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Compared with technologically advanced practice in focal epilepsies, the utilization of EEG in idiopathic generalized epilepsy (IGE) has been lagging, often restricted to a simple diagnostic tool. In this narrative review, we provide an overview of broader applications of EEG beyond this narrow scope, discussing how the current clinical and research applications of EEG may potentially be extended to IGE. The current literature, although limited, suggests that EEG can be used in syndromic classification, guiding antiseizure medication therapy, predicting prognosis, unraveling biorhythms, and investigating functional brain connectivity of IGE. We emphasize the need for longer recordings, particularly 24\u2010h ambulatory EEG, to capture discharges reflecting circadian and sleep\u2013wake cycle\u2010associated variations for wider EEG applications in IGE. Finally, we highlight the challenges and limitations of the current body of literature and suggest future directions to encourage and enhance more extensive applications of this potent tool.<\/jats:p>","DOI":"10.1111\/epi.17119","type":"journal-article","created":{"date-parts":[[2021,11,10]],"date-time":"2021-11-10T08:31:47Z","timestamp":1636533107000},"page":"22-41","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Brainwaves beyond diagnosis: Wider applications of electroencephalography in idiopathic generalized epilepsy"],"prefix":"10.1111","volume":"63","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0182-9702","authenticated-orcid":false,"given":"Udaya","family":"Seneviratne","sequence":"first","affiliation":[{"name":"Department of Neuroscience St. Vincent\u2019s Hospital University of Melbourne Melbourne Victoria Australia"},{"name":"Department of Neuroscience Monash Medical Centre Melbourne Victoria 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