Cited by 65Epilepsy research and treatmentEEG and Brain-Computer InterfacesContext-Aware Activity Recognition Systems

Tracking generalized tonic-clonic seizures with a wrist accelerometer linked to an online database

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Velez, Mariel, Fisher, Robert S., Bartlett, Victoria, Le, Scheherazade·2016·Seizure

Abstract

Purpose Clinical management of epilepsy and current epilepsy therapy trials rely on paper or electronic diaries often with inaccurate self-reported seizure frequency as the primary outcome. This is the first study addressing the feasibility of detecting and recording generalized tonic-clonic seizures (GTCS) through a biosensor linked to an online seizure database.Method A prospective trial was conducted with video-EEG (vEEG) in an epilepsy monitoring unit. Patients wore a wristwatch accelerometer that detected shaking and transmitted events via Bluetooth® to a bedside electronic tablet and then via Wi-Fi to an online portal. The watch recorded the date, time, audio, duration, frequency and amplitude of events. Events logged by the watch and recorded in a bedside paper diary were measured against vEEG, the "gold standard."Results Thirty patients were enrolled and 62 seizures were recorded on vEEG: 31 convulsive and 31 non-convulsive. Twelve patients had a total of 31 convulsive seizures, and of those, 10 patients had 13 GTCS. The watch captured 12/13 (92.3%) GTCS. Watch audio recordings were consistent with seizures in 11/12 (91.6%). Data were successfully transferred to the bedside tablet in 11/12 (91.6%), and to the online database in 10/12 (83.3%) GTCS. The watch recorded 81 false positives, of which 42/81 (51%) were cancelled by the patients. Patients and caregivers verbally reported 15/62 seizures (24.2% sensitivity) but no seizures were recorded on paper logs.Conclusion Automatic detection and recording of GTCS to an online database is feasible and may be more informative than seizure logging in a paper diary.

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Crossref · 10.1016/j.seizure.2016.04.009

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Authors
Velez, M., Fisher, R. S., Bartlett, V., & Le, S.
Affiliations
  • Stanford Medicine (US)
  • Harvard University (US)
Corresponding author
Le, Scheherazade
Venue
Seizure
Publisher
Elsevier BV
Published
2016-07
Volume
39
Pages
13-18
ISSN
1059-1311 (ISSN-L)
OpenAlex
W2343145876
Cited by
65
References
22
Citations by year
2026: 3 · 2025: 6 · 2024: 7 · 2023: 1 · 2022: 4 · 2021: 10 · 2020: 9 · 2019: 5 · 2018: 12 · 2017: 6 · 2016: 2
FWCI
7.40
Type
journal article
Language
en
Open access
Locations
  • Seizure (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Epilepsy research and treatment
  • Life Sciences › Neuroscience › Cognitive Neuroscience › EEG and Brain-Computer Interfaces
  • Physical Sciences › Computer Science › Computer Vision and Pattern Recognition › Context-Aware Activity Recognition Systems
Keywords
generalized tonic-clonic seizures, wrist accelerometer, seizure detection, biosensors, epilepsy monitoring, video-EEG monitoring, Bluetooth data transmission
MeSH terms
Adult, Aged, Electroencephalography, Epilepsy, Tonic-Clonic, Female, Humans, Male, Middle Aged, Prospective Studies, Video Recording, Databases, Factual, Monitoring, Ambulatory, Internet, Young Adult, Accelerometry

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