An Affordable Method for Evaluation of Ataxic Disorders Based on Electrooculography.

Tytuł:: An Affordable Method for Evaluation of Ataxic Disorders Based on Electrooculography.
Autorzy:: López A; Departamento de Ingeniería Eléctrica, Electrónica, Computadores y Sistemas, Universidad de Oviedo, Campus de Gijón, 33204 Gijón, Spain.
Ferrero F; Departamento de Ingeniería Eléctrica, Electrónica, Computadores y Sistemas, Universidad de Oviedo, Campus de Gijón, 33204 Gijón, Spain. .
Postolache O; Instituto de Telecomunicações, Av. Rovisco Pais, 1, 1049-001 Lisboa, Portugal.; ISCTE-Instituto Universitario de Lisboa, Av. das Forças Armadas, 1649-026 Lisboa, Portugal.
Źródło:: Sensors (Basel, Switzerland) [Sensors (Basel)] 2019 Aug 30; Vol. 19 (17). Date of Electronic Publication: 2019 Aug 30.
Typ publikacji:: Journal Article
Język:: English
Imprint Name(s):: Original Publication: Basel, Switzerland : MDPI, c2000-
MeSH Terms:: Ataxia/*diagnosis
Electrooculography/*methods
Aged ; Computers ; Electrooculography/instrumentation ; Eye Movements ; Female ; Humans ; Male ; Middle Aged ; Photic Stimulation ; Reproducibility of Results ; Saccades ; Signal Processing, Computer-Assisted ; Software ; User-Computer Interface
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Contributed Indexing:: Keywords: ataxic disorders; electrooculogram (EOG); electrooculography; eye movement; signal processing
Entry Date(s):: Date Created: 20190905 Date Completed: 20200212 Latest Revision: 20231014
Update Code:: 20240105
PubMed Central ID:: PMC6751503
DOI:: 10.3390/s19173756
PMID:: 31480331
: Czasopismo naukowe

Pełny tekst

Ataxias are a group of neurodegenerative disorders characterized by cerebellar dysfunction that cause irregularities in the rate, rhythm, amplitude, and force of voluntary movements. The electrooculogram (EOG) may provide clues about ataxic disorders because most of these patients have difficulty with visual tracking and fixing their gaze. Using electrodes, EOG records the biopotentials generated by eye movements. In this paper, three surface electrodes are placed around the eye socket, and the biopotentials generated by eye movements are acquired using a commercial bioamplifier device. Next, the signals are sent to the computer to be digitally processed to extract the rate of saccades as well as the delay and deviation of the gaze in response to a stimulus. These features are analysed in a novel software application designed to help physicians in evaluating ataxia. After applying several tests to both healthy and ataxia-affected patients, differences in EOG results were found. The evaluation of the reliability of the designed software application is made according to three metrics: sensitivity, specificity, and accuracy. The results indicate the proposed system's viability as an affordable method for evaluation of ataxic disorders.

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