Clinical and electroencephalographic findings in early and late onset benign childhood epilepsy with occipital paroxysms

Tsai, Meng‐Li; Lo, Hsin Yu; Chaou, Wun-Tsong

doi:10.1016/s0387-7604(01)00246-7

Cited by 24 publications

(24 citation statements)

References 16 publications

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“…Interictal paroxysmal discharges arising from the precentral gyrus and centered on rolandic or centro-temporo-parietal areas typify BECTS [8][9][10][11]. As far as PS is concerned, interictal spikes often predominate over the occipital lobes [12][13][14][15] but are also commonly observed in extra-occipital regions [13][14][15]. Thus, the International League Against Epilepsy (ILAE) recently abandoned the descriptive term occipital for PS [16].…”

Section: Introductionmentioning

confidence: 99%

Disengagement and inhibition of visual–spatial attention are differently impaired in children with rolandic epilepsy and Panayiotopoulos syndrome

Bedoin

Ciumas

Lopez

et al. 2012

Epilepsy & Behavior

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Section: Introductionmentioning

confidence: 99%

Disengagement and inhibition of visual–spatial attention are differently impaired in children with rolandic epilepsy and Panayiotopoulos syndrome

Bedoin

Ciumas

Lopez

et al. 2012

Epilepsy & Behavior

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“…Topographic analysis may help clinicians reach diagnostics [Harner 1986, Nuwer 1988, Babiloni et al 2004], because it easily pinpoints the exact location of EEG alterations. In particular, EEG topography has been used as a tool for investigating the activity of epileptic brains during the ictal stage for onset zone localization [Miyagi et al 2005, Ebersole 1997, Schreg 1994, Tekgul et al 2005, Nayak et al 2004, Skrandies and Dralle 2004, Clemens 2002, Tsaiet al 2001, Crone et al 2001]. Moreover, finding parameters with a topographic significance has been intensively addressed in scalp potential topography and EEG frequency analysis [Samson-Dollfus D. et al 1987, Harner R.N.…”

Section: Introductionmentioning

confidence: 99%

Visualization and modelling of STLmax topographic brain activity maps

Mammone

Prı́ncipe

Morabito

et al. 2010

Journal of Neuroscience Methods

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This paper evaluates the descriptive power of brain topography based on a dynamical parameter, the Short-Term Maximum Lyapunov Exponent (STLmax), estimated from EEG, for finding out a relationship of STLmax spatial distribution with the onset zone and with the mechanisms leading to epileptic seizures. Our preliminary work showed that visual assessment of STLmax topography exhibited a link with the location of seizure onset zone. The objective of the present work is to model the spatial distribution of STLmax in order to automatically extract these features from the maps. One-hour preictal segments from four long-term continuous EEG recordings (two scalp and two intracranial) were processed and the corresponding STLmax profiles were estimated. The spatial STLmax maps were modelled by a combination of two Gaussians functions. The parameters of the fitted model allow automatic extraction of quantitative information about the spatial distribution of STLmax: the EEG signal recorded from the brain region where seizures originate exhibited lowSTLmax levels, long before the seizure onset, in 3 out of 4 patients (1 out of 2 of scalp patients and 2 out of 2 in intracranial patients). Topographic maps extracted directly from the EEG power did not provide useful information about the location, therefore we conclude that the analysis so far carried out suggests the possibility of using a model of STLmax topography as a tool for monitoring the evolution of epileptic brain dynamics. In the future, a more elaborate approach will be investigated in order to improve the specificity of the method.

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“…Therefore, the requirement for strict delineation into either the early-onset or the late-onset forms of occipital lobe epilepsy could be discarded since a large proportion of patients present with mixed clinical phenomena at various ages, as has been shown in our data and that of others. 8,15,18 …”

Section: Discussionmentioning

confidence: 99%

Childhood Epilepsy With Occipital Paroxysms: Difficulties in Distinct Segregation Into Either the Early-Onset or Late-Onset Epilepsy Subtypes

et al. 2007

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The Commission on Classification and Terminology of the International League Against Epilepsy Childhood rigidly segregated epilepsy with occipital paroxysms into 2 separate syndromes with different predominant seizure types: early-onset seizure susceptibility type consisting of prolonged infrequent, nocturnal autonomic seizures and accompanied by eye deviation and ictal vomiting and late onset with short diurnal frequent seizures and visual ictal manifestations along with throbbing headaches. Epileptic clinical manifestations and electroencephalographic data were analyzed in 28 patients with suspected occipital lobe epilepsy in an attempt to segregate them into either the early or late forms according to the International League Against Epilepsy classification. Electroencephalography in 25 children demonstrated occipital epileptiform paroxysms compatible with the suspected epileptic syndrome. Only 14 (50%) children complied with the rigid criteria of either early-onset or late-onset presentations. The other 14 (50%) children presented with mixed diverse epileptic phenomena such as short-lived seizures in infancy or prolonged seizures during childhood, not complying with either rigid syndrome (ie, short-lived epileptic blindness at an early age or vomiting during later childhood). Despite present attempts to rigidly segregate childhood epilepsy with occipital paroxysms into 2 distinct epileptic syndromes, a high percentage of children still present with various mixed clinical phenomena. Therefore, clinicians should be aware of possible unique and unusual presentations of occipital lobe epilepsy at various ages.

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Clinical and electroencephalographic findings in early and late onset benign childhood epilepsy with occipital paroxysms

Cited by 24 publications

References 16 publications

Disengagement and inhibition of visual–spatial attention are differently impaired in children with rolandic epilepsy and Panayiotopoulos syndrome

Disengagement and inhibition of visual–spatial attention are differently impaired in children with rolandic epilepsy and Panayiotopoulos syndrome

Visualization and modelling of STLmax topographic brain activity maps

Childhood Epilepsy With Occipital Paroxysms: Difficulties in Distinct Segregation Into Either the Early-Onset or Late-Onset Epilepsy Subtypes

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