The use of electroencephalography in neurodegenerative disease and its utility in dementia

Electroencephalography (EEG) offers a non-invasive window into brain function, often revealing abnormalities long before cognitive symptoms or neurodegeneration emerge. This review examines the expanding role of EEG in neurodegenerative disease and comorbid conditions that contribute to abnormal EEG. We review emerging EEG technologies that uncover previously underappreciated EEG abnormalities and outline future steps needed to advance EEG as a practical tool in clinical and research settings for dementia.