Clinical EEG (electroencephalography)最新文献_第6页

Considerations of nonconvulsive status epilepticus. 非惊厥性癫痫持续状态的考虑。

Clinical EEG (electroencephalography) Pub Date : 2000-10-01 DOI: 10.1177/155005940003100407

E Niedermeyer, M Ribeiro

引用次数: 46

EEG hemispheric asymmetry as a predictor and correlate of short-term response to clozapine treatment in schizophrenia. 脑电半球不对称作为精神分裂症氯氮平治疗短期反应的预测因子和相关性。

Clinical EEG (electroencephalography) Pub Date : 2000-07-01 DOI: 10.1177/155005940003100308

V Knott, A Labelle, B Jones, C Mahoney

{"title":"EEG hemispheric asymmetry as a predictor and correlate of short-term response to clozapine treatment in schizophrenia.","authors":"V Knott, A Labelle, B Jones, C Mahoney","doi":"10.1177/155005940003100308","DOIUrl":"https://doi.org/10.1177/155005940003100308","url":null,"abstract":"In search of early neuroleptic response predictors in schizophrenia, functional interhemispheric and intrahemispheric asymmetry indices, derived from spectrally analyzed resting electroencephalographic (EEG) activity, were examined in 17 schizophrenic patients prior to open label treatment with the atypical neuroleptic clozapine. Compared to EEG asymmetry indices derived from a normative data bank, patients exhibited significant interhemispheric (left greater than right) and intrahemispheric (anterior greater than posterior) deviations in delta, theta, alpha and beta frequency bands. Intrahemispheric indices were positively correlated with clinical ratings of positive symptoms and global psychopathology. Clozapine-induced improvements in positive and negative symptoms and global psychopathology symptom ratings were related to pretreatment intrahemispheric asymmetry only, with relationships varying with symptom, recording region and frequency band. The results are discussed in relation to the neurobiology of schizophrenia and the utility of EEG as an informative predictor of treatment response.","PeriodicalId":75713,"journal":{"name":"Clinical EEG (electroencephalography)","volume":"31 3","pages":"145-52"},"PeriodicalIF":0.0,"publicationDate":"2000-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/155005940003100308","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21763147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 23

Absence seizures and the frontal lobe. 失神癫痫和额叶。

Clinical EEG (electroencephalography) Pub Date : 2000-07-01 DOI: 10.1177/155005940003100309

A Pavone, E Niedermeyer

{"title":"Absence seizures and the frontal lobe.","authors":"A Pavone, E Niedermeyer","doi":"10.1177/155005940003100309","DOIUrl":"https://doi.org/10.1177/155005940003100309","url":null,"abstract":"There is no doubt that the frontal lobe plays a major role in the 3/sec spike-wave absence seizure. It is pointed out initially that the controversies of cortical vs. thalamic origin of the spike-waves and the associated absence can be laid at rest as far as human absence seizures and human primary generalized epilepsy (PGE) are concerned: their origin is cortical with maximal frontal lobe involvement. Experimentally-induced spike-wave bursts or spontaneous spike-waves in animals pertain to other forms of epileptic seizure disorder. The frontal maximum of the 3/sec spike-wave pattern indeed indicates maximal frontal lobe involvement including both prefrontal and frontomotor portions. The absence as such is presumed to be a suspension of the working memory--an eminently frontal lobe function. This explains the immediate restoration of ictally-impaired neurocognitive functions right at the termination of the seizures. This concept can be applied not only to the classical absence occurring in PGE but also to the rare cases of secondary bilateral synchrony with a primary frontal epileptogenic focus leading to true (though very slightly different) absences.","PeriodicalId":75713,"journal":{"name":"Clinical EEG (electroencephalography)","volume":"31 3","pages":"153-6"},"PeriodicalIF":0.0,"publicationDate":"2000-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/155005940003100309","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21763148","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 51

Real-time detection of epileptiform activity in the EEG: a blinded clinical trial. 脑电图中癫痫样活动的实时检测:一项盲法临床试验。

Clinical EEG (electroencephalography) Pub Date : 2000-07-01 DOI: 10.1177/155005940003100304

M A Black, R D Jones, G J Carroll, A A Dingle, I M Donaldson, P J Parkin

{"title":"Real-time detection of epileptiform activity in the EEG: a blinded clinical trial.","authors":"M A Black, R D Jones, G J Carroll, A A Dingle, I M Donaldson, P J Parkin","doi":"10.1177/155005940003100304","DOIUrl":"https://doi.org/10.1177/155005940003100304","url":null,"abstract":"The aim of this study was to determine the performance of a PC-based system for real-time detection and topographical mapping of epileptiform activity (EA) in the EEG during routine clinical recordings. The system incorporates a mimetic stage to locate candidate spikes (including sharp-waves) followed by two expert-system-based stages, which utilize spatial and wide-temporal contextual information in deciding whether candidate events are epileptiform or not. The data comprised 521 consecutive routine clinical EEG recordings (173 hours). Performance was evaluated by comparison with three independent electroencephalographers (EEGers-I). A second group of two EEGers (EEGers-II) separately interpreted the spike topographical maps and, for EEGs categorized as containing only questionable EA by the detection system, reviewed 6 sec segments of raw EEG centered on each questionable event. Thirty-eight of the EEGs were considered to contain definite EA by at least two of EEGers-I. The false detection rate of the system was 0.41 per hour. The system was found to have a sensitivity of 76% and a selectivity of 41% for EEGs containing definite EA. However, it only missed detection of EA in 5% of the recordings. EEGers-II agreed with EEGers-I on the distribution (generalized, lateralized, focal, multifocal) of EA in 79% of cases. This is by far the largest clinical evaluation of computerized spike detection reported in the literature and the only one to apply this in routine clinical recordings. The false detection rate is the lowest ever reported, suggesting that this multi-stage rule-based system is a powerful and practical tool in clinical electroencephalography and long-term EEG monitoring.","PeriodicalId":75713,"journal":{"name":"Clinical EEG (electroencephalography)","volume":"31 3","pages":"122-30"},"PeriodicalIF":0.0,"publicationDate":"2000-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/155005940003100304","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21763143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 30

Nonconvulsive status epilepticus resulting from Jarisch-Herxheimer reaction in a patient with neurosyphilis. 神经梅毒患者由Jarisch-Herxheimer反应引起的非惊厥性癫痫持续状态。

Clinical EEG (electroencephalography) Pub Date : 2000-07-01 DOI: 10.1177/155005940003100306

S Kojan, P C Van Ness, R Diaz-Arrastia

引用次数: 20

Topographic quantitative analysis of the intrinsic alpha rhythm in chronic obstructive pulmonary disease. 慢性阻塞性肺疾病内禀α节律的地形定量分析。

Clinical EEG (electroencephalography) Pub Date : 2000-07-01 DOI: 10.1177/155005940003100307

R R Reeves, F A Struve, G Patrick, D K Payne, L L Thirstrup

引用次数: 5

Early-latency somatosensory evoked potentials elicited by electrical acupuncture after needling acupoint LI-4. 电针针刺LI-4穴后诱发的早潜伏期体感诱发电位。

Clinical EEG (electroencephalography) Pub Date : 2000-07-01 DOI: 10.1177/155005940003100311

H Wei, J Kong, D Zhuang, H Shang, X Yang

{"title":"Early-latency somatosensory evoked potentials elicited by electrical acupuncture after needling acupoint LI-4.","authors":"H Wei, J Kong, D Zhuang, H Shang, X Yang","doi":"10.1177/155005940003100311","DOIUrl":"https://doi.org/10.1177/155005940003100311","url":null,"abstract":"The stimulating methods of prior studies on somatosensory evoked potentials (SEPs) elicited by acupoint stimulus had involved surface electrodes, while the clinical practice of acupuncture is mostly performed by inserting the acupuncture needle inside the body. Clinical observations show that there are often some special sensations when LI-4 is needled. To observe if the SEPs produced by acupoint acupuncture had a distinguishing property, we studied the SEPs elicited by electrical acupuncture after the acupuncture needle was inserted into LI-4 and its control point, and then mapped them with the 128-channel Electric Brain Signal Image system. We also compared this to SEPs by median nerve stimuli. Results showed that the most interesting finding was the marked differences of N1-P1 and N2-P2 amplitude between SEPs at LI-4 (SEP-LI) and its control point (SEP-CP), which were in the opposite direction. Marked differences were also found between latencies and amplitudes of the SEPs elicited by acupuncture and by median nerve stimulus (SEP-M). The differences between SEP-LI and SEP-CP might be due to the additional effects of the activation of nerve endings and muscle spindles in LI-4 to the SEPs formed by the activation of superficial and deep radial nerves during electrical acupuncture. The differences between SEPs to acupoint and median nerve stimuli might be mainly due to the different distances from the stimulated regions to the cerebral cortex, the diversity and the number of activated fibers.","PeriodicalId":75713,"journal":{"name":"Clinical EEG (electroencephalography)","volume":"31 3","pages":"160-4"},"PeriodicalIF":0.0,"publicationDate":"2000-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/155005940003100311","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21763150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 18

Nose wiping: an unrecognized automatism in absence seizures. 擦鼻子:一种未被识别的无意识行为。

Clinical EEG (electroencephalography) Pub Date : 2000-07-01 DOI: 10.1177/155005940003100310

B Baykan, C Gürses, A Gökyiğit

引用次数: 5

EEG in the elderly: seizures vs. syncope. 老年人的脑电图:癫痫与晕厥。

Clinical EEG (electroencephalography) Pub Date : 2000-07-01 DOI: 10.1177/155005940003100305

J R Hughes, M L Zialcita

{"title":"EEG in the elderly: seizures vs. syncope.","authors":"J R Hughes, M L Zialcita","doi":"10.1177/155005940003100305","DOIUrl":"https://doi.org/10.1177/155005940003100305","url":null,"abstract":"The EEGs of elderly patients with a definite seizure disorder (161 patients; 302 EEGs) were compared to patients with \"syncope\" (122 patients; 133 EEGs), especially to determine if the latter patients were sufficiently similar to the seizure patients that the syncope could be viewed as a seizure phenomenon. The two groups were similar only by the predominance of females in both groups (61-62%) and otherwise were very different. The seizure group had a higher incidence of (1) etiology (83 vs. 39%), (2) epileptiform discharges (93 vs. 49%), with a different location, more often parasagittal, and different number often with active or very active foci, (3) frontal slow waves, (4) more severe slow wave abnormalities, (5) slower background frequencies, that were less well organized and developed and (6) abnormal records. The conclusion is that the syncope patients as a group are usually not simply seizure patients. Regardless of etiology, the patients with \"syncope\" (33% with cerebrovascular and 21% cardiac etiologies) showed nearly a 50% incidence of epileptiform discharges, demonstrating a complex interrelationship between cardiac and cerebral mechanisms, which are discussed. The conclusion is that epileptiform activity in elderly patients with syncope is likely to be mildly epileptogenic, and may require additional cardiovascular mechanisms to generate an attack of unconsciousness.","PeriodicalId":75713,"journal":{"name":"Clinical EEG (electroencephalography)","volume":"31 3","pages":"131-7"},"PeriodicalIF":0.0,"publicationDate":"2000-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/155005940003100305","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21763144","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 12

The history of the Electroencephalography and Clinical Neuroscience Society (ECNS). Part I: A brief history of the American Medical Electroencephalographic Association (AMEEGA). 脑电图和临床神经科学学会(ECNS)的历史。第一部分:美国医学脑电图协会(AMEEGA)的简史。

Clinical EEG (electroencephalography) Pub Date : 2000-04-01 DOI: 10.1177/155005940003100202

S Khoshbin

引用次数: 1