Τhe aim of the study is to investigate the role of EEG both in predicting epileptogenesis in patients with acute stroke and in detecting and clarifying the clinical significance of subclinical epileptic seizures in a stroke unit. More specifically, the performance of routine EEG in patients with ischemic or hemorrhagic stroke who are hospitalized in the Stroke Unit within the first days after the event, regardless of the presence of clinical indications, and the identification of risk factors for the early development of epilepsy in the course of these patients' disease constitute the central research question. The identification of patients with subclinical electroencephalographic seizures and the impact of such events on functional outcome, as well as their association with the development of epilepsy, are set as secondary research objectives.