Frequency specific spatial interactions in human electrocorticography: V1 alpha oscillations reflect surround suppression

► γ-Oscillations increase similarly during receptive field stimulation in V1 and IPS. ► V1 α-oscillations are local and reflect surround inhibition and negative fMRI signals. ► IPS slow oscillations, including α, reflect non-local large-scale disengagement. ► Similar oscillations in different visual areas have different roles.