High‐Frequency Intracerebral EEG Activity (100–500 Hz) Following Interictal Spikes

Summary:  Purpose: High‐frequency activity has been recorded with intracerebral microelectrodes in epileptic patients and related to seizure genesis. Our goal was to analyze high‐frequency activity recorded with electroencephalograph (EEG) macroelectrodes during the slow wave immediately following interictal spikes, given the potential importance of this presumed hyperpolarization in transforming spikes into seizures.

[1]  D. Long,et al.  Models of Seizures and Epilepsy , 2006 .

[2]  G Curio,et al.  Linking 600-Hz “Spikelike” EEG/MEG Wavelets (“&sfgr;-Bursts”) to Cellular Substrates: Concepts and Caveats , 2000, Journal of clinical neurophysiology : official publication of the American Electroencephalographic Society.

[3]  Helen J. Cross,et al.  A Possible Role for Gap Junctions in Generation of Very Fast EEG Oscillations Preceding the Onset of, and Perhaps Initiating, Seizures , 2001, Epilepsia.

[4]  Helmut L. Haas,et al.  High frequency (200 Hz) oscillations and firing patterns in the basolateral amygdala and dorsal endopiriform nucleus of the behaving rat , 2003, Behavioural Brain Research.

[5]  Kevin J. Staley,et al.  Mechanisms of Fast Ripples in the Hippocampus , 2004, The Journal of Neuroscience.

[6]  Jerome Engel,et al.  Advances in Understanding the Process of Epileptogenesis Based on Patient Material: What Can the Patient Tell Us? , 2003, Epilepsia.

[7]  M. Steriade,et al.  Focal synchronization of ripples (80-200 Hz) in neocortex and their neuronal correlates. , 2001, Journal of neurophysiology.

[8]  M. Steriade,et al.  Changes in neuronal conductance during different components of cortically generated spike-wave seizures , 2000, Neuroscience.

[9]  D. Prince.  Inhibition in "epileptic" neurons. , 1968, Experimental neurology.

[10]  F. Dudek,et al.  Intracellular correlates of fast (>200 Hz) electrical oscillations in rat somatosensory cortex. , 2000, Journal of neurophysiology.

[11]  M. Steriade,et al.  Neocortical very fast oscillations (ripples, 80-200 Hz) during seizures: intracellular correlates. , 2003, Journal of neurophysiology.

[12]  G. Buzsáki,et al.  Developmental emergence of hippocampal fast-field “ripple” oscillations in the behaving rat pups , 2005, Neuroscience.

[13]  D. Mcintyre.  CHAPTER 28 – The Kindling Phenomenon , 2006 .

[14]  M. Avoli,et al.  CA3-Driven Hippocampal-Entorhinal Loop Controls Rather than Sustains In Vitro Limbic Seizures , 1997, The Journal of Neuroscience.

[15]  T. Gasser,et al.  Transformations towards the normal distribution of broad band spectral parameters of the EEG. , 1982, Electroencephalography and clinical neurophysiology.

[16]  R. Traub,et al.  Ripple (approximately 200-Hz) oscillations in temporal structures. , 2000, Journal of clinical neurophysiology : official publication of the American Electroencephalographic Society.

[17]  A. Lörincz,et al.  Physiological patterns in the hippocampo‐entorhinal cortex system , 2000, Hippocampus.

[18]  Charles L. Wilson,et al.  Quantitative analysis of high-frequency oscillations (80-500 Hz) recorded in human epileptic hippocampus and entorhinal cortex. , 2002, Journal of neurophysiology.

[19]  Y. Okada,et al.  Origins of the somatic N20 and high-frequency oscillations evoked by trigeminal stimulation in the piglets , 2005, Clinical Neurophysiology.

[20]  Charles L. Wilson,et al.  Hippocampal and Entorhinal Cortex High‐Frequency Oscillations (100–500 Hz) in Human Epileptic Brain and in Kainic Acid‐Treated Rats with Chronic Seizures , 1999, Epilepsia.

[21]  I. Germano,et al.  Frameless stereotaxy for surgery of the epilepsies: preliminary experience. Technical note. , 1994, Journal of neurosurgery.

[22]  M. Curtis,et al.  Interictal spikes in focal epileptogenesis , 2001, Progress in Neurobiology.

[23]  Bálint Lasztóczi,et al.  High‐frequency synaptic input contributes to seizure initiation in the low‐[Mg2+] model of epilepsy , 2004, The European journal of neuroscience.

[24]  E. Pralong,et al.  Involvement of amygdala networks in epileptiform synchronization in vitro , 2003, Neuroscience.

[25]  Charles L. Wilson,et al.  Local Generation of Fast Ripples in Epileptic Brain , 2002, The Journal of Neuroscience.

[26]  Itzhak Fried,et al.  Interictal high‐frequency oscillations (80–500Hz) in the human epileptic brain: Entorhinal cortex , 2002, Annals of neurology.

[27]  M. Curtis,et al.  Increased discharge threshold after an interictal spike in human focal epilepsy , 2005, The European journal of neuroscience.

[28]  R. Traub,et al.  Gap junctions, fast oscillations and the initiation of seizures. , 2004, Advances in experimental medicine and biology.

[29]  C. Wilson,et al.  Paired pulse suppression and facilitation in human epileptogenic hippocampal formation , 1998, Epilepsy Research.

[30]  T. Rasmussen,et al.  Temporal Lobectomy with Amygdalectomy and Minimal Hippocampal Resection: Review of 100 Cases , 1991, Canadian Journal of Neurological Sciences / Journal Canadien des Sciences Neurologiques.

[31]  G Curio,et al.  Different origins of low- and high-frequency components (600 Hz) of human somatosensory evoked potentials , 2004, Clinical Neurophysiology.

[32]  M. de Curtis,et al.  Discharge threshold is enhanced for several seconds after a single interictal spike in a model of focal epileptogenesis , 2001, The European journal of neuroscience.

[33]  B. Connors,et al.  Mechanisms of neocortical epileptogenesis in vitro. , 1982, Journal of neurophysiology.

[34]  C. Wilson,et al.  Electrical stimulation of the human epileptic limbic cortex. , 1993, Advances in neurology.

[35]  Gabriel Curio,et al.  Somatotopic source arrangement of 600 Hz oscillatory magnetic fields at the human primary somatosensory hand cortex , 1997, Neuroscience Letters.

[36]  G. Buzsáki,et al.  Sharp wave-associated high-frequency oscillation (200 Hz) in the intact hippocampus: network and intracellular mechanisms , 1995, The Journal of neuroscience : the official journal of the Society for Neuroscience.

[37]  R. Lebovitz.  Autorhythmicity of spontaneous interictal spike discharge at hippocampal penicillin foci , 1979, Brain Research.

[38]  I. Hashimoto.  High-frequency oscillations of somatosensory evoked potentials and fields. , 2000, Journal of clinical neurophysiology : official publication of the American Electroencephalographic Society.

[39]  Massimo Avoli,et al.  Ripple activity in the dentate gyrus of dishinibited hippocampus‐entorhinal cortex slices , 2005, Journal of neuroscience research.

[40]  H Shibasaki,et al.  High‐frequency SEP components generated in the somatosensory cortex of the monkey , 2000, Neuroreport.

[41]  A. Draguhn,et al.  Cellular and Network Mechanisms Underlying Spontaneous Sharp Wave–Ripple Complexes in Mouse Hippocampal Slices , 2003, The Journal of physiology.

[42]  G. Buzsáki,et al.  High-Frequency Oscillations in the Output Networks of the Hippocampal–Entorhinal Axis of the Freely Behaving Rat , 1996, The Journal of Neuroscience.

[43]  D. Barth,et al.  Submillisecond Synchronization of Fast Electrical Oscillations in Neocortex , 2003, The Journal of Neuroscience.

[44]  A. Hashizume,et al.  Effects of movement on somatosensory N20m fields and high-frequency oscillations , 2002, Neuroreport.

[45]  D R Fish,et al.  Clinical responses to electrical brain stimulation of the temporal and frontal lobes in patients with epilepsy. Pathophysiological implications. , 1993, Brain : a journal of neurology.

[46]  G F Ayala,et al.  Genesis of epileptic interictal spikes. New knowledge of cortical feedback systems suggests a neurophysiological explanation of brief paroxysms. , 1973, Brain research.

[47]  G Curio,et al.  Localization of evoked neuromagnetic 600 Hz activity in the cerebral somatosensory system. , 1994, Electroencephalography and clinical neurophysiology.

[48]  D. Mcintyre,et al.  Kindling: some old and some new , 2002, Epilepsy Research.

[49]  M. Avoli,et al.  Bicuculline-induced epileptogenesis in the human neocortex maintained in vitro , 2004, Experimental Brain Research.

[50]  Charles L. Wilson,et al.  High‐frequency oscillations recorded in human medial temporal lobe during sleep , 2004, Annals of neurology.

[51]  Charles L. Wilson,et al.  High‐frequency oscillations in human brain , 1999, Hippocampus.