Results 201 to 210 of about 4,530 (250)

Hypsarrhythmia: Variations on the Theme

Epilepsia, 1984
Summary: Prolonged monitoring studies of patients with infantile spasms have shown that hypsarrhythmia is a highly variable and dynamic electroencephalographic pattern. Variations of the prototypic pattern (modified hypsarrhythmia) include hypsarrhythmia with increased in‐terhemispheric synchronization, asymmetrical hypsarrhythmia, hypsarrhythmia with
Peter Kellaway, Richard A. Hrachovy, James D. Frost   +2 more
openaire   +2 more sources

Is the EEG really "chaotic" in hypsarrhythmia

IEEE Engineering in Medicine and Biology Magazine, 2001
The authors conclude that the hypsarrhythmic EEG shares less features with EEGs with generalized seizure activity than suggested by the often used adjective "chaotic" in the description of the visually inspected time series. Although the hypsarrhythmic EEG may occasionally contain some weak nonlinear structures, as in the control EEGs, the authors ...
van Putten, M J, Stam, C J
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Hypsarrhythmia and infantile autism: A clinical report

Journal of Autism and Childhood Schizophrenia, 1971
The case histories of five children, four boys and one girl (1 to 9 years of age), who developed autistic behavior after the onset of infantile spasms, are presented in detail. The patients' initial EEGs disclosed hypsarrhythmia. First onsets of seizures occurred during the second 6 months of life in four and on the third day of life in the youngest ...
Lawrence T. Taft, Herbert J. Cohen
openaire   +3 more sources

Three Patients of the Early Onset Epileptic Spasms without Hypsarrhythmia

Neuropediatrics
Epileptic spasms without hypsarrhythmia occur when patients do not display hypsarrhythmia on electroencephalogram (EEG) at the onset and throughout the clinical course.
Ikko Ohshiro, Tohru Okanishi, Ryo Ohta, Kento Ohta, Yuto Arai, Sotaro Kanai, A. Fujimoto, Yoshihiro Maegaki   +7 more
semanticscholar   +1 more source

Auto-Detection of Hypsarrhythmia EEG in West Syndrome by Dedicated Feature Fusion and Machine Learning

IEEE Sensors Journal
West syndrome (WS) is a neurodevelopmental disorder causing retardation in many patients. Hypsarrhythmia electroencephalography (EEG) and motor spasms are considered as clinical manifestations of WS.
Yumei Yan, Qinman Wu, Wenyuan He, Qiongru Guo, Ruolin Hou, Ruisheng Su, Tao Tan, Xiaoqiang Wang, Yuanning Li, Dake He, Lin Xu   +10 more
semanticscholar   +1 more source

Successful zonisamide treatment for infants with hypsarrhythmia

Pediatric Neurology, 2000
We determined that zonisamide was effective in three epileptic infants with hypsarrhythmia. Two patients had the electroencephalographic pattern of hypsarrhythmia associated with developmental delay but lacked the characteristic tonic spasms. A third patient exhibited the typical triad of infantile spasms but had a poor general condition requiring ...
Yoshihisa Nejihashi, Kazuhiro Ueda, Michi Kajiyama, Takamasa Kishi   +3 more
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Asymmetric Hypsarrhythmia and Infantile Spasms in West Syndrome

Journal of Child Neurology, 1994
The video encephalograms (EEGS) of 77 consecutive infantile spasms patients were evaluated for the presence of focal or asymmetric hypsarrhythmia and infantile spasms, to determine whether these findings were useful in predicting the presence of focal structural brain disease and were of any additional diagnostic or prognostic significance.
Jane F. Donat, Warren D. Lo
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Epileptic spasms in clusters without hypsarrhythmia in infancy

Epileptic Disorders, 2003
Spasms are defined as epileptic seizures characterized by brief axial contraction, in flexion, extension or mixed, symmetric or asymmetric, lasting from a fraction of a second to 1‐2s, and are associated with a slow‐wave transient or sharp and slow‐wave complex, followed or not by voltage attenuation. Epileptic spasms usually appear in clusters and are
CARABALLO R. H., FEJERMAN N., DALLA BERNARDINA, Bernardo, RUGGIERI V., CERSÓSIMO R., MEDINA C., POCIECHA J.   +6 more
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Current data on early diagnosis of West syndrome. Electroencephalographic evolution of hypsarrhythmia

, 2020
The review of current ideas about the early diagnosis of West syndrome is presented in terms of electroencephalography data based on a characterization of the period of «prehypsarrhythmia» preceding the appearance of the pattern of hypsarrhythmia.
V. A. Aysina, Айсина Виктория Александровна, L. Kuzenkova, Л М Кузенкова, O. Kozhevnikova, О. В. Кожевникова   +5 more
semanticscholar   +1 more source

Magnetoencephalographic analysis of hypsarrhythmia in West Syndrome

Journal of Epilepsy, 1997
Abstract Magnetoencephalography (MEG) was performed in 7 patients with West syndrome (WS). In patients who had localized lesions such as tuberous sclerosis and porencephaly in the cerebral cortex, MEG showed clusters of sources of epileptiform discharges (EDs) of hypsarrhythmia at these lesions.
Taketsugu Minami, Ryutaro Kira, Youichi Tokunaga, Kohji Ueda, Shinji Yanai, Kenjiro Gondo, Tomoya Yamamoto   +6 more
openaire   +2 more sources