1. An implantable medical device system comprising: an implantable medical device configured to acquire EEG signals from a patient and to store a representation of the EEG signals in a memory; an external component provided with a software operating program and associated hardware and configured to process, store, playback and display on a display of the external component the representation of the EEG signals stored in the memory of the implantable medical device; and a communication link configured to establish communication between a communications subsystem of the implantable medical device and the external component to enable the external component to process, store, playback and display on the display of the external component the representation of the EEG signals acquired and stored in the implantable medical device.