EEG-EMG Zeitschrift fur Elektroenzephalographie, Elektromyographie und verwandte Gebiete最新文献_第5页

[Shape changes in contrast VEP in multiple sclerosis: relation to the type of lesion]. [多发性硬化症VEP的形状变化:与病变类型的关系]。

EEG-EMG Zeitschrift fur Elektroenzephalographie, Elektromyographie und verwandte Gebiete Pub Date : 1991-12-01

K Lowitzsch

引用次数: 0

[Pattern-reversal visual evoked potentials and electroretinography in the early diagnosis of chronic simple glaucoma]. [模式反转视觉诱发电位和视网膜电图在慢性单纯性青光眼早期诊断中的应用]。

EEG-EMG Zeitschrift fur Elektroenzephalographie, Elektromyographie und verwandte Gebiete Pub Date : 1991-12-01

K Lowitzsch, R Welt

引用次数: 0

[Visual P300 in acute hepatic encephalopathy resulting from non-A-non-B fulminant hepatitis: analysis of the course before and after orthotopic liver transplantation]. [非a -非b型暴发性肝炎致急性肝性脑病的视觉P300:原位肝移植前后病程分析]。

EEG-EMG Zeitschrift fur Elektroenzephalographie, Elektromyographie und verwandte Gebiete Pub Date : 1991-12-01

C F Kügler, A Taghavy, W E Fleig, E G Hahn

{"title":"[Visual P300 in acute hepatic encephalopathy resulting from non-A-non-B fulminant hepatitis: analysis of the course before and after orthotopic liver transplantation].","authors":"C F Kügler, A Taghavy, W E Fleig, E G Hahn","doi":"","DOIUrl":"","url":null,"abstract":"The method of Pattern Flash elicited P300 (PFP300) has been applied to evaluate the dynamic alterations in cognitive function of a 58 year old woman (H. C.) presenting with hepatic failure due to fulminant hepatitis Non-A-Non-B. At the time of the first investigation she complained about slight memory deficits and revealed signs of hepatic encephalopathy grade I according to Parson-Smith et al. (bilirubin 26.0 mg/dl, NH3 102 micrograms/dl, electrolytes and blood sugar normal). Psychometric tests: Number connection test (NCT): 54 s (28-53 s, greater than 2sd); Syndrom-Kurz-Test (SKT): total score = 9 (0-4), compatible with a slight \"organic brain syndrome\". PFP300: N250 latency 343.5 ms (276.4 +/- 14.7 ms, greater than 4sd); PFP300-latency: 442.5 ms (326.9 +/- 14.7, greater than 7sd); PFP300 amplitudes: 16.0 microV (14.4 +/- 8.4, +/- 1sd), indicating severe disturbance in visual discrimination without visual attention deficits. Due to progressive deterioration of liver function the patient had to undergo orthotopic liver transplantation. The patient was reinvestigated four weeks later. The clinical and laboratory status were normal and no signs of hepatic encephalopathy could be detected clinically or by means of the psychometric tests. The parameters of the PFP300 complex had also completely returned to normal: N250-latency: 273.0 ms (less than 1sd); PFP300-latency: 348.0 ms (less than 1sd). This observation suggests that the analysis of P300 can help to detect and follow minor cognitive deficits in cases of acute hepatic encephalopathy. It further underscores the hepatic etiology as well as the potential reversibility of this type of encephalopathy.","PeriodicalId":75812,"journal":{"name":"EEG-EMG Zeitschrift fur Elektroenzephalographie, Elektromyographie und verwandte Gebiete","volume":"22 4","pages":"259-63"},"PeriodicalIF":0.0,"publicationDate":"1991-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12948668","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: 0

[Retinal and cortical electrical activity in man: physiologic bases and clinical applications]. [人视网膜和皮质电活动:生理基础和临床应用]。

EEG-EMG Zeitschrift fur Elektroenzephalographie, Elektromyographie und verwandte Gebiete Pub Date : 1991-12-01

W Skrandies

引用次数: 0

[Neuro-monitoring using visual evoked potentials in comatose neurologic intensive care patients]. [用视觉诱发电位监测昏迷神经病重症监护病人]。

EEG-EMG Zeitschrift fur Elektroenzephalographie, Elektromyographie und verwandte Gebiete Pub Date : 1991-12-01

G Adler, A Bransi, H W Prange

引用次数: 0

[VEP in the determination of multiple lesions in the visual system in patients with multiple sclerosis]. [VEP在多发性硬化症患者视觉系统多发性病变判断中的应用]。

EEG-EMG Zeitschrift fur Elektroenzephalographie, Elektromyographie und verwandte Gebiete Pub Date : 1991-12-01

H Röder

引用次数: 0

[Visual evoked potentials in Alzheimer's and Parkinson disease]. [阿尔茨海默病和帕金森病的视觉诱发电位]。

EEG-EMG Zeitschrift fur Elektroenzephalographie, Elektromyographie und verwandte Gebiete Pub Date : 1991-12-01

R Zimmer, H Walther, A Kurz, M Haupt, F Lehmann-Horn, H Lauter

{"title":"[Visual evoked potentials in Alzheimer's and Parkinson disease].","authors":"R Zimmer, H Walther, A Kurz, M Haupt, F Lehmann-Horn, H Lauter","doi":"","DOIUrl":"","url":null,"abstract":"Harding et al. suggested at first that an increase of P2 latency in flash VEP without an increase of P2 latency in pattern reversal VEP may be a diagnostic marker of Alzheimer's disease. Up to now there is no convincing evidence for this hypothesis. The purpose of the present study was to examine this hypotheses in an extended group of patients with Alzheimer's disease (n = 36). In addition, a group of patients with Parkinson's disease (n = 8) without dementia syndrome and a group of healthy elderly controls (n = 46) was investigated in order to determine the sensitivity and specificity of these VEP parameters. The results confirmed significant group differences between patients with Alzheimer's disease and healthy controls concerning the increase of Flash P2 latency and unchanged latency of P2 in the pattern reversal VEP. No significant correlations were found between duration of illness and mental test scores. The group differences of P2 latency in the flash VEP for patients with Parkinson's disease and healthy controls were also significant. Therefore, the increase of flash P2 latency in VEP does not seem to be specific for Alzheimer's disease nor for dementia syndrome. The pathological mechanism causing the flash P2 latency increase in a remarkable number of neuropsychiatric patients should be elucidated in further experimental investigations.","PeriodicalId":75812,"journal":{"name":"EEG-EMG Zeitschrift fur Elektroenzephalographie, Elektromyographie und verwandte Gebiete","volume":"22 4","pages":"239-45"},"PeriodicalIF":0.0,"publicationDate":"1991-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12948741","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: 0

[Visual evoked potentials and electroretinography in neurologic diagnosis]. [视觉诱发电位和视网膜电图在神经系统诊断中的应用]。

EEG-EMG Zeitschrift fur Elektroenzephalographie, Elektromyographie und verwandte Gebiete Pub Date : 1991-12-01

K Lowitzsch

引用次数: 0

[Experience with flash-evoked visual potentials in unconscious patients in the neurologic intensive care station]. [神经内科重症监护站昏迷病人的闪现诱发视觉电位研究经验]。

EEG-EMG Zeitschrift fur Elektroenzephalographie, Elektromyographie und verwandte Gebiete Pub Date : 1991-12-01

D Krieger, H P Adams, W Hacke

{"title":"[Experience with flash-evoked visual potentials in unconscious patients in the neurologic intensive care station].","authors":"D Krieger, H P Adams, W Hacke","doi":"","DOIUrl":"","url":null,"abstract":"Evoked potential monitoring has become a widely used procedure in the evaluation of stuporous patients on neurological intensive care units. Currently BAEP and SEP are preferentially employed. VEP monitoring is a relatively uncommon procedure, because late evoked potentials tend to be relatively unstable, varying in amplitude to a moderate extend from changes of temperature, drugs, attention and the level of consciousness. A valuable approach of VEP monitoring on intensive care units are structures of the visual system at risk in vascular disease of the vertebrobasilar system or during evaluated intracranial pressure (EIP). This study uses the data of 20 stuporous patients presenting with either intracranial mass lesions or vascular diseases of the vertebrobasilar system and 20 control persons. Light emitting diode (LED)-VEP are compared with checkerboard stimulation in control persons using the technique of cross-correlation. The comparison of the control group with patients using LED-VEP allows definition of limits for normal variation as a base for identification of significant changes. Despite methodical restrictions of LED-VEP, our results are in favour of serial studies in patients with EIP. There are no corresponding findings in LED-VEP and vascular lesions of the retrochiasmatic visual system.","PeriodicalId":75812,"journal":{"name":"EEG-EMG Zeitschrift fur Elektroenzephalographie, Elektromyographie und verwandte Gebiete","volume":"22 4","pages":"246-53"},"PeriodicalIF":0.0,"publicationDate":"1991-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12948742","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: 0

[Saccadic eye movements: methodologic aspects and possibilities of clinical use]. [跳眼运动:方法学方面和临床应用的可能性]。

EEG-EMG Zeitschrift fur Elektroenzephalographie, Elektromyographie und verwandte Gebiete Pub Date : 1991-09-01

K P Hoffmann, A Plewe, G Mühlau, R Kästner

引用次数: 0