Extreme delta brush in anti‐NMDAR encephalitis: Mimics and chameleons

[...]although the distribution of beta bursts was generalized, the beta amplitude was lowest in the Cz. [...]because the patients exhibited orofacial dyskinesia, which can involve several muscles (tongue, masseter, frontalis, and temporal muscles), the widely distributed synchronous beta might have...

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Bibliographic Details
Published inEpilepsia open Vol. 6; no. 2; pp. 443 - 446
Main Authors Neshige, Shuichiro, Iryo, Takafumi, Ueno, Hiroki, Maruyama, Hirofumi
Format Journal Article
LanguageEnglish
Published United States John Wiley & Sons, Inc 01.06.2021
John Wiley and Sons Inc
Wiley
Subjects
Anesthesia
Dyskinesia
Electroencephalography
Electromyography
Encephalitis
Letter
Letters
Muscle contraction
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Summary:[...]although the distribution of beta bursts was generalized, the beta amplitude was lowest in the Cz. [...]because the patients exhibited orofacial dyskinesia, which can involve several muscles (tongue, masseter, frontalis, and temporal muscles), the widely distributed synchronous beta might have been acceptable for EMG. True EDB typically involves beta activity on the descending part of the delta slow. 2,5,6 In contrast, the present “EDB mimic” involved beta activity on the ascending part of the slow. [...]we concluded that the present EEG findings could include a combination of 1) EMG activities of the orofacial muscles and 2) large potentials of the genioglossus muscle (glossokinetic potential).
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ObjectType-Correspondence-1
ISSN:2470-9239
2470-9239
DOI:10.1002/epi4.12491