Between-group VEctor-based Spatio-Temporal analysis using L1-minimum norm (VESTAL) analyses for theta (4 Hz to 8 Hz). Clusters in yellow/red show more right-hemisphere slow-wave activity in the schizophrenia group than in the control group (P<0.05, family-wise corrected). Adapted from YH Chen, B Stone-Howell, Edgar, J. C., et al. Frontal slow-wave activity as a predictor of negative symptoms, cognition and functional capacity in schizophrenia. Br J Psychiatry. 2016 Feb; 208(2), 160–167. doi:10.1192/bjp.bp.114.156075