Interictal high-frequency oscillations (80-500 Hz) are an indicator of seizure onset areas independent of spikes in the human epileptic brain
نویسندگان
چکیده
منابع مشابه
Interictal high-frequency oscillations (100-500 Hz) in the intracerebral EEG of epileptic patients.
Interictal fast oscillations between 100 and 500 Hz have been reported in signals recorded from implanted microelectrodes in epileptic patients and experimental rat models. Oscillations between 250 and 500 Hz, or fast ripples (FR), appeared related to the epileptic focus whereas ripples (80-200 Hz) were not. We report high-frequency oscillations recorded with intracranial macroelectrodes in sev...
متن کاملQuantitative analysis of high-frequency oscillations (80-500 Hz) recorded in human epileptic hippocampus and entorhinal cortex.
High-frequency oscillations (100-200 Hz), termed ripples, have been identified in hippocampal (Hip) and entorhinal cortical (EC) areas of rodents and humans. In contrast, higher-frequency oscillations (250-500 Hz), termed fast ripples (FR), have been described in seizure-generating limbic areas of rodents made epileptic by intrahippocampal injection of kainic acid and observed in humans ipsilat...
متن کاملSpatial characterization of interictal high frequency oscillations in epileptic neocortex
Interictal high frequency oscillations (HFOs), in particular those with frequency components in excess of 200 Hz, have been proposed as important biomarkers of epileptic cortex as well as the genesis of seizures. We investigated the spatial extent, classification and distribution of HFOs using a dense 4 x 4 mm(2) two dimensional microelectrode array implanted in the neocortex of four patients u...
متن کاملIctal high-frequency oscillations at 80-200 Hz coupled with delta phase in epileptic spasms.
Previous studies of epileptic spasms reported that ictal events were associated with high-frequency oscillations (HFOs) or delta waves involving widespread regions. We determined whether ictal HFOs at 80-200 Hz were coupled with a phase of slow-wave, whether ictal slow-waves were diffusely or locally synchronous signals, and whether the mode of coupling between HFOs and slow-wave phases differe...
متن کاملMethods for Detecting High-Frequency Oscillations in Ongoing Brain Signals: Application to the Determination of Epileptic Seizure Onset Zones
METHODS FOR DETECTING HIGH-FREQUENCY OSCILLATIONS IN ONGOING BRAIN SIGNALS: APPLICATION TO THE DETERMINATION OF EPILEPTIC SEIZURE ONSET ZONES Chiran D. Doshi, B.S. Marquette University, 2011 Epilepsy is a neurological disorder with varied expression. Patients with focal onset seizures that are resistant to medications can benefit from ablative surgery. However, localization of the seizure onset...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Epilepsia
سال: 2008
ISSN: 0013-9580,1528-1167
DOI: 10.1111/j.1528-1167.2008.01656.x