Given the potential importance of somatostatin interneurons in mediating theta coherence, we also measured α5-GABAAR availability (expressed on somatostatin interneurons) in a partly overlapping set of participants with schizophrenia and control subjects using 11C-Ro15-4513 PET—reported in full elsewhere (Marques et al., 2020). Here, SST is linked to schizophrenia.