Classifying Stress Mental State by using Power Spectral Density of Electroencephalography (EEG)

Adhi Dharma Wibawa, Ulfi Widya Astuti, Nophaz Hanggara Saputra, Arbintoro Mas, Yuri Pamungkas

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Citations (Scopus)

Abstract

Police are one of the jobs that have a heavy workload. Police are more susceptible to stress as a result. Currently, the Indonesian National Police evaluates the mental health of police officers using a questionnaire. However, this questionnaire is very prone to subjectivity bias. Electroencephalography (EEG) was studied as another method for detecting stress in humans. Participants were selected through questionnaire results, labeled, and categorized into stressed and normal. Eighteen participants were involved in this experiment. They are nine normal subjects and nine stressed subjects. The EEG data was recorded on two channels, F3 and F4. Those channels are located in the prefrontal cortex and have been recognized as channels for exploring the stress mental state. Python was used to perform EEG preprocessing, including bandstop filtering, artifact and noise removal, and ICA filtering. The cleaned EEG signal is then decomposed into Alpha, Beta, and Gamma sub-bands. Power Spectral Density (PSD) is then calculated as the feature for classifying between the two classes, the normal and stress mental state. K-Nearest Neighbor (K-NN) and Support Vector Machine (SVM) were applied to obtain accuracy. K-NN and SVM produce an accuracy of 90.8% and 74.5% consecutively.

Original languageEnglish
Title of host publicationICITEE 2022 - Proceedings of the 14th International Conference on Information Technology and Electrical Engineering
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages235-240
Number of pages6
ISBN (Electronic)9781665460774
DOIs
Publication statusPublished - 2022
Event14th International Conference on Information Technology and Electrical Engineering, ICITEE 2022 - Yogyakarta, Indonesia
Duration: 18 Oct 202219 Oct 2022

Publication series

NameICITEE 2022 - Proceedings of the 14th International Conference on Information Technology and Electrical Engineering

Conference

Conference14th International Conference on Information Technology and Electrical Engineering, ICITEE 2022
Country/TerritoryIndonesia
CityYogyakarta
Period18/10/2219/10/22

Keywords

  • EEG analysis in frequency domain
  • K-NN
  • Keywords-Stress detection using EEG analysis
  • Police stress mental state
  • Power Spectral Density
  • SVM

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