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Volume 14 (1996)
- Issue 3 Pages 181-
- Issue 2 Pages 109-
- Issue 1 Pages 1-
Volume 14, Issue 1
Displaying 1-4 of 4 articles from this issue
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Naohiro Nishibayashi1996 Volume 14 Issue 1 Pages 1-11
Published: February 29, 1996
Released on J-STAGE: July 17, 2012
JOURNAL FREE ACCESSIn an attempt to clarify the clinico-electroencephalographical characteristics of the epilepsy with continuous spike-waves during slow wave sleep (ECSWS). I inves tigated the 29 patients whose spike-wave index (SWI) during sleep exceeded 25%, and the patients were classified into the following 3 groups; Group I (SWI: 85%) Group II (SWI: 50-84%), and Group III (SWI: 25-49%).
The results are as follows:
1) The age of onset and disappearance of continuous spike-waves during slow wave sleep (CSWS) ranged from 3 to 15 years old, but no significant difference among the 3 groups was noticed. The average duration of CSWS was found significantly shorter in Group II and III than Group I.
2) The epileptic seizures observed in complication with ECSWS became disappeared by the age of 15 years old, and there was no case leading to an adult intractable epilepsy.
3) Permanent mental defect was observed for the patients whose SWI exceeded 50%, particularly all the patients of the Group I revealed mental deterioration. Mental deterioration was also observed for all the patients whose CSWS continued for more than 2 years.
4) In the International Classification of Epilepsy, ECSWS is classified as undeter mined epilepsy. However, we pointed out that ECSWS shares many of the factors with localization-related epilepsy.View full abstractDownload PDF (1449K) -
Jun Kawasaki, Kousuke Kanemoto, Satoru Nishikawa, Yoshihiro Nakagawa, ...1996 Volume 14 Issue 1 Pages 12-18
Published: February 29, 1996
Released on J-STAGE: July 17, 2012
JOURNAL FREE ACCESSIn order to asess the accuracy and reliability of ictal EEG, 38 scalp EEG from 10 patients were analyzed by three electroenchephalographers. All patients had been seizure-free for more than one year after temporal lobectomy. Rhythmic discharge in CPS was more common, and its onset was more accurate and reliable than its amplitude asymmetry to determine the lateralization of seizure origin. When all seizures were analyzed, we determined side of seizure onset correctly in 56% to 80% of seizures. When analysis was confined to those seizures in which lateralization was possible, we correctly lateralized all seizures. Postictal slowing was less common and provided little imformation to lateralization judgement.View full abstractDownload PDF (924K) -
Osamu Kanazawa, Hiroshi Nagafuji1996 Volume 14 Issue 1 Pages 19-24
Published: February 29, 1996
Released on J-STAGE: July 17, 2012
JOURNAL FREE ACCESSA peculiar behavior of a nine-year-old girl during sleep was captured by video EEG simultaneous recording system and investigated. It was proved that she was having epileptic seizures with frontal lobe origin. Her seizures began about one hour after falling asleep and occurred frequently during all night sleep. The seizure manifestations seemed to be tight eye closure, elevation of bilateral arms and rhythmi cal whole body shaking. She had no mental deficiency nor other neurological problems. Her brain CT, MRI and SPECT scans were entirely normal. Interictal EEG showed several low amplitude sharp activities predominating on the right frontal central area. Seventeen complete epileptic seizures were captured in a full-night EEG recording. And a part of ictal records revealed right frontal origin. Seizure control by antiepile ptic drugs was quite ideal. Although there is no other epileptic relatives, this condition was regarded to be the partial idiopathic epileptic syndrome of frontal lobe origin proposed by Vigevano and Fusco in 1993. This must be the first report of the syndrome in Japan. There may be not a few patients looked over as having nonepileptic seizures.View full abstractDownload PDF (2961K) -
Mitsuharu Hidari, Akira Shimizu, Kyoko Hiroishi, Hirotaka Toyoda, Mits ...1996 Volume 14 Issue 1 Pages 25-30
Published: February 29, 1996
Released on J-STAGE: July 17, 2012
JOURNAL FREE ACCESSTwo patients with localization-related epilepsy showed reversed redistributions of 123I-IMP on SPECT examinations which were carried out within a few hours after seizures. Re-examinations in seizure free periods failed to yield the reversed redistribu tions in both patients. It is most probable that a postictal abnormality of the cortical tissue retains IMP at the epileptogenic focus and this IMP retention mechanism reveals the postictal abnormality as reversed redistribution on SPECT.
In either patient, the localization of reversed redistribution was congruent with the epileptogenic focus determined by EEG or MRI findings. It should be useful to carry out 123I-IMP SPECT within a few hours after the seizures to determine the localization of the epileptogenic focus.View full abstractDownload PDF (5053K)
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