I collaborated on this study by Ignacio Serrano-Pedraza, which uses a psychophysical index of surround suppression employed in several of our previous studies. Here, a grating in the visual periphery needs higher contrast to be visible when it is surrounded by a bigger grating of the same orientation. The effect is believed to depend on inhibitory mechanisms in visual cortex. Here, we demonstrate that people with schizophrenia show relatively less suppression under this index, possibly due to differences in cortical inhibition in this group.