ISSN 0869-6632 (Print)
ISSN 2542-1905 (Online)


For citation:

Selskii A. O., Emelyanova E. P., Drozhdeva E. E. Markers of patients’ condition after orthodontic treatment: application of recurrent analysis to EEG data obtained during cognitive tests. Izvestiya VUZ. Applied Nonlinear Dynamics, 2025, vol. 33, iss. 3, pp. 399-411. DOI: 10.18500/0869-6632-003159, EDN: NDICVN

This is an open access article distributed under the terms of Creative Commons Attribution 4.0 International License (CC-BY 4.0).
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Russian
Article type: 
Article
UDC: 
530.182
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Markers of patients’ condition after orthodontic treatment: application of recurrent analysis to EEG data obtained during cognitive tests

Autors: 
Selskii Anton Olegovich, Saratov State University
Emelyanova Elizaveta Petrovna, Saratov State University
Drozhdeva Evgeniya Evgenievna, Saratov State University
Abstract: 

The purpose of this study — is to study the differences in recurrent indicators based on electroencephalography signals of patients after orthodontic treatment during cognitive tests. Depending on the type of impact (installation of braces or aligners), identify markers in the canals, which can be used to further determine the strength of stress from orthodontic intervention for subsequent correction of treatment.

Methods. Recurrence analysis was used to study electroencephalography data. In particular, recurrent indicators were constructed for each channel of each patient.

Results. The channels in which changes in recurrent indicators with different types of orthodontic influence are the greatest are demonstrated. For these channels, the dynamics of recurrent indicators in them is described to highlight some markers of stress and pain experienced by the patient.

Conclusion. In the course of the study, recurrent indices were constructed based on the electroencephalography data of patients after orthodontic treatment. It was shown that the highest differences in patients of different groups were demonstrated by the temporal and occipital canals (O1, O2, T3, T4, T5, T6). Thus, the value of recurrent indices of this group of indices should be used as a marker of the patient’s condition.

Acknowledgments: 
The work was supported by the Russian Science Foundation, project No. 23-72-01021
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Received: 
12.09.2023
Accepted: 
20.12.2024
Available online: 
16.01.2025
Published: 
30.05.2025