We have located links that may give you full text access.
Electrooculogram and submandibular montage to distinguish different eye, eyelid, and tongue movements in electroencephalographic studies.
Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology 2018 November
OBJECTIVE: We propose an electrooculogram and submandibular montage that helps to discriminate eye/eyelid/tongue movements and to differentiate them from epileptiform activity or slowing on electroencephalography (EEG).
METHODS: We analyzed different eye/eyelid and tongue movements in 6 and 4 patients, respectively. Six peri-orbitally and one submandibular electrodes were placed. We referred these electrodes to an indifferent reference (Cz/Pz) and we recorded eye/eyelid and tongue movements simultaneously with the 10-20 system EEG. Additionally, we analyzed 2 seizures with the electrooculogram montage.
RESULTS: The electrooculogram deflections always showed an opposite phase direction when eye/eyelid movements occurred. Conversely, epileptiform activity produced deflections in the same phase direction in all electrooculogram electrodes. The electrooculogram montage was able to distinguish eye ictal semiology. Vertical tongue movements showed opposite phase deflections between the submandibular and the inferior ocular electrodes. Horizontal tongue movements revealed opposite phase reversal deflections between both inferior ocular electrodes.
CONCLUSIONS: The proposed montage accurately defines different eye/eyelid and tongue movements from brainwave activity. Additionally, it is useful to differentiate eye/eyelid movements from epileptiform activity and to characterize ictal ocular semiology, which can help localize or lateralize the epileptogenic zone.
SIGNIFICANCE: We propose this new montage to provide added value to prolonged video-EEG studies.
METHODS: We analyzed different eye/eyelid and tongue movements in 6 and 4 patients, respectively. Six peri-orbitally and one submandibular electrodes were placed. We referred these electrodes to an indifferent reference (Cz/Pz) and we recorded eye/eyelid and tongue movements simultaneously with the 10-20 system EEG. Additionally, we analyzed 2 seizures with the electrooculogram montage.
RESULTS: The electrooculogram deflections always showed an opposite phase direction when eye/eyelid movements occurred. Conversely, epileptiform activity produced deflections in the same phase direction in all electrooculogram electrodes. The electrooculogram montage was able to distinguish eye ictal semiology. Vertical tongue movements showed opposite phase deflections between the submandibular and the inferior ocular electrodes. Horizontal tongue movements revealed opposite phase reversal deflections between both inferior ocular electrodes.
CONCLUSIONS: The proposed montage accurately defines different eye/eyelid and tongue movements from brainwave activity. Additionally, it is useful to differentiate eye/eyelid movements from epileptiform activity and to characterize ictal ocular semiology, which can help localize or lateralize the epileptogenic zone.
SIGNIFICANCE: We propose this new montage to provide added value to prolonged video-EEG studies.
Full text links
Related Resources
Trending Papers
Heart failure with preserved ejection fraction: diagnosis, risk assessment, and treatment.Clinical Research in Cardiology : Official Journal of the German Cardiac Society 2024 April 12
Proximal versus distal diuretics in congestive heart failure.Nephrology, Dialysis, Transplantation 2024 Februrary 30
Efficacy and safety of pharmacotherapy in chronic insomnia: A review of clinical guidelines and case reports.Mental Health Clinician 2023 October
World Health Organization and International Consensus Classification of eosinophilic disorders: 2024 update on diagnosis, risk stratification, and management.American Journal of Hematology 2024 March 30
Get seemless 1-tap access through your institution/university
For the best experience, use the Read mobile app
All material on this website is protected by copyright, Copyright © 1994-2024 by WebMD LLC.
This website also contains material copyrighted by 3rd parties.
By using this service, you agree to our terms of use and privacy policy.
Your Privacy Choices
You can now claim free CME credits for this literature searchClaim now
Get seemless 1-tap access through your institution/university
For the best experience, use the Read mobile app