Abstract：
:Photosensitive epilepsy (PSE) offers a highly reproducible model to investigate whether changes in neuronal activity preceding the transition to an epileptic photoparoxysmal response (PPR) may be detected. We investigated this possibility in patients with idiopathic PSE using MEG, as well as normal controls and non-photosensitive epileptic patients of the same age group. Spectral analysis of the MEG signals recorded during intermittent light stimulation revealed relevant information in the phase spectrum. To quantify this effect, we introduced a second order response feature of the stimulus-triggered visual response preceding the PPR: the phase clustering index, which measures how close the phases of successive periods are grouped for each frequency component for all periods of the stimuli applied. We found that an enhancement of phase synchrony in the gamma-band (30-120Hz), harmonically related to the frequency of stimulation, preceded the stimulation trials that evolved into PPRs, and differed significantly from that encountered in trials not followed by PPR or in control subjects. Thus this index can be considered a valuable index of the pro-ictal transition to seizures in photosensitive epilepsy.
journal_name
Epilepsy Resjournal_title
Epilepsy researchauthors
Lopes da Silva FH,Harding GFdoi
10.1016/j.eplepsyres.2011.10.022subject
Has Abstractpub_date
2011-12-01 00:00:00pages
278-82issue
3eissn
0920-1211issn
1872-6844pii
S0920-1211(11)00330-5journal_volume
97pub_type
杂志文章abstract：:The development of epilepsy and a progressive increase in susceptibility to seizures may involve changes in inhibitory and excitatory systems from the beginning of the process. The present study was focused to analyze the opioid peptide changes induced by a chemical sub-convulsant stimulation. Experiments were carried...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/s0920-1211(99)00056-x
更新日期：1999-11-01 00:00:00
abstract：:Epilepsy - the world's most common serious brain disorder - is defined by recurrent unprovoked seizures that result from complex interactions between distributed neural populations. We explore some macroscopic characteristics of emergent ictal networks by considering intracranial recordings from human subjects with in...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2008.02.002
更新日期：2008-05-01 00:00:00
abstract：BACKGROUND:Little is known, so far, about the cerebral structural abnormalities in drug-naïve patients with childhood absence epilepsy (CAE). We aimed to investigate regional grey matter (GM) volume differences using voxel-based morphometry (VBM) in patients and closely matched healthy control subjects. METHODS:Twenty...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2016.05.003
更新日期：2016-08-01 00:00:00
abstract：OBJECTIVES:To evaluate the agreement between magnetoencephalography (MEG) and intracranial electroencephalography (ICEEG) results, to determine the characteristics that lead to concordance, and to assess how these factors relate to favorable epilepsy surgery outcome. MATERIALS:This retrospective study reviewed 50 pati...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2014.08.016
更新日期：2014-11-01 00:00:00
abstract：:Kindling, in the classical sense, involves progressively increasing responsivity to the intermittent repetition of the same 1-s subthreshold electrical stimulation over time, with the amygdala being the area most frequently studied. Such repeated subthreshold stimulation is associated with: lowering of the after-disch...
journal_title：Epilepsy research
pub_type： 杂志文章,评审
doi：10.1016/s0920-1211(02)00081-5
更新日期：2002-06-01 00:00:00
abstract：PURPOSE:To describe the clinical findings in a family with a benign form of mesial temporal lobe epilepsy and to identify the causative genetic factors. METHODS:All participants were personally interviewed and underwent neurologic examination. The affected subjects underwent EEG and most of them neuroradiological exam...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2013.11.002
更新日期：2014-02-01 00:00:00
abstract：:The limbic/mesial temporal lobe epilepsy syndrome has been defined as a focal epilepsy, with the implication that there is a well defined focus of onset, traditionally centered around the hippocampus. The pathology of the hippocampus in this syndrome has been well described and a number of physiological abnormalities ...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/s0920-1211(98)00051-5
更新日期：1998-09-01 00:00:00
abstract：:Single photon emission computed tomography (SPECT) has frequently been used to investigate cerebral brain perfusion (CBP) occurring ictally and inter-ictally in epileptic patients. Several studies have addressed the multimodal analysis of the modifications occurring in cerebral areas involved in seizure activity, by c...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/s0920-1211(00)00111-x
更新日期：2000-06-01 00:00:00
abstract：:The present study aimed at investigating to what extent the regulation of excitability in cortical networks, as indicated by surface-negative slow cortical potentials (SCPs), is impaired in epileptic patients and to what extent training of SCP self-regulation by means of biofeedback and instrumental learning procedure...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/0920-1211(93)90075-i
更新日期：1993-01-01 00:00:00
abstract：BACKGROUND:Diffusion tensor tractography of the anterior extent of the optic radiation - Meyer's loop - prior to temporal lobe resection (TLR) may reduce the risk for postoperative visual field defect. Currently there is no standardized way to perform tractography. OBJECTIVE:To visualize Meyer's loop using determinist...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2014.01.017
更新日期：2014-03-01 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：OBJECTIVE:The aim of this study was to investigate whether there may be a correlation between the anatomical variants of Circle of Willis (CoW) and presence/laterality of mesial temporal sclerosis (MTS). METHODS:We retrospectively identified the CoW variants on Wada angiograms in 71 patients with pathologically proven...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2017.02.017
更新日期：2017-05-01 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：:This study aimed to assess neuropsychiatric comorbidities and analyze risk factors in Chinese children with epilepsy. Children with epilepsy aged between 6 and 16 years from the Children's Hospital of Fudan University were included. Children with asthma and typically developing children were matched for age and gender...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2017.11.011
更新日期：2018-02-01 00:00:00
abstract：:In a selected group of temporal lobe epilepsy patients with seizures refractory to pharmacological treatment, pharmacological seizure control can be attained by surgical resection of the epileptic zone. We investigated to what extent pharmaco-resistance is reflected in a reduced response at the cellular level, in neur...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/s0920-1211(98)00061-8
更新日期：1998-09-01 00:00:00
abstract：PURPOSE:The present study was planned as there is paucity of outcome data of children with infantile spasms, from India where profile of patients is different from the western world. Moreover, most previous studies have either not used strict inclusion criteria or standardized psychometric tests for developmental outco...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2013.12.009
更新日期：2014-03-01 00:00:00
abstract：:A brief review of kindling is provided, which highlights some important points of historical interest often overlooked by researchers. These points include the fact that the original rating scale of convulsive seizures presented by Racine 'EEG Clin. Neurophysiol 32 (1972) 281'. was based on amygdala kindling, and may ...
journal_title：Epilepsy research
pub_type： 杂志文章,评审
doi：10.1016/s0920-1211(02)00071-2
更新日期：2002-06-01 00:00:00
abstract：:A single-dose study of the beta-carboline, ZK 95962, on photosensitive generalized paroxysmal activity in the EEG was conducted in 6 patients with primary generalized epilepsy. Four of the patients were newly diagnosed and did not receive any antiepileptic drug or other medication during the study. Two were receiving ...
journal_title：Epilepsy research
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1016/0920-1211(90)90032-q
更新日期：1990-03-01 00:00:00
abstract：:In the present study, L-pGlu-(1-benzyl)-L-His-L-ProNH(2) (NP-355), a newer CNS active thyrotropin-releasing hormone (TRH) analog was evaluated for its antiepileptic potential. NP-355 (5, 10 and 20 micromol/kg; i.v.) pretreatment significantly delayed onset and reduced the frequency of convulsions in pentylenetetrazole...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2009.09.007
更新日期：2009-12-01 00:00:00
abstract：:Comorbid conditions may affect the quality of life in persons with epilepsy (PWE) more than seizures. Using legally mandated healthcare encounter data, somatic, psychiatric, and neurodevelopmental comorbidities in a large population-based cohort of PWE, were compared to persons with migraine (PWM), a similar neurologi...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2013.12.002
更新日期：2014-02-01 00:00:00
abstract：:The present study investigated whether pharmacological stimulation of the GABAergic system can affect attention. The effects of vigabatrin, a novel antiepileptic drug, on the performance of rats in a 5-choice serial reaction time task assessing selective attention were studied. The effects of acute (100, 300, 500 and ...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/0920-1211(92)90057-z
更新日期：1992-12-01 00:00:00
abstract：:The ketogenic diet (KD) remains a therapy in search of explanation although it is an established treatment of intractable epilepsy. Recent studies suggest that the KD may be both anticonvulsant and antiepileptogenic. Epileptic seizures have been shown to stimulate the proliferation rate of neuronal progenitor cells in...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2007.11.010
更新日期：2008-02-01 00:00:00
abstract：OBJECTIVE:Approximately 80% of glioma patients will experience at least one seizure activity during the course of the disease, and because the etiology of glioma-related seizure is most likely multifactorial and complex, it remains poorly understood. MicroRNAs are a class of small noncoding RNAs that function as critic...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2016.08.005
更新日期：2016-11-01 00:00:00
abstract：BACKGROUND:Previous studies have identified numerous biological, psychological and social characteristics of persons with psychogenic non-epileptic seizures (PNES) however the strength of many of these factors have not been evaluated to determine which are predictive of the diagnosis compared to those that may only be ...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2014.09.003
更新日期：2014-11-01 00:00:00
abstract：:Mutations in GABRG2, which encodes the γ2 subunit of GABAA receptors, can cause both genetic epilepsy with febrile seizures plus (GEFS+) and Dravet syndrome. Most GABRG2 truncating mutations associated with Dravet syndrome result in premature termination codons (PTCs) and are stably translated into mutant proteins wit...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2013.12.005
更新日期：2014-03-01 00:00:00
abstract：:The aim of the study was to compare subjective complaints of epilepsy patients with objective results of neuropsychological assessment and to investigate the possible influence of depression on self-reported complaints. 62 patients from the neurology clinic were included in the study. They were asked to fill the subje...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2009.02.006
更新日期：2009-04-01 00:00:00
abstract：PURPOSE:The aim of this study was to evaluate volumetric proton magnetic resonance spectroscopic imaging (MRSI) for localization of epileptogenic foci in neocortical epilepsy. METHODS:Twenty-five subjects reporting seizures considered to be of neocortical origin were recruited to take part in a 3-T MR study that inclu...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2009.10.009
更新日期：2010-02-01 00:00:00
abstract：:Dapsone (4,4'-diaminodiphenyl sulfone; DDS), an established anti-leprosy drug, showed anticonvulsive effects in the amygdaloid kindling model of epilepsy. Single doses of the drug in rats (6.25-12.5 mg/kg, i.p.) suppressed the kindled seizures in a dose-dependent manner without overt behavioral toxicity. With repeated...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/0920-1211(91)90001-v
更新日期：1991-11-01 00:00:00
abstract：OBJECTIVES:Cryosurgery is an alternative technique for minimally invasive treatment of lesions. We have recently examined cryosurgery for epilepsy in animal models, and found that penicillin G (PG)-induced epileptiform discharges (EDs) mostly vanished after freezing. However, EDs were provoked again after insufficient ...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2018.03.021
更新日期：2018-07-01 00:00:00
abstract：PURPOSE:Hippocampal sclerosis (HS) is the most common pathology in mesial temporal lobe epilepsy (MTLE). There are a few reports concerning prognosis in patients with MTLE-HS treated medically. The study was carried out to determine the clinical risk factors affecting prognosis. METHODS:We enrolled 287 patients with M...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2009.03.001
更新日期：2009-08-01 00:00:00
