Genes are often expressed rhythmically over the course of a day, but this pattern is disrupted in individuals with schizophrenia. Researchers compared post-mortem gene expression data from the dorsolateral prefrontal cortex — a region of the brain involved in cognition and memory — of nearly 50 people with and 50 people without schizophrenia. Circadian Expression of Genes Disrupted in Brains of Individuals With Schizophrenia