic-naïve schizophrenia patients. We hypothesized that PP volume will be reduced in schizophrenia patients, compared with healthy comparison subjects, and will have a negative correlation with schneiderian FRS.