Neurology & clinical neurophysiology : NCN最新文献

MRI in amyotrophic lateral sclerosis: hyperintensity of the corticospinal tract. 肌萎缩侧索硬化症的MRI:皮质脊髓束高强度。

Neurology & clinical neurophysiology : NCN Pub Date : 2005-12-20

S Kriaa, M Zbidi, C Hafsa, M Golli, A Gannouni

引用次数: 0

Ictal onset slow potential shifts recorded with hippocampal depth electrodes. 海马体深度电极记录的初起缓慢电位转移。

Neurology & clinical neurophysiology : NCN Pub Date : 2005-12-16

E C Mader, B J Fisch, M E Carey, N R Villemarette-Pittman

{"title":"Ictal onset slow potential shifts recorded with hippocampal depth electrodes.","authors":"E C Mader, B J Fisch, M E Carey, N R Villemarette-Pittman","doi":"","DOIUrl":"","url":null,"abstract":"Purpose: Reports of direct current shifts at the onset of scalp-recorded seizures prompted us to inspect depth-recorded seizures for the presence of similar slow potential shifts at the onset of the seizure to determine whether slow potential (SP) shifts actually occur at the onset of depth-recorded seizures and if these shifts can facilitate localization of the seizure focus.Methods: With the low frequency filter \"opened\" (LLF=0.1 Hz, HLF=70 Hz, 3 dB/octave), 32 seizures recorded with hippocampal depth and subdural electrodes were visually inspected to identify an SP shift at the onset of the seizure. A seizure was considered as having an SP shift when the slow potential waveform was > 1.5 sec in duration and > 100 microV in amplitude. Seizures were obtained from 5 subjects; 4 underwent epilepsy surgery (3=Engel I, 1=Engel II) and one received VNS. SP shift duration, peak voltage and polarity were measured for each seizure. The ability to identify seizures based on SP shift configuration was also evaluated.Results: In 84% of the seizures, ictal onset was associated with a localized SP shift. Shift duration ranged from 1.5 sec to 11.5 sec (96% > 2 sec, 62% > 5 sec). The maximum shift ranged from 139 microV to 2305 microV (mean = 1123 microV, SD = 660 microV). In all the seizures, polarity was positive at the point of maximum shift. By visually examining the SP shift, seizures could be identified as originating from the same focus or from different foci.Conclusions: The onset of depth-recorded seizures appears to be commonly associated with a localized positive SP shift. An SP shift at the onset of depth-recorded seizures is likely to be a useful visual aid for localizing electrographic seizure onset.","PeriodicalId":83814,"journal":{"name":"Neurology & clinical neurophysiology : NCN","volume":"2005 ","pages":"4"},"PeriodicalIF":0.0,"publicationDate":"2005-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"26417437","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

Myofasciitis and polyneuritis related to Buprenorphine abuse. 肌筋膜炎和多神经炎与丁丙诺啡滥用有关。

Neurology & clinical neurophysiology : NCN Pub Date : 2005-11-02

V Sharma, S Vasoo, B Ong

引用次数: 0

EMG vagus nerve stimulator artifact. 迷走神经刺激器的肌电图。

Neurology & clinical neurophysiology : NCN Pub Date : 2005-02-22

S Bejanishvili, L E Osborne, K Messenger, P Olejniczak, A Gutierrez

引用次数: 0

Magnetocardiographic study of ventricular repolarization in hypertensive patients with and without left ventricular hypertrophy. 伴有和不伴有左心室肥厚的高血压患者心室复极的心磁图研究。