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Conundrums of high-frequency oscillations (80-800 Hz) in the epileptic brain

AutorMenéndez de la Prida, Liset ; Staba, R.J.; Dian, J.A.
Palabras claveHigh-frequency oscillations Ripples Fast ripples
Fecha de publicación2015
CitaciónJournal of Clinical Neurophysiology 32: 207- 219 (2015)
ResumenCopyright © 2015 by the American Clinical Neurophysiology Society. Pathological high-frequency oscillations (HFOs) (80-800 Hz) are considered biomarkers of epileptogenic tissue, but the underlying complex neuronal events are not well understood. Here, we identify and discuss several outstanding issues or conundrums in regards to the recording, analysis, and interpretation of HFOs in the epileptic brain to critically highlight what is known and what is not about these enigmatic events. High-frequency oscillations reflect a range of neuronal processes contributing to overlapping frequencies from the lower 80 Hz to the very fast spectral frequency bands. Given their complex neuronal nature, HFOs are extremely sensitive to recording conditions and analytical approaches. We provide a list of recommendations that could help to obtain comparable HFO signals in clinical and basic epilepsy research. Adopting basic standards will facilitate data sharing and interpretation that collectively will aid in understanding the role of HFOs in health and disease for translational purpose.
Identificadoresdoi: 10.1097/WNP.0000000000000150
issn: 1537-1603
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