EEG-EMG Zeitschrift fur Elektroenzephalographie, Elektromyographie und verwandte Gebiete最新文献_第2页

[Automatic (computer-assisted) EEG analysis in comparison with visual EEG analysis in patients following minor cranio-cerebral trauma (a follow-up study)]. [自动(计算机辅助)脑电分析与视觉脑电分析在轻度颅脑外伤患者中的比较(一项随访研究)]。

EEG-EMG Zeitschrift fur Elektroenzephalographie, Elektromyographie und verwandte Gebiete Pub Date : 1992-09-01

A von Bierbrauer, K Weissenborn, H Hinrichs, M Scholz, H Künkel

{"title":"[Automatic (computer-assisted) EEG analysis in comparison with visual EEG analysis in patients following minor cranio-cerebral trauma (a follow-up study)].","authors":"A von Bierbrauer, K Weissenborn, H Hinrichs, M Scholz, H Künkel","doi":"","DOIUrl":"","url":null,"abstract":"The study was designed to examine the clinical applicability and use of computer-assisted EEG-analysis in comparison to visual EEG-analysis in patients with minor head injuries. For this in 31 patients the following examinations were performed within the first 24 hours, one, three and eight weeks after traumatization: EEG, neurological examination and standardized evaluation of subjective complaints. The EEG was analysed visually as well as computer-assisted. The results were compared to the neurological findings and subjective complaints. Reversible posttraumatic EEG-changes were observed in 50% of all patients. The results of computer-analysis and visual analysis were equivalent in respect to baseline-activity (as one of the main characteristic EEG-features). Furthermore, based on computer-assisted analysis a discriminant function is provided, which is of diagnostic and prognostic value in the single patient. We conclude that the computer-assisted EEG-analysis can be a useful alternative in EEG-routine diagnosis after minor head injuries.","PeriodicalId":75812,"journal":{"name":"EEG-EMG Zeitschrift fur Elektroenzephalographie, Elektromyographie und verwandte Gebiete","volume":"23 3","pages":"151-7"},"PeriodicalIF":0.0,"publicationDate":"1992-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12596501","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

[Mapping spectral EMG parameters of the masseter muscle in normal probands under defined loads]. [定义载荷下正常先测者咬肌的频谱肌电参数映射]。

EEG-EMG Zeitschrift fur Elektroenzephalographie, Elektromyographie und verwandte Gebiete Pub Date : 1992-09-01

N P Schumann, H C Scholle, C Anders, E Mey

引用次数: 0

[Computer-assisted analysis of the electromyogram for routine clinical use]. [临床常规应用的计算机辅助肌电图分析]。

EEG-EMG Zeitschrift fur Elektroenzephalographie, Elektromyographie und verwandte Gebiete Pub Date : 1992-09-01

J F Strempel, H Feistner, T F Münte, H Hinrichs, H J Heinze

{"title":"[Computer-assisted analysis of the electromyogram for routine clinical use].","authors":"J F Strempel, H Feistner, T F Münte, H Hinrichs, H J Heinze","doi":"","DOIUrl":"","url":null,"abstract":"A computerized EMG analysis system implemented on an MS-DOS computer was developed explicitly for clinical routine usage. It incorporates analysis of interference pattern as well as of motor unit action potentials (MUAPs). Key features of MUAP analysis are the automatic segmentation and parameterization of the EMG signal and the automatic assignment of MUAPs to motor units. Determination of muscle activity is based on threshold detection of the signal's first derivative, leading to the definition of a MUAPs central component. Its parameters (length, amplitude, maximal steepness, area between curve and base-line, area between first derivative and base-line, number of turns etc.) are used when comparing MUAPs. The automatic assignment of MUAPs to motor units was implemented as an iterative procedure. MUAPs are compared to a reference MUAP and eventually assigned to it if their parameters are sufficiently similar. For such a group of MUAPs the most representative MUAP is determined which is then used as new reference MUAP in the next iteration step. Most important for clinical routine usage are simple handling, speed and the clearly arranged presentation of results. The system allows for interactive modification of MUAP assignment as well as start and end points of every MUAP. Analysis results may be displayed on the screen and printed, giving the user a quick impression of the muscle under study. Thus this method meets basic requirements for computer assisted decision making in differential diagnosis.","PeriodicalId":75812,"journal":{"name":"EEG-EMG Zeitschrift fur Elektroenzephalographie, Elektromyographie und verwandte Gebiete","volume":"23 3","pages":"127-34"},"PeriodicalIF":0.0,"publicationDate":"1992-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12596496","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

[A comparative study of the sensory conduction velocity of the sural nerve using surface and needle electrodes]. [面电极和针电极对腓肠神经感觉传导速度的比较研究]。

EEG-EMG Zeitschrift fur Elektroenzephalographie, Elektromyographie und verwandte Gebiete Pub Date : 1992-09-01

W Strobl, F Reisecker, P Költringer, F Leblhuber

{"title":"[A comparative study of the sensory conduction velocity of the sural nerve using surface and needle electrodes].","authors":"W Strobl, F Reisecker, P Költringer, F Leblhuber","doi":"","DOIUrl":"","url":null,"abstract":"In 18 healthy persons aged 22-71 years and 17 patients suffering from clinically defined polyneuropathy the NCV of the sural nerve was measured both by antidromic technic recorded by surface electrodes and by orthodromic technique recorded by needle electrodes. Stimulation was done by bipolar surface electrodes in all cases. The skin temperature was warmed up to the minimum of 35 degrees C. The results showed in both groups a highly significant correlation of the NCV measured by antidromic and orthodromic technique. With increasing age the NCV decreased, but this was not significant. In all healthy persons sensory nerve potentials could be recorded with both techniques. In polyneuropathy missing of sensory potentials was higher in patients investigated by the antidromic technique than by orthodromic. For clinical practice measurement of NCV in sural nerve using antidromic technique should be preferred because of its simpler and faster achieving, its lower discomfort for the patient and avoiding risk of infection. However in case of missing nerve potentials, orthodromic investigation using needle electrodes for recording should be added.","PeriodicalId":75812,"journal":{"name":"EEG-EMG Zeitschrift fur Elektroenzephalographie, Elektromyographie und verwandte Gebiete","volume":"23 3","pages":"135-9"},"PeriodicalIF":0.0,"publicationDate":"1992-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12596497","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

[Dextrose and vigilance: the effect of dextrose on the spectro-analytic parameters of pharmaco-EEG]. [葡萄糖与警觉性:葡萄糖对药物-脑电图光谱分析参数的影响]。

EEG-EMG Zeitschrift fur Elektroenzephalographie, Elektromyographie und verwandte Gebiete Pub Date : 1992-09-01

B Gessner, P J Cnota, B Schaaf

{"title":"[Dextrose and vigilance: the effect of dextrose on the spectro-analytic parameters of pharmaco-EEG].","authors":"B Gessner, P J Cnota, B Schaaf","doi":"","DOIUrl":"","url":null,"abstract":"In a randomized single-blind cross-over-design the effect of 15 g dextrose was investigated against placebo with 48 healthy subjects at two different days each. The quantitative pharmaco-EEG was recorded occipitocentral at the left side (O1-Cz) under vigilance controlled conditions and then under resting conditions (three minutes each). Having measured its baseline it was repeated six times every 20 minutes starting 10 minutes after the application of the substance. After the administration of dextrose a stabilization of vigilance could be seen in the EEG by the following differences of statistical significance (p < = 0.05) between dextrose and placebo under resting recording conditions: In the first control (14.-16. minute post) there was a significant decrease of the relative power in the delta and in the theta range combined with an increase of alpha 2. In the second control (34.-36. minute post) there was a significant decrease of relative power in the theta range and significant increase in the alpha 1 range. In the third control (54.-56. minute post) and later on no effects of dextrose were left in the pharmaco-EEG. The significant differences in the first and second control have to be interpreted as follows: After the administration of dextrose the level of vigilance was increased compared to the placebo group.","PeriodicalId":75812,"journal":{"name":"EEG-EMG Zeitschrift fur Elektroenzephalographie, Elektromyographie und verwandte Gebiete","volume":"23 3","pages":"158-62"},"PeriodicalIF":0.0,"publicationDate":"1992-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12596502","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

[Electroencephalography and cranial computed tomography in a posterior infarct]. [脑电图和颅脑计算机断层扫描在脑后梗死中的应用]。

EEG-EMG Zeitschrift fur Elektroenzephalographie, Elektromyographie und verwandte Gebiete Pub Date : 1992-09-01

B Griewing, A Lütcke, L Mertins

引用次数: 0

[Quantitative topographic characterization of the myoelectric activity distribution of the masseter muscle: mapping of spectral EMG parameters]. [咬肌肌电活动分布的定量地形特征:频谱肌电参数的映射]。

EEG-EMG Zeitschrift fur Elektroenzephalographie, Elektromyographie und verwandte Gebiete Pub Date : 1992-09-01

H C Scholle, N P Schumann, C Anders, E Mey

{"title":"[Quantitative topographic characterization of the myoelectric activity distribution of the masseter muscle: mapping of spectral EMG parameters].","authors":"H C Scholle, N P Schumann, C Anders, E Mey","doi":"","DOIUrl":"","url":null,"abstract":"A new method for quantitative characterization of myoelectrical masseter activity distribution by mapping of spectral EMG-parameters is described. The surface electromyograms of M. masseter were monopolarly recorded (16 channels). On the basis of registered EMG intervals (512 ms) the spectral EMG power of several frequency bands was calculated (Fast Fourier Transformation). The spectral EMG parameters between the 16 electrode positions were estimated by linear interpolation (4-nearest neighbours algorithm). Afterwards the spectral EMG parameters were fitted in a grey-tone or colour scale with 10 intervals. The so obtained EMG activity maps (\"EMG-Maps\") permit a quantitative-topographic characterization of myoelectrical masseter activity during different functional load procedures. The frequency range which is to consider in masseter surface-EMG investigations encloses frequencies between 15 and 500 Hz. The topography of EMG activation pattern of M. masseter is only described in a comprehensive manner when the electrode array consists of 16 electrodes and more. During defined motor tasks like clenching with controlled forces the reproducibility of EMG-Maps which respect to the topography of EMG activity pattern is very high. The absolute values of spectral EMG power as well as power changes of selected band ranges during clenching correlate to the extent of chewing forces.","PeriodicalId":75812,"journal":{"name":"EEG-EMG Zeitschrift fur Elektroenzephalographie, Elektromyographie und verwandte Gebiete","volume":"23 3","pages":"115-20"},"PeriodicalIF":0.0,"publicationDate":"1992-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12597234","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

[Is the origin of the F-wave dependent on the magnitude of the motor unit?]. [f波的起源是否取决于运动单元的大小?]

EEG-EMG Zeitschrift fur Elektroenzephalographie, Elektromyographie und verwandte Gebiete Pub Date : 1992-09-01

K Wohlfarth, R Dengler, A Kossev, J Elek, M Schubert, W Wolf

引用次数: 0

[Evoked potentials following cerebral ischemia in the rat: the effect of the stimulus frequency]. [大鼠脑缺血后诱发电位:刺激频率的影响]。

EEG-EMG Zeitschrift fur Elektroenzephalographie, Elektromyographie und verwandte Gebiete Pub Date : 1992-09-01

M Kocher, T Miyazawa, R Bauer, K A Hossmann

引用次数: 0

[Are cognitive processes in a phase relation with 40 Hz EEG?]. [认知过程是否与40 Hz脑电图相关联?]。

EEG-EMG Zeitschrift fur Elektroenzephalographie, Elektromyographie und verwandte Gebiete Pub Date : 1992-06-01

B M Reuter, D B Linke, M Kurthen

引用次数: 0