The study of phase consistency of high frequency EEG/MEG components can reveal properties of neuronal networks that are informative about their excitability state. The clue is that these properties are easier to put in evidence when the response of the neuronal networks is evoked by an adequate stimulation paradigm. The latter may be considered a probe of neuronal excitability state capable of revealing hidden information contained in the phase structure of neuronal activities. In this context the high frequency band components appear to be the most reactive signals.
KalitzinSParraJVelisDNLopes da SilvaFH. Enhancement of phase clustering in the EEG/MEG gamma frequency band anticipates transitions to paroxysmal epileptiform activity in epileptic patients with known visual sensitivity. IEEE Trans Biomed Eng2002; 49: 1279–1286.
2.
ParraJKalitzinSInarleJBlanesWVelisDLopes da SilvaF. Gamma band phase clustering and photosensitivity; is there an underlying mechanism common to photosensitive epilepsy and visual perception?Brain2003; 126: 1164–1172.
3.
ParraJKalitzinSNLopes da SilvaFH. Photosensitivity and visually induced seizures. Curr Opin Neurol. 2005 Apr; 18(2). 155–159.
4.
KalitzinSVelisDSuffczynskiPParraJLopes da SilvaF. Electrical brain-stimulation paradigm for estimating the seizure onset site and the time to ictal transition in temporal lobe epilepsy. Clin Neurophysiol2005; 116(3): 718–728.
5.
Van Emde BoasWVelisDNBrekelmansGJFVan VeelenCWM. Temporal mesiolimbic versus temporal neocortical complex partial seizures; electroclinical correlates recorded by combined depth and subdural electrodes. Acta Neurol Scand1990; 82(suppl 133): 22–23.
6.
SayersBMBeagleyHAHenshallWR. The mechanism of auditory evoked EEG responses. Nature1974; 247: 481–483.
7.
DobieRAWilsonMJ. Objective detection of 40 Hz auditory evoked potentials: Phase coherence vs. magnitude-squared coherence. Electroencephalogr Clin Neurophysiol1994; 92: 405–413.
8.
DobieRAWilsonMJ. Phase weighting: A method to improve objective detection of steady-state evoked potentials. Hear Res1994; 79: 94–98.
9.
PictonTWDimitnjevicAJohnMSVan RoonP. The use of phase in the detection of auditory steady-state responsesClin Neurophysiol2001; 112, 1698–1711.
10.
VarelaFLachauxJPRodriguezEMartineneJ. The brain-web phase synchronization and large-scale integrationNat Rev Neurosci2001; 2229–239.
11.
LopezLSannitaWG. Magnetically recorded oscillatory responses to luminance stimulation in man. Electroencephalogr Clin Neurophysiol1997. 10491–95
12.
HerrmannCS. Human EEG responses to 1±100 Hz flicker, resonance phenomena in visual cortex and their potential correlation to cognitive phenomena. Exp Brain Res2001, 137: 346–353
13.
EngelAKFriesPSingerW. Dynamic predictions, oscillations and synchrony in top-down processingNat Rev Neurosci2001, 2: 704–716
14.
SingerW. Neuronal synchrony: A versatile code for the definition of relations?Neuron1999; 24: 49–65.
15.
SingerWGrayCM. Visual feature integration and the temporal correlation hypothesis. Annu Rev Neurosci1995; 18: 555–586.
16.
Tallon-BaudryCBertrandODelpuechCPermierJ. Oscillatory gamma-band (30±70 Hz) activity induced by a visual search task in humans. J Neurosci1997; 17: 722–734.
17.
von SteinARappelsbergerPSarntheinJPetscheH. Synchronization between temporal and parietal cortex during multimodal object processing in man. Cereb Cortex1999; 9: 137–150.
18.
KaiserJLutzenbergerW. Human gamma-band activity: A window to cognitive processing. NeuroReport2005; 16(3): 207–211.
19.
HerrmannCSMunkMHEngelAK. Cognitive functions of gamma-band activity: Memory match and utilization. Trends Cogn Sci2004; 8(8): 347–355.
20.
AlarcónGBinnieCDElwesRDPolkeyCE. Power spectrum and intracranial EEG patterns at seizure onset in partial epilepsy. Electroencephalogr Clin Neurophysiol1995; 94: 326–337.
21.
AllenPJFishDRSmithSJ. Very high-frequency rhythmic activity during SEEG suppression in frontal lobe epilepsy. Electroencephalogr Clin Neurophysiol1992; 82: 155–159.
22.
FisherRSWebberWRLesserRPArroyoSUematsuS. High frequency EEG activity at the start of seizures. J Clin Neurophysiol1992; 9: 441–448.
23.
TraubRDWhittingtonMABuhlEHLeBeauFEBibbigABoydS. A possible role for gap junctions in generation of very fast EEG oscillations preceding the onset of, and perhaps initiating, seizures. Epilepsia2001; 42: 153–170.
24.
BraginAWilsonCLAlmajanoJModyIEngelJJr. High-frequency oscillations after status epilepticus: Epileptogenesis and seizure genesis. Epilepsia2004; 45(9): 1017–1023.
25.
StabaRJWilsonCLBraginAJhungDFriedIEngelJJr. High-frequency oscillations recorded in human medial temporal lobe during sleep. Ann Neurol2004; 56(1): 108–115.
26.
BraginAModyIWilsonCLEngelJJr. Local generation of fast ripples in epileptic brain. J Neurosci20021; 22(5): 2012–2021.
27.
TraubRDJefferysJGRWhittingtonMA. Fast Oscillations in Cortical Circuits. Cambridge (MA): MIT Press; 1999.
28.
GrayCMMcCormickDA. Chattering cells: Superficial pyramidal neurons contributing to the generation of synchronous oscillations in the visual cortex. Science1996; 274: 109–113.
29.
KopellNErmentroutGBWhittingtonMATraubRD. Gamma rhythms and beta rhythms have different synchronization properties. Proc Natl Acad Sci USA2000; 97: 1867–1872.
30.
BuhlEHTamasGFisahnA. Cholinergic activation and tonic excitation induce persistent gamma oscillations in mouse somatosensory cortex in vitro. J Physiol1998; 513: 117–126.
31.
BanksMIPearceRA. Kinetic differences between synaptic and extrasynaptic GABA(A) receptors in CA1 pyramidal cells. J Neurosci2000; 20: 937–948.
32.
CossartRDinocourtCHirschJCMerchan-PerezADe FelipeJBen-AriY. Dendritic but not somatic GABAergic inhibition is decreased in experimental epilepsy. Nat Neurosci2001; 4: 52–62.
