Wyniki wyszukiwania dla: Gerhard H. Visser

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Transcranial magnetic stimulation‐evoked electroencephalography responses as biomarkers for epilepsy: A review of study design and outcomes

Silvano R. Gefferie, Diego Jiménez‐Jiménez, Gerhard H. Visser, Robert M. Helling, więcej

Human Brain Mapping > 44 > 8 > 3446 - 3460

Transcranial magnetic stimulation (TMS) with electroencephalography (EEG), that is TMS‐EEG, may assist in managing epilepsy. We systematically reviewed the quality of reporting and findings in TMS‐EEG studies on people with epilepsy and healthy controls, and on healthy individuals taking anti‐seizure medication. We searched the Cochrane Library, Embase, PubMed and Web of Science databases for original...

artykuł

Changes in motor nerve excitability in acute phase Guillain‐Barré syndrome

Judith Drenthen, Badrul Islam, Zhahirul Islam, Quazi D. Mohammad, więcej

Muscle & Nerve > 63 > 4 > 546 - 552

Background The most common subtypes of Guillain‐Barré syndrome (GBS) are acute inflammatory demyelinating polyneuropathy (AIDP) and acute motor axonal neuropathy (AMAN). In the first days after the onset of weakness, standard nerve conduction studies (NCS) may not distinguish GBS subtypes. Reduced nerve excitability may be an early symptom of nerve dysfunction, which can be determined with the compound...

artykuł

Automated video‐based detection of nocturnal convulsive seizures in a residential care setting

Evelien E. Geertsema, Roland D. Thijs, Therese Gutter, Ben Vledder, więcej

Epilepsia > 59 > S1 > 53 - 60

People with epilepsy need assistance and are at risk of sudden death when having convulsive seizures (CS). Automated real‐time seizure detection systems can help alert caregivers, but wearable sensors are not always tolerated. We determined algorithm settings and investigated detection performance of a video algorithm to detect CS in a residential care setting. The algorithm calculates power in the...

artykuł

What is a practical duration time for capturing psychogenic non-epileptic seizures by video-EEG monitoring?

Fieke M.E. Cox, Gerhard H. Visser

Seizure > 2018 > 56 > C > 110

artykuł

Standardized computer-based organized reporting of EEG: SCORE – Second version

Sándor Beniczky, Harald Aurlien, Jan C. Brøgger, Lawrence J. Hirsch, więcej

Clinical Neurophysiology > 2017 > 128 > 11 > 2334-2346

Standardized terminology for computer-based assessment and reporting of EEG has been previously developed in Europe. The International Federation of Clinical Neurophysiology established a taskforce in 2013 to develop this further, and to reach international consensus. This work resulted in the second, revised version of SCORE (Standardized Computer-based Organized Reporting of EEG), which is presented...

artykuł

Non-harmonicity in high-frequency components of the intra-operative corticogram to delineate epileptogenic tissue during surgery

Evelien E. Geertsema, Maryse A. van ’t Klooster, Nicole E.C. van Klink, Frans S.S. Leijten, więcej

Clinical Neurophysiology > 2017 > 128 > 1 > 153-164

We aimed to test the potential of auto-regressive model residual modulation (ARRm), an artefact-insensitive method based on non-harmonicity of the high-frequency signal, to identify epileptogenic tissue during surgery.Intra-operative electrocorticography (ECoG) of 54 patients with refractory focal epilepsy were recorded pre- and post-resection at 2048Hz. The ARRm was calculated in one-minute epochs...

artykuł

Timing of first event in inpatient long-term video-EEG monitoring for diagnostic purposes

Fieke M.E. Cox, Elise E.M. Reus, Gerhard H. Visser

Epilepsy Research > 2017 > 129 > C > 91-94

Long-term video-EEG monitoring (LTM) aims to record the habitual event and is a useful diagnostic tool for neurological paroxysmal clinical events. In our epilepsy monitoring unit (EMU) setting, admissions are usually planned to last up to five days. We ascertained time taken for the recording of a first event and determined correlations between different clinical characteristics and timings.We retrospectively...

artykuł

Value of video monitoring for nocturnal seizure detection in a residential setting

Marije Lende, Fieke M. E. Cox, Gerhard H. Visser, Josemir W. Sander, więcej

Epilepsia > 57 > 11 > 1748 - 1753

Objective Following a sudden death at a residential care unit, the Dutch Health and Care Inspectorate advised intensification of the use of video monitoring (VM) at the unit. We assessed whether VM resulted in increased identification of seizures that required clinical intervention. Methods The unit provides care for 340 individuals with refractory epilepsy and severe learning disabilities. Acoustic...

artykuł

Electrically evoked multiplet discharges are associated with more marked clinical deterioration in motor neuron disease

Boudewijn T.H.M. Sleutjes, Ellen M. Maathuis, Pieter A. van Doorn, Joleen H. Blok, więcej

Muscle & Nerve > 53 > 2 > 222 - 226

Introduction: The aim of this study was to determine whether electrically evoked multiplet discharges (MDs) are related to severity of clinical deterioration in motor neuron disease (MND). Methods: Stimulated high‐density surface electromyographic (HDsEMG) recordings were performed in thenar muscles. Data were collected from 31 MND patients. MDs from the HDsEMG recordings were determined at baseline...

artykuł

Identifying fasciculation potentials in motor neuron disease: A matter of probability

Boudewijn T.H.M. Sleutjes, Ivan Gligorijević, Inger Montfoort, Pieter A. van Doorn, więcej

Muscle & Nerve > 53 > 2 > 227 - 233

Introduction: Fasciculations, the spontaneous activity of single motor units (MUs) are characteristic, but nonspecific for motor neuron disease (MND). We aimed to identify MU discharge properties to optimally differentiate MND patients from healthy controls. Methods: High‐density surface electromyography recordings were performed in the thenar muscles during 10 min of rest. MU discharges were classified...

artykuł

Increased supernormality in patients with multiplet discharges: Evidence for a common pathophysiological mechanism behind multiplets and fasciculations

Boudewijn T.H.M. Sleutjes, Inger Montfoort, Pieter A. van Doorn, Gerhard H. Visser, więcej

Clinical Neurophysiology > 2015 > 126 > 7 > 1440-1445

To determine whether there is a relation between electrically evoked multiplet discharges (MDs) and motor axonal excitability properties. We hypothesized that electrically evoked MDs share their underlying pathophysiological mechanism with fasciculations.High-density surface EMG and motor nerve excitability recordings of the thenar muscles were performed in 22 patients with motor neuron disease (MND)...

artykuł

Electromyographically recorded patellar reflex in normotensive pregnant women and patients with preeclampsia

Ingrid A. Brussé, Gerhard H. Visser, Imke C. Marel, Sharon Facey‐Vermeiden, więcej

Acta Obstetricia et Gynecologica Scandinavica > 94 > 4 > 376 - 382

ObjectiveTo define reference values of the patellar reflex in normotensive pregnant and postpartum women and to compare these with values in women with preeclampsia. DesignObservational study. SettingUniversity teaching hospital in the Netherlands. PopulationNormotensive non‐pregnant women, pregnant women and preeclamptic women. MethodsIn normotensive pregnant women the patellar reflex was cross‐sectionally...

artykuł

Cerebral perfusion pressure in women with preeclampsia is elevated even after treatment of elevated blood pressure

Milan J. Sonneveld, Ingrid A. Brussé, Johannes J. Duvekot, Eric A.P. Steegers, więcej

Acta Obstetricia et Gynecologica Scandinavica > 93 > 5 > 508 - 511

Cerebral perfusion pressure (CPP) is elevated in preeclampsia, and may predispose to cerebrovascular complications and progression to eclampsia. We estimated zero flow pressure (ZFP) and CPP using simultaneously obtained arterial blood pressure and middle cerebral artery blood flow velocity in 10 women with preeclampsia, all treated with methyldopa with or without nifedipine, and 18 healthy pregnant...

artykuł

Relationship of EEG sources of neonatal seizures to acute perinatal brain lesions seen on MRI: A pilot study

Ivana Despotovic, Perumpillichira J. Cherian, Maarten Vos, Hans Hallez, więcej

Human Brain Mapping > 34 > 10 > 2402 - 2417

Even though it is known that neonatal seizures are associated with acute brain lesions, the relationship of electroencephalographic (EEG) seizures to acute perinatal brain lesions visible on magnetic resonance imaging (MRI) has not been objectively studied. EEG source localization is successfully used for this purpose in adults, but it has not been sufficiently explored in neonates. Therefore, we...

artykuł

Limb motor nerve dysfunction in Miller Fisher syndrome

Judith Drenthen, Ellen M. Maathuis, Gerhard H. Visser, Pieter A. van Doorn, więcej

Journal of the Peripheral Nervous System > 18 > 1 > 25 - 29

Typical Miller Fisher syndrome (MFS) lacks limb muscle weakness, but some patients may unpredictably progress to severe Guillain‐Barré syndrome. The compound muscle action potential (CMAP) scan is a recently developed non‐invasive, painless, and reproducible method for detecting early changes in motor nerve excitability. This technique was used to monitor subclinical limb motor nerve dysfunction during...

rozdział

Automated EEG inter-burst interval detection in neonates with mild to moderate postasphyxial encephalopathy

Vladimir Matic, Perumpillichira J. Cherian, Katrien Jansen, Ninah Koolen, więcej

2012 Annual International Conference of the IEEE Engineering in Medicine and Biology Society > 17 - 20

2012 34th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)

EEG inter-burst interval (IBI) and its evolution is a robust parameter for grading hypoxic encephalopathy and prognostication in newborns with perinatal asphyxia. We present a reliable algorithm for the automatic detection of IBIs. This automated approach is based on adaptive segmentation of EEG, classification of segments and use of temporal profiles to describe the global distribution of EEG activity...

artykuł

Somatosensory evoked potentials are of additional prognostic value in certain patterns of brain injury in term birth asphyxia

Renate M.C. Swarte, Perumpillichira J. Cherian, Maarten Lequin, Gerhard H. Visser, więcej

Clinical Neurophysiology > 2012 > 123 > 8 > 1631-1638

(a) To relate MRI patterns of brain injury to somatosensory evoked potentials (SEPs), and (b) to determine the prognostic value of SEPs in addition to continuous EEG monitoring (cEEG) and cerebral imaging, in term asphyxiated newborns.Fifty one consecutive neonates were studied. Survivors were followed for at least 2years. cEEG, started within 24h, was done for ⩾24h and scored. SEPs and MRIs were...

artykuł

Cone-rod dystrophy can be a manifestation of Danon disease

Alberta A. H. J. Thiadens, Niki W. R. Slingerland, Ralph J. Florijn, Gerhard H. Visser, więcej

Graefe's Archive for Clinical and Experimental Ophthalmology > 2012 > 250 > 5 > 769-774

Background Danon disease is a neuromuscular disorder with variable expression in the eye. We describe a family with Danon disease and cone-rod dystrophy (CRD). Methods Affected males of one family with Danon were invited for an extensive ophthalmologic examination, including color vision testing, fundus photography, Goldmann perimetry, full-field electroretinogram (ERG), and SD-OCT. Previous ophthalmologic...

artykuł

P44. The effect of hypertensive disorders in pregnancy on quality of life post partum

Ingrid A. Brussé, Ivette Meester, Eric A.P. Steegers, A.J. Gerard Jansen, więcej

Pregnancy Hypertension: An International Journal of Women's Cardiovascular... > 2011 > 1 > 3-4 > 293-294

artykuł

Reproducibility of the CMAP scan

Ellen M. Maathuis, Judith Drenthen, Gerhard H. Visser, Joleen H. Blok

Journal of Electromyography and Kinesiology > 2011 > 21 > 3 > 433-437

The CMAP scan is a surface EMG method based on the successive activation of motor units. It provides information about reinnervation processes, the number of functional motor units and nerve excitability. The CMAP scan has potential value as a follow-up tool in monitoring disease progression, recovery or aging of the peripheral nerves. In this study, we assessed its interobserver and different-day...

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