14 and 6 Hz positive spikes preceding 3 Hz generalized spike and wave in a 15 year old patient with absence: a case report.
A 15 year old girl with a history of childhood absence seizures underwent a prolonged EEG recording. Twelve bursts of 3 Hz generalized spike and wave were recorded during drowsiness and light sleep, all of which were preceded by 14 and 6 Hz positive spikes with a latency of under 1 s. Nine bursts of polyspike-wave, not preceded by 14 and 6 Hz positive spikes, were recorded during deeper sleep (stage 3). The bursts of polyspike-wave were significantly longer when preceded by 14 and 6 Hz spikes than when observed in isolation. The close association between these paroxysmal events in our patient is intriguing, may be coincidental, and has never before been reported.
Oletsky
H
H
EEG Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892, USA.
Greenfield
J
J
Sato
S
S
D000293:Adolescent; D004569:Electroencephalography; D004832:Epilepsy, Absence / Q000503:physiopathology*; D005260:Female; D006801:Humans; D012894:Sleep Stages