2017年6月
Significance of High-frequency Electrical Brain Activity.
Acta medica Okayama
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- 巻
- 71
- 号
- 3
- 開始ページ
- 191
- 終了ページ
- 200
- 記述言語
- 英語
- 掲載種別
- DOI
- 10.18926/AMO/55201
- 出版者・発行元
- OKAYAMA UNIV MED SCHOOL
Electroencephalogram (EEG) data include broadband electrical brain activity ranging from infra-slow bands (< 0.1 Hz) to traditional frequency bands (e.g., the approx. 10 Hz alpha rhythm) to high-frequency bands of up to 500 Hz. High-frequency oscillations (HFOs) including ripple and fast ripple oscillations (80-200 Hz and>200 / 250 Hz, respectively) are particularly of note due to their very close relationship to epileptogenicity, with the possibility that they could function as a surrogate biomarker of epileptogenicity. In contrast, physiological high-frequency activity plays an important role in higher brain functions, and the differentiation between pathological / epileptic and physiological HFOs is a critical issue, especially in epilepsy surgery. HFOs were initially recorded with intracranial electrodes in patients with intractable epilepsy as part of a long-term invasive seizure monitoring study. However, fast oscillations (FOs) in the ripple and gamma bands (40-80 Hz) are now noninvasively detected by scalp EEG and magnetoencephalography, and thus the scope of studies on HFOs /FOs is rapidly expanding.
- リンク情報
- ID情報
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- DOI : 10.18926/AMO/55201
- ISSN : 0386-300X
- PubMed ID : 28655938
- Web of Science ID : WOS:000406105600001