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Spike-and-wave

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penicillin epilepsy (FGPE) are very similar to the spike-and-wave discharges of a human absence seizure. The use of rats has also been a common method for studying the spike-and-wave phenomenon. The Genetic Absence Epilepsy Rats from Strasbourg (GAERS) and the inbred Wistar Albino Glaxo rats from Rijswijk (WAG/Rij) are the two main strains of rats that have been used in studies. The rats from these two strains show spontaneously occurring absence seizures that consist of typical spike-and-wave activity seen on an EEG. Rat genetic models have given data showing that the expression of absence seizures involves both the thalamic and cortical networks. In both models, electrophysiological data showed that spike-and-waves are initiated in the somatosensory cortex and then spread rapidly to the motor cortex and thalamic nuclei. Using in vivo intracellular recordings, it was found in the GAERS that spike-and-wave are initiated in layer 5/6 neurons of the somatosensory cortex. These neurons, show a distinctive hyperactivity associated with a membrane depolarization. They are suggested to lead the firing of distant cortical cells during the epileptic discharge.
78:, recorded the first EEG of an absence seizure in the 1920s, which led the way for the general notion of spike-and-wave electrophysiology. His first recording of a human EEG was made in 1924 using a galvanometer, but his results were very crude and showed small, undefined oscillations. He continued to refine his technique and increase the sensitivity to the galvanometer, in which he accumulated many EEGs of individuals with and without a brain malfunction or disorder. Among those tested were patients with epilepsy, dementia, and brain tumors. Hans Berger published his findings in 1933, however his results did not give a definitive characterization of the general EEG pattern seen during an epileptic seizure. In 1935, F.A. Gibbs, H. Davis, and W.G. Lennox provided a clear description of EEG spike-and-wave patterns during a petit mal epileptic seizure. An intracellular recording performed by DA Pollen in 1964 revealed that the "spike" aspect of the phenomenon was associated with neuronal firing and the "wave" aspect was associated with hyperpolarization. 263:. Absence seizures are generalized epileptic seizures that can be divided into two types, typical and atypical. Typical and atypical absence seizures display two different kinds of spike-and-wave patterns. Typical absence seizures are described by generalized spike-and-wave patterns on an EEG with a discharge of 2.5 Hz or greater. They can be characterized by an increase in synchronization of discharges in the thalamocortical circuitry. They can also be characterized by the acute onset and termination of the seizure. Atypical absence seizures have a higher frequency in children with severe epilepsy that suffer from multiple types of seizures. The spike-and-wave pattern seen here is more irregular than the generalized pattern and also seems to be slower. This irregular pattern is due to non-synchronous discharges of the thalamocortical circuitry. The onset and termination in these atypical absence seizures seem to be less acute than the typical absence seizures. 196:
and juxtacellularly labeled. Medium oscillations (5–9 Hz) in both types of rats were noted to occur randomly in an unsynchronized pattern in relay and reticular neurons. However, spontaneous spike-and-wave discharges were observed in epileptic rats when the medium oscillations became synchronized, suggesting a dependence of the two. However, since medium ranged oscillations only developed into spike-and-wave discharges spontaneously, genetic factors also seem to contribute to the initiation of synchronized oscillations. These genetic factors may contribute to spike-and-wave oscillations by decreasing the action potential threshold in reticular cells, making them more excitable and potentially easier to initiate synchronized firing. Another study has shown that these medium oscillations have led to spike-and-wave discharges. The activity of the primary and secondary cortical regions, as well as the adjacent
275:(LGS) is a childhood epileptic encephalopathy characterized with generalized seizures and slow spike-wave activity while awake. LGS is a combination of atonic absences, tonic seizures, cognitive deterioration, and slow spike-wave activity in the EEG. This syndrome usually results from focal, multifocal, or diffuse brain damage and can be divided into symptomatic and cryptogenic types. Cognitive deterioration with high-frequency spike-wave activity affects most patients 2–9 years old with generalized seizures. The age of onset for LGS is between 1 and 10 years, between 2 and 6 years for symptomatic cases and 5 and 8 years for cryptogenic cases. Episodes can be triggered by modifications of treatment, which usually involves benzodiazepines, or changes in the conditions of life. 171:) in the thalamocortical network have also shown to display some role in the generation of spike-and-wave discharges (SWDs) associated with absence epilepsy. The different subtypes of mGlu receptors have a modulatory role on either excitatory or inhibitory synaptic transmission. There are conflicting hypotheses for the function of the many mGlu receptors with regards to epileptic seizures, however the role of the mGlu4 receptor is undisputed in the generation of SWDs, shown in animal models. In one study, knockout mice lacking mGlu4 receptors showed a disruption of glutamate and GABA release in the thalamocortical network and were resistant to absence seizures induced by low doses of 286:(OS), also known as early infantile epileptic encephalopathy (EIEE) with suppression-burst (S-B), is the most severe and the earliest-developing epileptic encephalopathy in children. This syndrome is characterized on an EEG by high voltage bursts and slow waves mixed with multifocal spikes alternating with almost flat suppression phases. The S-B will gradually begin to taper away at 3 months and disappear by 6 months. OS will transition to West syndrome or LGS with age. Tonic spasms are the main seizures observed in OS. Unlike LGS, the spike-and-wave pattern is consistent during both waking and sleeping states. Symptoms of OS include: 390:, and the new anti-epileptic drugs. Over the past 20 years, 15 new anti-epileptic drugs with positive outcomes have been introduced to the public. These new AEDs are aimed at improving the cost-benefit balance in AED therapy, improving tolerability profiles and reducing potential for drug interaction. Despite these major advances, there is always room for improvement, especially regarding the tailored treatment of individuals who have suffered adverse effects from older AEDs. 66:(AEDs) are commonly prescribed to treat epileptic seizures, and new ones are being discovered with fewer adverse effects. Today, most of the research is focused on the origin of the generalized bilateral spike-and-wave discharge. One proposal suggests that a thalamocortical (TC) loop is involved in the initiation spike-and-wave oscillations. Although there are several theories, the use of animal models has provided new insight on spike-and-wave discharge in humans. 179:) of normal mice protected against pentylenetetrazole induced seizures. Also, WAG/Rij rats show an increased expression of mGlu4 receptors in the nRT when compared to a control group of normal rats. These studies show that an increase in the expression and/or activity of mGlu4 receptors is associated with spike-and-wave discharges seen in absence seizures. This link between mGlur4 receptors and SWDs has led to the search for a selective mGlu4 receptor 87: 367:(AEDs) is very prevalent. AEDs aim to slow down the excess firing, associated with spike-and-wave discharges, at the beginning of seizures. They can bring about serious adverse drug reactions so physicians need to be aware of the safety and admissibility for each drug. These adverse effects are a major source of disability, morbidity, and mortality. Some of the adverse effects, such as serious cutaneous, 17: 135:, contribute to the repolarization and hyperpolarization of the membrane. In an epileptic seizure, there are periods of a sustained depolarization, which cause a train of action potentials followed by a repolarization and hyperpolarization phase. The train of action potentials constitutes the “spike” phase, and the repolarization and hyperpolarization constitute the “wave” phase. 355:. This continuous pattern during sleep, like other aspects of spike-and-wave activity, are not completely understood either. However, what is hypothesized is that corticothalamic neuronal network that is involved in oscillating sleep patterns may begin to function as a pathologic discharging source. 245:
to lower blood glucose levels by 40%. This reduction in blood glucose led to double the occurrence of spike-and-wave activity. Similar to the insulin effect, overnight fasting, where blood glucose levels were reduced by 35% also showed this double in occurrence. This model concludes that low glucose
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Another possible initiation pattern tested in rats suggested the thalamocortical (TC) loop is involved in the initiation of spike-and-wave oscillations under certain conditions. In this study, relay and reticular thalamic neurons of epileptic and non-epileptic rats were dual extracellularly recorded
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The use of animal models, such as cats, for studying spike-and-wave discharges, has provided useful data for studying epilepsy in humans. One method of inducing a seizure in a cat is to inject penicillin into the cortical region of the brain. The spike-and-wave discharges seen in feline generalized
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Another study revealed that glucose may also be relevant to spike-and-wave occurrence in mice that contained a knock-in of the human GABA(A) γ2(R43Q) mutation, which has been known to be a genetic factor involved in the causation of absence epilepsy. These absence seizure prone mice were injected
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Although there is evidence for the generation of a large EPSP, many studies have shown that synaptic inhibition remains functional during the generation of these types of paroxysmal depolarizing shifts. Also, it has been shown that a decrease in the inhibitory activity does not affect neocortical
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was introduced as the first anti-epileptic drug 150 years ago. Because of the adverse effects mentioned above, bromide is not currently in use as an AED. Early treatment discontinuation was occurring far too frequently and eventually resulted in negative effects on several patients. Current
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Ngomba, R.T; Ferraguti, F; Badura, A; Citraro, R; Santolini, I; Battaglia, G; Bruno, V; De Sarro, G; Simonyi, A; Van Luijtelaar, G; Nicoletti, F (2008). "Positive allosteric modulation of metabotropic glutamate 4 (mGlu4) receptors enhances spontaneous and evoked absence seizures".
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gene may interfere with elongo-mediated gene interaction, specifically during the developmental stages of the cortical region. This mutation may be responsible for a predisposition to spike-and-wave discharges, as well as other neurodevelopmental disorders.
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Pinault, D; Vergnes, M; Marescaux, C (2001). "Medium-voltage 5–9-Hz oscillations give rise to spike-and-wave discharges in a genetic model of absence epilepsy: In vivo dual extracellular recording of thalamic relay and reticular neurons".
351:(ESES) and found in 0.2–0.5% of all child epilepsy cases. Discharges rarely result in absence seizures, but motor impairment and neurophysiological regression have been found in CSWS. Spike-and-wave activity occupies about 85% of the 54:. Many aspects of the pattern are still being researched and discovered, and still many aspects are uncertain. The spike-and-wave pattern is most commonly researched in absence epilepsy, but is common in several epilepsies such as 151:
leads to an increase in the intracellular chloride concentration, which in non-epileptic situations would lead to an IPSP. However, in seizure-related depolarizing shifts, there is a substantial activation of postsynaptic
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were recorded using an EEG and where applied with electrical stimulation. The findings here showed that the onset of spike-and-wave discharged were followed by 5–9 Hz oscillations in these cortical regions as well.
143:) is not accepted as a general mechanism for epileptic activity. Many studies have shown that the inhibitory postsynaptic signaling is actually increased during these epileptic attacks. The activation of postsynaptic 126:
also have some effect on the depolarization of the cell, but the effect is minimal compared to the sodium channels. However, the increasing concentration of intracellular calcium leads to greater activation of
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Velazquez, Jose L. Perez; Huo, Jeanne Zhen; Dominguez, L. Garcia; Leshchenko, Yevgen; Snead Iii, O. Carter (2007). "Typical versus Atypical Absence Seizures: Network Mechanisms of the Spread of Paroxysms".
347:(CSWS), a rare form of age-related epilepsy, children between the ages of three and seven exhibit continuous spike-and-wave discharges during slow-sleep. This rare disorder is also called 1510:
Veggiotti, P; Pera, M. C; Teutonico, F; Brazzo, D; Balottin, U; Tassinari, C. A (2012). "Therapy of encephalopathy with status epilepticus during sleep (ESES/CSWS syndrome): An update".
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Timofeev, I; Grenier, F; Steriade, M (2002). "The role of chloride-dependent inhibition and the activity of fast-spiking neurons during cortical spike–wave electrographic seizures".
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Zheng, Thomas W; o'Brien, Terence J; Morris, Margaret J; Reid, Christopher A; Jovanovska, Valentina; o'Brien, Patrick; Van Raay, Leena; Gandrathi, Arun K; Pinault, Didier (2012).
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Ohtahara, Shunsuke; Yamatogi, Yasuko (2006). "Ohtahara syndrome: With special reference to its developmental aspects for differentiating from early myoclonic encephalopathy".
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Reid, Christopher A; Kim, Tae Hwan; Berkovic, Samuel F; Petrou, Steven (2011). "Low blood glucose precipitates spike-and-wave activity in genetically predisposed animals".
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Depaulis, Antoine; van Luijtelaar, Gilles (2005). "Genetic models of absence epilepsy in the rat". In Pitkänen, Asla; Schwartzkroin, Philip A.; Moshé, Solomon L. (eds.).
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Akman, Ozlem; Demiralp, Tamer; Ates, Nurbay; Onat, Filiz Yilmaz (2010). "Electroencephalographic differences between WAG/Rij and GAERS rat models of absence epilepsy".
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Giaretta, D; Avoli, M; Gloor, P (1987). "Intracellular recordings in pericruciate neurons during spike and wave discharges of feline generalized penicillin epilepsy".
106:, along the thalamocortical network. The EEG “spike” of the spike-and-wave complex corresponds to the depolarization of the neuronal membrane potential, also called a 271:
Epileptic encephalopathies are a group of conditions that result in deterioration of sensory, cognitive, and motor functions due to consistent epileptic activity.
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Loddenkemper, Tobias; Fernández, Iván Sánchez; Peters, Jurriaan M (2011). "Continuous Spike and Waves During Sleep and Electrical Status Epilepticus in Sleep".
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Pavone, Piero; Spalice, Alberto; Polizzi, Agata; Parisi, Pasquale; Ruggieri, Martino (2012). "Ohtahara syndrome with emphasis on recent genetic discovery".
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receptors, which leads to an even larger concentration of intracellular chloride concentration. This change in ion concentration gradient causes the GABA
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Ngomba, Richard Teke; Santolini, Ines; Salt, Thomas E; Ferraguti, Francesco; Battaglia, Giuseppe; Nicoletti, Ferdinando; Van Luijtelaar, Gilles (2011).
114:) in the absence of synaptic inhibition, which relayed the action potentials in the neurons by triggering activation of voltage-gated channels. The 74:
History of generalized epilepsy with absence seizures are dated to the eighteenth century, however the inventor of the electroencephalogram (EEG),
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Cohen, I; Navarro, V; Clemenceau, S; Baulac, M; Miles, R (2002). "On the Origin of Interictal Activity in Human Temporal Lobe Epilepsy in Vitro".
1165:"Rhythmic neuronal activity in S2 somatosensory and insular cortices contribute to the initiation of absence-related spike-and-wave discharges" 1296:
Szaflarski, Jerzy P; Difrancesco, Mark; Hirschauer, Thomas; Banks, Christi; Privitera, Michael D; Gotman, Jean; Holland, Scott K (2010).
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The spike-and-wave pattern seen during an absence seizure is the result of a bilateral synchronous firing of neurons ranging from the
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kindling. Therefore, the theory that spike-and-wave activity is caused by a giant EPSP due to the decrease or the absence of IPSPs (
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Meeren, Hanneke K. M; Pijn, Jan Pieter M; Van Luijtelaar, Egidius L. J. M; Coenen, Anton M. L; Lopes Da Silva, Fernando H (2002).
1668: 872:"Metabotropic glutamate receptors in the thalamocortical network: Strategic targets for the treatment of absence epilepsy" 164:, leading to an efflux of the chloride ions. This leads to a decreased amplitude or even reversed polarity of the IPSPs. 128: 39:, also known as ‘petit mal’ epilepsy. The basic mechanisms underlying these patterns are complex and involve part of the 140: 1111:"Deep Layer Somatosensory Cortical Neurons Initiate Spike-and-Wave Discharges in a Genetic Model of Absence Seizures" 919:"Modulation of Absence Seizures by the GABAAReceptor: A Critical Role for Metabotropic Glutamate Receptor 4 (mGluR4)" 111: 312: 1689: 132: 371:
and hepatic events, usually require withdrawal in children and place a heavy burden on the costs of healthcare.
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levels could be a potential trigger for absence seizures, and could be an environmental risk factor for humans.
110:(PDS). The initial understanding behind the mechanism of the PDS was that it was caused by a very large EPSP ( 123: 107: 352: 115: 642:
Pollen, D. A (1964). "Intracellular Studies of Cortical Neurons During Thalamic Induced Wave and Spike".
35:. A spike-and-wave discharge is a regular, symmetrical, generalized EEG pattern seen particularly during 1057:"Cortical Focus Drives Widespread Corticothalamic Networks during Spontaneous Absence Seizures in Rats" 176: 44: 20:
EEG recording of generalized 3 Hz spike-and-wave discharges seen in a child during an absence seizure
828:"Disruption of Inhibition in Area CA1 of the Hippocampus in a Rat Model of Temporal Lobe Epilepsy" 183:(which will block these receptors) as a potential new drug for the treatment of absence epilepsy. 272: 55: 1600: 826:
Denslow, Maria J; Eid, Tore; Du, Fu; Schwarcz, Robert; Lothman, Eric W; Steward, Oswald (2001).
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Bursts of generalized spike-and-wave discharges lasting two seconds or longer is considered an
175:. Another study showed that bilateral injection of a mGlu4 receptor antagonist into the nRT ( 1394: 213:) has been identified as a key component in the transcription of genes known to regulate the 738: 28: 90:
A drawing of the human brain showing the thalamus and cortex relative to other structures.
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Reoccurrence after a solitary unprovoked seizure in children is about 50%, so the use of
180: 1298:"Cortical and subcortical contributions to absence seizure onset examined with EEG/fMRI" 742: 1641: 1581: 1535: 1492: 1449: 1406: 1322: 1297: 1278: 1232: 1137: 1110: 1083: 1073: 1056: 1037: 994: 945: 935: 918: 808: 762: 706: 681: 619: 594: 575: 532: 483: 434: 172: 161: 1569: 796: 520: 1664: 1633: 1619: 1573: 1527: 1484: 1441: 1437: 1398: 1363: 1359: 1327: 1270: 1266: 1224: 1186: 1181: 1164: 1142: 1088: 1029: 1025: 986: 982: 950: 893: 888: 871: 849: 800: 754: 711: 659: 655: 624: 610: 595:"A brief history on the oscillating roles of thalamus and cortex in absence seizures" 567: 524: 475: 426: 422: 283: 59: 1645: 1585: 1539: 1453: 1282: 1236: 1041: 998: 766: 579: 536: 487: 1623: 1615: 1601:"Safety and Tolerability of Antiepileptic Drug Treatment in Children with Epilepsy" 1565: 1556:
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Bazhenov, Maxim; Timofeev, Igor; Fröhlich, Flavio; Sejnowski, Terrence J (2008).
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The first spike-and-wave pattern was recorded in the early twentieth century by
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Guerrini, Renzo; Zaccara, Gaetano; La Marca, Giancarlo; Rosati, Anna (2012).
750: 232:. Hypotheses have been made that a mutation in the non-coding region of the 1637: 1577: 1531: 1488: 1445: 1402: 1367: 1331: 1274: 1228: 1190: 1146: 1092: 990: 954: 897: 853: 804: 758: 715: 663: 628: 571: 528: 430: 387: 217: 1523: 1033: 563: 479: 471: 86: 75: 51: 1628: 368: 550:
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cause transitory sodium current into the cell, which generates the
103: 32: 679: 374: 242: 1344: 913: 168: 1054: 131:. These calcium-activated potassium channels, along with the 16: 1598: 214: 144: 1509: 967: 917:; Banerjee, P. K; Burnham, Mcintyre; Hampson, David (2000). 869: 728: 682:"Cellular and network mechanisms of electrographic seizures" 458:(1995). "Basic mechanisms of generalized absence seizures". 1206: 1108: 210: 1466: 1162: 228:
has been linked the gene to a centrotemporal sharp spike
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632: 622: 590: 584: 583: 547: 541: 540: 503: 492: 491: 452: 443: 442: 406: 255:Absence epilepsy 120:action potential 37:absence epilepsy 1705: 1704: 1700: 1699: 1698: 1696: 1695: 1694: 1680: 1679: 1678: 1671: 1657: 1653: 1603: 1597: 1593: 1554: 1547: 1508: 1504: 1465: 1461: 1422: 1418: 1379: 1375: 1343: 1339: 1294: 1290: 1251: 1244: 1205: 1198: 1175:(11): 1948–58. 1161: 1154: 1107: 1100: 1053: 1049: 1010: 1006: 966: 962: 929:(16): 6218–24. 912: 905: 868: 861: 824: 820: 781: 774: 727: 723: 678: 671: 640: 636: 591: 587: 548: 544: 504: 495: 453: 446: 417:(2–3): 185–93. 407: 400: 396: 361: 341: 290:Genetic defects 281: 269: 261:absence seizure 257: 252: 207: 189: 159: 155: 148: 100:cerebral cortex 84: 82:Pathophysiology 72: 41:cerebral cortex 12: 11: 5: 1703: 1693: 1692: 1677: 1676: 1669: 1651: 1591: 1564:(9): 792–802. 1545: 1502: 1459: 1416: 1373: 1354:(8): 1585–93. 1337: 1288: 1242: 1196: 1152: 1121:(24): 6590–9. 1098: 1067:(4): 1480–95. 1047: 1014:Brain Research 1004: 960: 903: 882:(7): 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1264: 1261:(1): 115–20. 1260: 1256: 1249: 1247: 1238: 1234: 1230: 1226: 1222: 1218: 1215:(2): 154–64. 1214: 1210: 1203: 1201: 1192: 1188: 1183: 1178: 1174: 1170: 1166: 1159: 1157: 1148: 1144: 1139: 1134: 1129: 1124: 1120: 1116: 1112: 1105: 1103: 1094: 1090: 1085: 1080: 1075: 1070: 1066: 1062: 1058: 1051: 1043: 1039: 1035: 1031: 1027: 1023: 1019: 1015: 1008: 1000: 996: 992: 988: 984: 980: 977:(2): 344–54. 976: 972: 964: 956: 952: 947: 942: 937: 932: 928: 924: 920: 916: 910: 908: 899: 895: 890: 885: 881: 877: 873: 866: 864: 855: 851: 846: 841: 837: 833: 829: 822: 814: 810: 806: 802: 798: 794: 790: 786: 779: 777: 768: 764: 760: 756: 752: 748: 744: 740: 736: 732: 725: 717: 713: 708: 703: 699: 695: 691: 687: 683: 676: 674: 665: 661: 657: 653: 649: 645: 638: 630: 626: 621: 616: 612: 608: 605:(5): 779–89. 604: 600: 596: 589: 581: 577: 573: 569: 565: 561: 558:(4): 522–42. 557: 553: 546: 538: 534: 530: 526: 522: 518: 514: 510: 502: 500: 498: 489: 485: 481: 477: 473: 469: 466:(2): 146–57. 465: 461: 457: 451: 449: 440: 436: 432: 428: 424: 420: 416: 412: 405: 403: 398: 391: 389: 385: 384:valproic acid 381: 376: 372: 370: 366: 356: 354: 350: 346: 333: 330: 327: 322: 319: 316: 314: 311: 310: 308: 303: 302: 300: 295: 294: 292: 289: 288: 287: 285: 276: 274: 264: 262: 247: 244: 238: 235: 231: 227: 223: 219: 216: 212: 202: 199: 193: 184: 182: 178: 174: 170: 165: 163: 150: 142: 136: 134: 130: 125: 121: 117: 113: 109: 105: 101: 98:(part of the 97: 88: 79: 77: 67: 65: 61: 57: 53: 48: 46: 42: 38: 34: 30: 26: 18: 1660: 1654: 1611: 1607: 1594: 1561: 1557: 1515: 1511: 1505: 1472: 1468: 1462: 1429: 1425: 1419: 1386: 1382: 1376: 1351: 1347: 1340: 1305: 1301: 1291: 1258: 1254: 1212: 1208: 1172: 1168: 1118: 1114: 1064: 1060: 1050: 1020:(1): 68–79. 1017: 1013: 1007: 974: 970: 963: 926: 922: 879: 875: 835: 831: 821: 788: 785:Neuroscience 784: 734: 730: 724: 692:(1): 45–57. 689: 685: 647: 643: 637: 602: 598: 588: 555: 551: 545: 512: 509:Neuroscience 508: 463: 459: 414: 410: 388:ethosuximide 373: 362: 348: 344: 342: 282: 270: 258: 239: 233: 225: 218:cytoskeleton 208: 194: 190: 166: 137: 93: 73: 49: 24: 23: 1629:2158/647763 1608:Drug Safety 1518:(1): 1–11. 76:Hans Berger 52:Hans Berger 1432:: S58–67. 394:References 181:antagonist 58:(LGS) and 1383:Epilepsia 1348:Epilepsia 1255:Epilepsia 1169:Epilepsia 876:Epilepsia 599:Epilepsia 380:phenytoin 230:phenotype 149:receptors 102:) to the 96:neocortex 1684:Category 1646:46638862 1638:22702637 1586:25540685 1578:22832500 1540:31107327 1532:22426353 1489:21967765 1454:38268884 1446:16829045 1403:11520318 1389:: 23–6. 1368:17484751 1332:20580319 1283:23856435 1275:21175610 1237:16679450 1229:21399511 1191:23083325 1147:17567820 1093:11850474 1042:24544393 999:25229534 991:18022649 955:10934271 898:21569017 854:11698514 805:12379264 767:28066491 759:12434059 716:19190736 664:14236822 629:22360294 580:30664678 572:11600799 537:34005173 529:11483311 488:21233781 431:20092980 321:Agenesis 222:motility 104:thalamus 1497:6304812 1411:6494524 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The 70:History 1667:  1644:  1636:  1584:  1576:  1538:  1530:  1495:  1487:  1452:  1444:  1409:  1401:  1366:  1330:  1320:  1281:  1273:  1235:  1227:  1189:  1145:  1135:  1091:  1081:  1040:  1032:  997:  989:  953:  943:  896:  852:  811:  803:  765:  757:  714:  704:  662:  627:  617:  578:  570:  535:  527:  486:  478:  437:  429:  169:mGluRs 43:, the 1642:S2CID 1604:(PDF) 1582:S2CID 1536:S2CID 1493:S2CID 1450:S2CID 1407:S2CID 1279:S2CID 1233:S2CID 1038:S2CID 995:S2CID 809:S2CID 763:S2CID 576:S2CID 533:S2CID 484:S2CID 435:S2CID 241:with 215:actin 1665:ISBN 1634:PMID 1574:PMID 1528:PMID 1485:PMID 1442:PMID 1399:PMID 1364:PMID 1328:PMID 1271:PMID 1225:PMID 1187:PMID 1143:PMID 1089:PMID 1030:PMID 987:PMID 951:PMID 894:PMID 850:PMID 801:PMID 755:PMID 712:PMID 660:PMID 625:PMID 568:PMID 525:PMID 476:PMID 427:PMID 234:ELP4 226:ELP4 211:ELP4 152:GABA 145:GABA 1624:hdl 1616:doi 1566:doi 1520:doi 1477:doi 1434:doi 1391:doi 1356:doi 1318:PMC 1310:doi 1263:doi 1217:doi 1177:doi 1133:PMC 1123:doi 1079:PMC 1069:doi 1022:doi 1018:405 979:doi 941:PMC 931:doi 884:doi 840:doi 793:doi 789:114 747:doi 735:298 702:PMC 694:doi 652:doi 615:PMC 607:doi 560:doi 517:doi 513:105 468:doi 419:doi 343:In 1686:: 1640:. 1632:. 1622:. 1612:35 1610:. 1606:. 1580:. 1572:. 1562:11 1560:. 1548:^ 1534:. 1526:. 1516:14 1514:. 1491:. 1483:. 1473:34 1471:. 1448:. 1440:. 1430:70 1428:. 1405:. 1397:. 1387:42 1385:. 1362:. 1352:48 1350:. 1326:. 1316:. 1306:18 1304:. 1300:. 1277:. 1269:. 1259:52 1257:. 1245:^ 1231:. 1223:. 1213:28 1211:. 1199:^ 1185:. 1173:53 1171:. 1167:. 1155:^ 1141:. 1131:. 1119:27 1117:. 1113:. 1101:^ 1087:. 1077:. 1065:22 1063:. 1059:. 1036:. 1028:. 1016:. 993:. 985:. 975:54 973:. 949:. 939:. 927:20 925:. 921:. 906:^ 892:. 880:52 878:. 874:. 862:^ 848:. 836:86 834:. 830:. 807:. 799:. 787:. 775:^ 761:. 753:. 745:. 733:. 710:. 700:. 688:. 684:. 672:^ 658:. 648:17 646:. 623:. 613:. 603:53 601:. 597:. 574:. 566:. 556:44 554:. 531:. 523:. 511:. 496:^ 482:. 474:. 464:37 462:. 447:^ 433:. 425:. 415:89 413:. 401:^ 386:, 382:, 62:. 1673:. 1648:. 1626:: 1618:: 1588:. 1568:: 1542:. 1522:: 1499:. 1479:: 1456:. 1436:: 1413:. 1393:: 1370:. 1358:: 1334:. 1312:: 1285:. 1265:: 1239:. 1219:: 1193:. 1179:: 1149:. 1125:: 1095:. 1071:: 1044:. 1024:: 1001:. 981:: 957:. 933:: 900:. 886:: 856:. 842:: 815:. 795:: 769:. 749:: 741:: 718:. 696:: 690:5 666:. 654:: 631:. 609:: 582:. 562:: 539:. 519:: 490:. 470:: 441:. 421:: 158:A 154:A 147:A

Index


electroencephalogram
epileptic seizures
absence epilepsy
cerebral cortex
thalamocortical network
Hans Berger
Lennox-Gastaut syndrome
Ohtahara syndrome
Antiepileptic drugs
Hans Berger

neocortex
cerebral cortex
thalamus
paroxysmal depolarizing shift
excitatory postsynaptic potential
voltage-gated sodium channels
action potential
voltage-gated calcium channels
calcium-activated potassium channels
voltage-gated potassium channels
inhibitory postsynaptic potentials
GABAA receptors
reversal potential
mGluRs
pentylenetetrazole
thalamic reticular nucleus
antagonist
insular cortex

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