PMID: 6539199Jun 1, 1984Paper

Hypsarrhythmia: variations on the theme

Epilepsia
R A HrachovyP Kellaway

Abstract

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 interhemispheric synchronization, asymmetrical hypsarrhythmia, hypsarrhythmia with a consistent focus of abnormal discharge, hypsarrhythmia with episodes of attenuation, and hypsarrhythmia comprising primarily high-voltage slow activity with little sharp-wave or spike activity. Marked changes in the hypsarrhythmic pattern usually occur during sleep, chiefly during rapid eye movement sleep, when there is a marked reduction in, or total disappearance of, the hypsarrhythmic pattern. Relative normalization of the hypsarrhythmic pattern can also be seen immediately on arousal and during clusters of infantile spasms. Thus, the specific EEG features seen in a given patient depend on multiple factors, including the duration of the EEG recording, the clinical state of the patient, and the presence of various structural abnormalities of the brain.

References

Sep 1, 1977·Archives of Neurology·R G FarielloJ S Prichard
Sep 1, 1979·Annals of Neurology·P KellawayT Zion
Dec 1, 1978·Developmental Medicine and Child Neurology·A T TjiamM de Vlieger
Oct 1, 1973·Developmental Medicine and Child Neurology·K WatanabeK Hara
Jun 1, 1981·Neurology·R A HrachovyP Kellaway
Nov 1, 1955·Epilepsia·R DRUCKMAN, D CHAO

❮ Previous
Next ❯

Citations

Dec 1, 1994·Italian Journal of Neurological Sciences·F VianiM Viri
May 1, 1990·Pediatric Neurology·O C Snead
Mar 1, 1991·Pediatric Neurology·M ItoH Mikawa
Nov 1, 1994·Pediatric Neurology·A V MenezesJ R Buncic
Jul 1, 1997·European Journal of Radiology·L SztrihaV Prais
Mar 29, 2001·Pediatric Neurology·M Wong, E Trevathan
Nov 19, 2002·Pediatric Neurology·Güzide Burça AydlnFatmanur Cakmak
Jun 23, 1999·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·F PanzicaG Avanzini
Jul 31, 2003·Epilepsia·Kette D ValenteMaria J Marques-Dias
Jun 13, 2002·Epilepsia·Douglas R Nordli
May 1, 1998·Journal of Clinical Neurophysiology : Official Publication of the American Electroencephalographic Society·E J Novotny
Jun 8, 1999·Journal of Clinical Neurophysiology : Official Publication of the American Electroencephalographic Society·E M Mizrahi
Jul 4, 2001·Journal of Clinical Neurophysiology : Official Publication of the American Electroencephalographic Society·M Méndez, R A Radtke
Jan 22, 2004·Journal of Clinical Neurophysiology : Official Publication of the American Electroencephalographic Society·Richard A Hrachovy, James D Frost
Aug 4, 2006·Journal of Clinical Neurophysiology : Official Publication of the American Electroencephalographic Society·Richard A Hrachovy, James D Frost
Mar 12, 2010·The Neurologist·Eric H Kossoff
Jul 1, 1993·Epilepsia·K WatanabeA Matsumoto
Jan 1, 1993·Epilepsia·E J CarrazanaG L Holmes
Jan 1, 1993·Epilepsia·O Dulac, T N'Guyen
May 13, 1998·Epilepsia·N BednarekO Dulac
Jan 30, 1999·Epilepsia·D H LowensteinR L Macdonald
Sep 11, 2007·Epilepsia·Ferruccio PanzicaSilvana Franceschetti
Jul 9, 2010·Epilepsia·John M PellockJames W Wheless
Feb 5, 2009·Pediatric Research·Miguel A CortezO Carter Snead
Jun 1, 1999·Journal of Neurosurgery·J E ArleW K Doyle
Feb 23, 2002·The Canadian Journal of Neurological Sciences. Le Journal Canadien Des Sciences Neurologiques·Warren T Blume
Dec 3, 2014·Journal of Clinical Neurophysiology : Official Publication of the American Electroencephalographic Society·Kenneth A MyersMorris H Scantlebury
Nov 10, 2001·Brain & Development·K WatanabeA Okumura
Nov 10, 2001·Brain & Development·Y OhtsukaE Oka

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.