Abstract：
:The purpose of this study is to propose and investigate a new approach for discriminating between focal and non-focal hemispheres in intractable temporal lobe epilepsy, based on applying multivariate time series analysis to the discharge-free background brain activity observed in nocturnal electrocorticogram (ECoG) time series. Five unilateral focal patients and one bilateral focal patient were studied. In order to detect the location of epileptic foci, linear multivariate autoregressive (MAR) models were fitted to the ECoG data; as a new approach for the purpose of summarizing these models in a single relevant parameter, the behavior of the corresponding impulse response functions was studied and described by an attenuation coefficient. In the majority of unilateral focal patients, the averaged attenuation coefficient was found to be almost always significantly larger in the focal hemisphere, as compared to the non-focal hemisphere. Also the amplitude of the fluctuations of the attenuation coefficient was significantly larger in the focal hemisphere. Moreover, in one patient showing a typical regular sleep cycle, the attenuation coefficient in the focal hemisphere tended to be larger during REM sleep and smaller during Non-REM sleep. In the bilateral focal patient, no statistically significant distinction between the hemispheres was found. This study provides encouraging results for new investigations of brain dynamics by multivariate parametric modeling. It opens up the possibility of relating diseases like epilepsy to the properties of inconspicuous background brain dynamics, without the need to record and analyze epileptic seizures or other evidently pathological waveforms.
journal_name
Epilepsy Resjournal_title
Epilepsy researchauthors
Miwakeichi F,Galka A,Uchida S,Arakaki H,Hirai N,Nishida M,Maehara T,Kawai K,Sunaga S,Shimizu Hdoi
10.1016/j.eplepsyres.2004.06.003subject
Has Abstractpub_date
2004-09-01 00:00:00pages
73-87issue
1-3eissn
0920-1211issn
1872-6844pii
S0920-1211(04)00111-1journal_volume
61pub_type
杂志文章abstract：:Metalloproteinase 9 (MMP9) is a member of a family of enzymes that mediate the degradation of extracellular matrix proteins, and is especially involved in blood-brain barrier maintenance. Increased levels of MMP9 have been observed in many neurological disorders, including epilepsy, suggesting it may be involved in th...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2016.11.006
更新日期：2017-01-01 00:00:00
abstract：:The aim of this study was to assess the anticonvulsant effect of carbon dioxide (CO2) on Scn1a mutation-related febrile seizures. We examined physiological changes in the blood gas levels after the induction of hyperthermia-induced seizures (HISs), which were associated with the Scn1a missense mutation. We determined ...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2013.01.003
更新日期：2013-07-01 00:00:00
abstract：PURPOSE:To study the extent and characteristics of dietary and herbal supplements use in a large cohort of adult patients with epilepsy. METHODS:This prospective study included 490 patients receiving care at a university epilepsy clinic. A number of variables, including demographics, characteristics of epilepsy and it...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2019.106168
更新日期：2019-10-01 00:00:00
abstract：PURPOSE:Cryptogenic focal epilepsy (CFE) is a heterogeneous clinical disorder including patients with severe refractory forms and patients with a fairly good prognosis. Predictors of prognosis in CFE are poorly understood. The aim of this retrospective study is to identify long-term (5-year) prognostic predictors in pa...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2013.07.004
更新日期：2013-11-01 00:00:00
abstract：OBJECTIVES:Perampanel, a selective, noncompetitive AMPA receptor antagonist, is indicated as adjunctive therapy for the treatment of partial seizures with or without secondarily generalized seizures and primary generalized tonic-clonic seizures in patients with epilepsy aged 12years and older. In vitro studies and Phas...
journal_title：Epilepsy research
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.eplepsyres.2017.04.018
更新日期：2017-08-01 00:00:00
abstract：AIM:Seizures originating from the parietal lobe can demonstrate variable semiology. Our aim was to describe the electroclinical features of seizures originating from the mesial parietal lobe. METHOD:We identified four patients through the Comprehensive Epilepsy Program at our institution, who had strong evidence of a ...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2014.09.011
更新日期：2014-12-01 00:00:00
abstract：:To assess whether epileptic children have abnormal values of some trace elements, the aim of this preliminary study was to assess the serum zinc (Zn), copper (Cu), iron (Fe), and chromium (Cr) concentrations in 23 children with initial recognition of epilepsy before beginning of pharmacological therapy in comparison w...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2012.09.009
更新日期：2013-03-01 00:00:00
abstract：PURPOSE:Although absence epilepsy is considered to be a prototypic type of generalized epilepsy, it is still under debate whether generalized 3 Hz spike-and-wave discharges (SWDs) might have a cortical focal origin. Here it is investigated whether focal interictal epileptiform discharges (IEDs), which typically occur i...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2015.11.013
更新日期：2016-01-01 00:00:00
abstract：:Here we describe a new non-human primate model of temporal lobe epilepsy (TLE) to better investigate the cause/effect relationships of human TLE. Status epilepticus (SE) was induced in adult marmosets by pilocarpine injection (250mg/kg; i.p.). The animals were divided in 2 groups: acute (8h post-SE) and chronic (3 and...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2011.04.015
更新日期：2011-09-01 00:00:00
abstract：:Tiagabine is a novel antiepileptic drug which has clinical efficacy against complex refractory and myoclonic seizures. The anticonvulsant mechanism of action of tiagabine results from its blockade of neuronal and glial GABA-uptake, thereby increasing GABA levels in the synaptic cleft. Here we present a comparison of t...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/s0920-1211(97)00031-4
更新日期：1997-07-01 00:00:00
abstract：:Uncomplicated childhood-onset epilepsy is associated with increased brain amyloid load at late middle age, but its possible association with Alzheimer-type neurodegenerative processes is unclear. After 50-year follow-up, 42 childhood onset epilepsy subjects and 45 matched controls were investigated with [18F]fluorodeo...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2017.09.006
更新日期：2017-11-01 00:00:00
abstract：OBJECTIVE:In Rasmussen syndrome (RS), in addition to the predominant involvement of cytotoxic T cells, heterogeneous autoantibodies against neural molecules are also found, but their function has not been elucidated. We examined antibodies to N-methyl-d-aspartate (NMDA) type glutamate receptor (GluR) subunits (GluN2B &...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2015.03.004
更新日期：2015-07-01 00:00:00
abstract：INTRODUCTION:The anticonvulsant effects of melatonin (MT) have been demonstrated in several different experimental seizure models. Thus, the present study aimed to determine the anticonvulsant efficacy of MT, the optimum time for its administration prior to the induction of a seizure, and its effective dose in a rat mo...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2015.11.004
更新日期：2015-12-01 00:00:00
abstract：PURPOSE:Indoleamine 2,3-dioxygenase (IDO) is a cytokine-inducible enzyme that participates in tryptophan (trp) and serotonin metabolism with an ability to modulate neuroinflammation. Several recent studies have shown associations between cytokines and epilepsy. In this study we investigated whether activation of IDO is...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2011.02.003
更新日期：2011-05-01 00:00:00
abstract：:Temporal lobe epilepsy (TLE) has been modeled in mice using pilocarpine induction, with variable results depending on specific strains. To allow efficient xenotransplantation for the purpose of optimizing potential cell-based therapy of human TLE, we have determined the optimal dosing strategy to produce spontaneous r...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2014.10.016
更新日期：2015-01-01 00:00:00
abstract：BACKGROUND:When pharmacotherapy for epilepsy fails, surgical options, although efficacious, are highly invasive. We explored whether ablation of the cerebral cortex can be performed utilizing the cerebral venous system. METHODS:Mapping and radiofrequency ablation was performed via the venous system in two pigs. RESUL...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2008.03.023
更新日期：2008-08-01 00:00:00
abstract：:There is increasing clinical and experimental evidence that hormones, in particular sex steroid hormones, influence neuronal excitability and other brain functions. The term 'neuroactive steroids' has been coined for steroids that interact with neurotransmitter receptors. One of the best characterized actions of neuro...
journal_title：Epilepsy research
pub_type： 杂志文章,评审
doi：10.1016/s0920-1211(01)00194-2
更新日期：2001-05-01 00:00:00
abstract：:The ketogenic diet (KD) increased the expression of calbindin-D(28k) (CB) in the interneurons of the hippocampus compared with the normal diet (ND)-fed mice. Also, 2 days after kainic acid (KA) administration, numerous CB-expressing astrocytes were found in the KD-fed mice compared with those of the ND-fed mice. These...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2005.05.008
更新日期：2005-07-01 00:00:00
abstract：:The effect of repetitive administration of naloxone on the development of massed amygdaloid kindling in 'encéphale isolé' cats was studied. Electrical amygdaloid kindling was carried out with a 15 min inter-stimulus interval (ISI) in a control situation with intravenous (i.v.) naloxone administration (2, 4, and 8 mg/k...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/0920-1211(89)90058-2
更新日期：1989-07-01 00:00:00
abstract：AIM:This cross-sectional study examined whether growth parameters were associated with epilepsy in children living in a rural community in sub-Saharan Africa (SSA). MATERIALS AND METHODS:A cross-sectional study was performed in the Hai District Demographic Surveillance Site (HDSS), Tanzania in which 6-14 year old chil...
journal_title：Epilepsy research
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.eplepsyres.2014.06.014
更新日期：2014-10-01 00:00:00
abstract：AIM:Vitamin D (Vit D) has been considered as a neurosteroid and has a pivotal role in neuroprotection including epilepsy. Vit D regulator acts via a Vit D receptor (VDR). WAG/Rij rats have a genetically epileptic model of absence epilepsy with comorbidity of depression. The aim of the present study was to investigate t...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2019.106208
更新日期：2019-11-01 00:00:00
abstract：:Huperzine A (HupA) is a naturally occurring compound found in the firmoss Huperzia serrata. While HupA is a potent acetylcholinesterase inhibitor, its full pharmacologic profile is incompletely described. Since previous works suggested a capacity for HupA to prophylax against seizures, we tested the HupA antiepileptic...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2015.08.012
更新日期：2015-11-01 00:00:00
abstract：:Four patients with complex partial seizure disorder whose positron emission tomography (PET) scans show sustained hyperperfusion of the epileptiform focus 12-24 h after a seizure episode are presented. Three of these patients underwent same day Fluorine-18 (18F) deoxyglucose (FDG) PET scans, which showed hypometabolis...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/s0920-1211(00)00135-2
更新日期：2000-12-01 00:00:00
abstract：:Opioid peptide release was monitored in the amygdala and hippocampus of freely moving rats following a single oral administration of gabapentin using microdialysis. Extracellular opioid peptide levels were elevated above basal levels in the amygdala within the first 60 (54%) and 90 min (68%) after gabapentin administr...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/s0920-1211(98)00121-1
更新日期：1999-05-01 00:00:00
abstract：:The role of N-methyl-D-aspartate (NMDA) in the development and expression of kindled seizures was assessed using a crossover design. Rats were stimulated once daily in the perforant path for 10 consecutive days 30 min following daily administration of saline or the NMDA antagonist MK-801 (1.0 mg/kg) (phase I). Five to...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/0920-1211(94)90014-0
更新日期：1994-02-01 00:00:00
abstract：:The present study intends to identify factors that predict postoperative clinical outcome in patients with gangliogliomas (GG) and dysembryoplastic neuroepithelial tumors (DNT). We evaluated the medical records of 45 patients with GG and 13 patients with DNT, treated surgically between 1985 and 1995. We assessed sever...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/s0920-1211(00)00208-4
更新日期：2001-03-01 00:00:00
abstract：PURPOSE:Intracranial EEG in patients with lesional lateral temporal lobe epilepsy is rarely reported. Therefore, the number of patients with seizures arising independently from ipsilateral mesial structures or contralateral hemisphere has not been clarified. We analyzed the intracranial EEG of cases with localized lesi...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2007.10.009
更新日期：2008-01-01 00:00:00
abstract：PURPOSE:To identify clinical risk factors for Dravet syndrome (DS) in a population of children with status epilepticus (SE). MATERIAL AND METHODS:Children aged between 1 month and 16 years with at least one episode of SE were referred from 6 pediatric neurology centers in Switzerland. SE was defined as a clinical seiz...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2014.02.019
更新日期：2014-05-01 00:00:00
abstract：:Levetiracetam (LEV), a newer antiepileptic drug (AED) useful for several epilepsy syndromes, binds to SV2A. Identifying genetic variants that influence response to LEV may allow more tailored use of LEV. Obvious candidate genes are SV2A, SV2B and SV2C, which encode the only known binding site, synaptic vesicle protein...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2008.09.003
更新日期：2009-01-01 00:00:00
abstract：INTRODUCTION:Grammar is a core component of the language system, yet it is rarely assessed during the Wada (intracarotid amobarbital) test. It is hypothesized that adding grammar tests to the recovery phase of the Wada test will increase our ability to lateralize language function. METHOD:Sixteen individuals (nine fem...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2014.09.014
更新日期：2014-12-01 00:00:00
