Tonic Resting-state Hubness Supports High-gamma Activity Defined Verbal-memory Encoding Network in Epilepsy.

•High-gamma memory activity in IEEG corresponds to specific BOLD changes in resting-state data.•HGA-memory regions had lower hubness relative to control brain nodes in both epilepsy patients and healthy controls.•HGA-memory network displayed hubness and participation (interaction) values distinct from other cognitive networks.•HGA-memory network shared regional membership and interacted with other cognitive networks for successful memory encoding.•HGA-memory network hubness predicted both concurrent task (phasic) and baseline (tonic) verbal-memory encoding success.