P291 Non-invasive detection of fast ripples in low-noise EEG recordings

Ripples (80–250Hz) and fast ripples (FR, 250–500Hz) are characterized by poor signal-to-noise ratio, which reduces their visibility in non-invasive recordings. While ripples are observed in scalp EEG, FR detection has been restricted to invasive recordings. We tested the detectability of FR in the scalp EEG of epilepsy patients, recorded with a low-noise amplifier, and quantified their specificity for the prospective epileptogenic zone (EZ).

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