Enhanced co-registration methods to improve intracranial electrode contact localization.

•Co-registration between intramodal pre- and implant images allows for accurate localization of all subdural electrode types.•Iterative closest point (ICP) assisted grid electrode localization is comparable to existing implant MRI based methods.•ICP is a novel, semi-automated method to localize grid, strip and depth electrodes with state-of-the-art accuracy