One of the main goals of the research program is to elucidate the neural substrates of human brain functions, for which we use techniques to measure brain activity patterns. To fully appreciate cortical activity patterns one needs to measure at the detail of ensembles. We apply state of the art functional MRI, at 7 Tesla, and Electrocorticography with high-density electrode grids implanted under the skull. Functions of particular interest are language, cognitive control, movement, visual perception, and sensory attention. Research is funded by various national grants and by the UMC.