Search results for: I. Fekete

Items from 1 to 20 out of 21 results

article

Valproate treatment normalizes EEG functional connectivity in successfully treated idiopathic generalized epilepsy patients

B. Clemens, S. Puskás, M. Besenyei, N.Zs. Kovács, more

Epilepsy Research > 2014 > 108 > 10 > 1896-1903

To investigate the effect of chronic VPA treatment of EEG functional connectivity in successfully treated idiopathic generalized epilepsy (IGE) patients.19-channel waking, resting-state EEG records of 26 IGE patients were analyzed before treatment (IGE) and after the 90th day of treatment (VPA), in seizure-free condition. Three minutes of artifact-free EEG background activity (without epileptiform...

article

P958: Uncommon axonal neuropathies at the intensive care unit (ICU)

K. Fekete, F. Mechler, I. Fekete

Clinical Neurophysiology > 2014 > 125 > Supplement 1 > S302-S303

article

Neurophysiology of juvenile myoclonic epilepsy: EEG-based network and graph analysis of the interictal and immediate preictal states

B. Clemens, S. Puskás, M. Besenyei, T. Spisák, more

Epilepsy Research > 2013 > 106 > 3 > 357-369

The neuronal mechanisms of enduring seizure propensity and seizure precipitation in juvenile myoclonic epilepsy (JME) are not known. We investigated these issues, within the framework of the “network concept” of epilepsy.Design1: 19, unmedicated JME patients were compared with nineteen, age-, and sex-matched normal control persons (NC). A total of 120s, artifact-free, paroxysm-free, eyes-closed, resting...

article

Remission of benign epilepsy with rolandic spikes: An EEG-based connectivity study at the onset of the disease and at remission

B. Clemens, S. Puskás, M. Besenyei, T. Spisák, more

Epilepsy Research > 2013 > 106 > 1-2 > 128-135

The neuronal mechanisms of remission of epilepsy are not known. Based on the principles of the “network theory of epilepsy” we postulated the existence of abnormal cortico-cortical interactions at the onset of epilepsy (Hypothesis-1), and postulated that remission is associated with the decrease or disappearance of the abnormal quantitative EEG findings (Hypothesis-2).Four children with benign epilepsy...

chapter

A stability approach for reaction-diffusion problems

I Fekete, I Farago

2013 IEEE 8th International Symposium on Applied Computational Intelligence and Informatics (SACI) > 191 - 195

2013 IEEE 8th International Symposium on Applied Computational Intelligence and Informatics (SACI)

In this paper we investigate the N-stability notion in an abstract Banach space setting. The main result is that we verify the N-stability of the implicit difference method for the periodic initial-value reaction-diffusion problem.

article

EEG-LORETA endophenotypes of the common idiopathic generalized epilepsy syndromes

B. Clemens, S. Puskás, M. Besenyei, M. Emri, more

Epilepsy Research > 2012 > 99 > 3 > 281-292

We tested the hypothesis that the cortical areas with abnormal local EEG synchronization are dissimilar in the three common idiopathic generalized epilepsy (IGE) phenotypes: IGE patients with absence seizures (ABS), juvenile myoclonic epilepsy (JME) and epilepsy with generalized tonic–clonic seizures exclusively (EGTCS).Groups of unmedicated ABS, JME and EGTCS patients were investigated. Waking EEG...

article

EEG background activity is abnormal in the temporal and inferior parietal cortex in benign rolandic epilepsy of childhood: A LORETA study

M. Besenyei, E. Varga, I. Fekete, S. Puskás, more

Epilepsy Research > 2012 > 98 > 1 > 44-49

Benign rolandic epilepsy of childhood (BERS) is an epilepsy syndrome with presumably genetic-developmental etiology. The pathological basis of this syndrome is completely unknown. We postulated that a developmental abnormality presumably results in abnormal EEG background activity findings.20 children with typical BERS and an age- and sex-matched group of healthy control children underwent EEG recording...

article

EEG functional connectivity of the intrahemispheric cortico-cortical network of idiopathic generalized epilepsy

B. Clemens, S. Puskás, M. Bessenyei, M. Emri, more

Epilepsy Research > 2011 > 96 > 1-2 > 11-23

Intrahemispheric, cortico-cortical EEG functional connectivity (fC) was investigated in untreated patients with idiopathic generalized epilepsy (IGE) in this explorative study.Group comparison was carried out between 19, drug-naive IGE patients and 19, matched healthy persons. 90ÿ2s of 19 channels waking, interictal background EEG signal (without epileptiform potentials) were processed to the LORETA...

article

Various fractionation procedures in study of heavy metals mobility in the environment

G. Heltai, D. Remeteiova, M. Horvath, E. Szeles, more

Ecological Chemistry and Engineering. S > 2011 > Vol. 18, nr 1 > 55-65

The applicability and information content of two sequential extraction procedures for fractionation of element content of sediments, soils and gravitation dusts are compared. To this comparative study three typical samples were used: a Hungarian soil sample from the control plot of a heavy metal contamination field experiment, a contaminated lake sediment from Gödöllő, HU and an averaged airborne...

article

Quantitative EEG abnormalities in persons with “pure” epileptic predisposition without epilepsy: A low resolution electromagnetic tomography (LORETA) study

S. Puskás, M. Bessenyei, I. Fekete, K. Hollódy, more

Epilepsy Research > 2010 > 91 > 1 > 94-100

Epileptic predisposition means genetically determined, increased seizure susceptibility. Neurophysiological evaluation of this condition is still lacking. In order to investigate “pure epileptic predisposition” (without epilepsy) in this pilot study the authors prospectively recruited ten persons who displayed generalized tonic–clonic seizures precipitated by 24 or more hours of sleep deprivation...

article

Theta EEG source localization using LORETA in partial epilepsy patients with and without medication

B. Clemens, M. Bessenyei, I. Fekete, S. Puskás, more

Clinical Neurophysiology > 2010 > 121 > 6 > 848-858

To investigate and localize the sources of spontaneous, scalp-recorded theta activity in patients with partial epilepsy (PE).Nine patients with beginning, untreated PE (Group 1), 31 patients with already treated PE (Group 2), and 14 healthy persons were investigated by means of spectral analysis and LORETA, low resolution electromagnetic tomography (1Hz very narrow band analysis, age-adjusted, Z-scored...

article

Application of sequential extraction with supercritical CO₂, subcritical H₂O, and an H₂O/CO₂ mixture for estimation of environmentally mobile heavy metal fractions in sediments

G. Heltai, B. Fehér, K. Percsich, B. Barabás, more

Analytical and Bioanalytical Chemistry > 2002 > 373 > 8 > 863-866

. Results from use of a new isolation procedure based on sequential extraction with supercritical CO₂, subcritical H₂O, and an H₂O/CO₂ mixture in the same supercritical fluid extractor have been compared with results from the BCR-recommended three-step sequential extraction procedure. The new procedure gives more detailed information about environmentally mobile fractions (water-soluble, bicarbonate-forming),...

article

Speciation of waste water sediments

Gy. Heltai, K. Percsich, I. Fekete, B. Barabás, more

Microchemical Journal > 2000 > 67 > 1-3 > 43-51

A sequential extraction procedure for waste water sediments was elaborated based on CO ₂ and water extractants using supercritical fluid extraction instrumentation. The procedure gives information on water-soluble, carbonate-bound and mobile organic-bound trace metal fractions. The chemical interpretation of this procedure is comparable with the BCR recommended three-stage sequential extraction...

article

A systematic review of vinpocetine therapy in acute ischaemic stroke

D. Bereczki, I. Fekete

European Journal of Clinical Pharmacology > 1999 > 55 > 5 > 349-352

AbstractObjectives: To determine whether vinpocetine decreases short- and long-term case fatality and proportion of dependent survivors if administered within 2weeks of stroke onset. Methods: All published and unpublished trials were attempted to be identified using the standard search strategy of the Cochrane Collaboration Stroke Review Group, using MEDLINE searches performed with all known manufacturer...

article

Application of MIP-AES as element specific detector for speciation analysis

G. Heltai, T. Jzsa, K. Percsich, I. Fekete, more

Analytical and Bioanalytical Chemistry > 1999 > 363 > 5/6 > 487-490

Abstract An MIP-AES element specific detector has been directly coupled to an HPLC separation system by means of hydraulic high-pressure nebulization (HHPN) with an appropriate desolvation unit. This system was applied to Cr(III)/Cr(VI) speciation analysis. The linear dynamic range of Cr(III) and Cr(VI) determination was two orders of magnitude, absolute detection limits were 13 ng for Cr(III) and...

article

Free radical reactions in erythrocytes of stroke patients

S. G. Imre, Z. Szikszai, I. Fekete

Pathophysiology > 1998 > 5 > 1001 > 84

Investigations were carried out to elucidate the biochemical background of reduced deformability of erythrocytes in 40 acute ischemic stroke patients and in 20 healthy subjects. Deformability was characterized by determining the relativ cell transit time (RCTT) and initial filtration rate (IFR) of erythrocytes with St. George filtrometer. Malondialdehyde (MDA) content of erythrocytes was measured...

article

Environmental Evaluation of a Local Lake Chain Affected by Wastewater by Means of Spectrochemical Analytical Methods

Gy Heltai, I. Fekete, Z. Gémesi, K. Percsich, more

Microchemical Journal > 1998 > 59 > 1 > 125-135

Analytical strategy for clarification of an environmental pollution problem is presented in a case study. An artificial lake chain created by a rivulet running through the town of Gödöllő was investigated. Today it is supplied by cleaned wastewater from Gödöllő as well. The sediment was used as a cumulative indicator of pollution. It was shown that the application of limit values and standardized...

article

1-07-20 The efficacy of combined pretreatment with memantine and nimotop for protection of ischemic brain injury in rabbits

I. Fekete, K. Hegedüs, L. Molnár

Journal of the Neurological Sciences > 1997 > 150 > Supplement 1 > S12

article

1-36-03 Acute stroke in Eastern Hungary: Hospital- and population based mortality and characteristics of the stroke unit

D. Bereczki, L. Mihálka, I. Fekete, L. Csiba

Journal of the Neurological Sciences > 1997 > 150 > Supplement 1 > S54-S55

article

2-07-47 Examination of hemorheological parameters in comparison with blood flow velocity of the middle cerebral artery in stroke patients

I. Fekete, A. Valikovics, D. Bereczki, T. Magyar, more

Journal of the Neurological Sciences > 1997 > 150 > Supplement 1 > S85

Publication date

Set your own date range

INFONA - science communication portal

Search results for: I. Fekete

Valproate treatment normalizes EEG functional connectivity in successfully treated idiopathic generalized epilepsy patients

P958: Uncommon axonal neuropathies at the intensive care unit (ICU)

Neurophysiology of juvenile myoclonic epilepsy: EEG-based network and graph analysis of the interictal and immediate preictal states

Remission of benign epilepsy with rolandic spikes: An EEG-based connectivity study at the onset of the disease and at remission

A stability approach for reaction-diffusion problems

EEG-LORETA endophenotypes of the common idiopathic generalized epilepsy syndromes

EEG background activity is abnormal in the temporal and inferior parietal cortex in benign rolandic epilepsy of childhood: A LORETA study

EEG functional connectivity of the intrahemispheric cortico-cortical network of idiopathic generalized epilepsy

Various fractionation procedures in study of heavy metals mobility in the environment

Quantitative EEG abnormalities in persons with “pure” epileptic predisposition without epilepsy: A low resolution electromagnetic tomography (LORETA) study

Theta EEG source localization using LORETA in partial epilepsy patients with and without medication

Application of sequential extraction with supercritical CO₂, subcritical H₂O, and an H₂O/CO₂ mixture for estimation of environmentally mobile heavy metal fractions in sediments

Speciation of waste water sediments

A systematic review of vinpocetine therapy in acute ischaemic stroke

Application of MIP-AES as element specific detector for speciation analysis

Free radical reactions in erythrocytes of stroke patients

Environmental Evaluation of a Local Lake Chain Affected by Wastewater by Means of Spectrochemical Analytical Methods

1-07-20 The efficacy of combined pretreatment with memantine and nimotop for protection of ischemic brain injury in rabbits

1-36-03 Acute stroke in Eastern Hungary: Hospital- and population based mortality and characteristics of the stroke unit

2-07-47 Examination of hemorheological parameters in comparison with blood flow velocity of the middle cerebral artery in stroke patients

Filter options

Publication date

Content availability

Publication type

Keywords

Data set

Journal

INFONA - science communication portal

Search results for: I. Fekete

Add recipient

Sending message cancelled

Are you sure you want to cancel sending this message?

Send message

Filter options

Publication date

Date range setting

Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.

Content availability

Publication type

Keywords

Data set

Journal

Reporting an error / abuse

Sending the report failed

Accessibility options