ERO energy (peak magnitude of the S transform output, squared, in a time frequency region of interest), PLI (phase lock index) and PDLI (phase difference lock index) analyses were accomplished from the same datasets that were used to generate ERP data reported in four previous publications in humans [42, 48, 49, 54] and unpublished data in the rats. Methods for these analyses have been described in detail elsewhere [39, 47].
