Hello all, we considered to perform a PPI to see, if in presence of an electrophysiological event the synchronization/BOLD correlation between two areas of the brain increases. Can this be done using an event-vector (of the electrophysiological events) as "context" (event there / not there)? Has anybody another idea how to answer this type of question? Thank you very much for any comments or hints, br, Philipp Max Planck Institute of Psychiatry NMR Research Group Kraepelinstr. 2-10 80804 Munich Mail: [log in to unmask] Phone: 0049-89-30622-413