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Human state anxiety classification framework using EEG signals in response to exposure therapy

Human anxiety is a grave mental health concern that needs to be addressed in the appropriate manner in order to develop a healthy society. In this study, an objective human anxiety assessment framework is developed by using physiological signals of electroencephalography (EEG) and recorded in respon...

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Autores principales: Muhammad, Farah, Al-Ahmadi, Saad
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8932601/
https://www.ncbi.nlm.nih.gov/pubmed/35303027
http://dx.doi.org/10.1371/journal.pone.0265679
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author Muhammad, Farah
Al-Ahmadi, Saad
author_facet Muhammad, Farah
Al-Ahmadi, Saad
author_sort Muhammad, Farah
collection PubMed
description Human anxiety is a grave mental health concern that needs to be addressed in the appropriate manner in order to develop a healthy society. In this study, an objective human anxiety assessment framework is developed by using physiological signals of electroencephalography (EEG) and recorded in response to exposure therapy. The EEG signals of twenty-three subjects from an existing database called “A Database for Anxious States which is based on a Psychological Stimulation (DASPS)” are used for anxiety quantification into two and four levels. The EEG signals are pre-processed using appropriate noise filtering techniques to remove unwanted ocular and muscular artifacts. Channel selection is performed to select the significantly different electrodes using statistical analysis techniques for binary and four-level classification of human anxiety, respectively. Features are extracted from the data of selected EEG channels in the frequency domain. Frequency band selection is applied to select the appropriate combination of EEG frequency bands, which in this study are theta and beta bands. Feature selection is applied to the features of the selected EEG frequency bands. Finally, the selected subset of features from the appropriate frequency bands of the statistically significant EEG channels were classified using multiple machine learning algorithms. An accuracy of 94.90% and 92.74% is attained for two and four-level anxiety classification using a random forest classifier with 9 and 10 features, respectively. The proposed state anxiety classification framework outperforms the existing anxiety detection framework in terms of accuracy with a smaller number of features which reduces the computational complexity of the algorithm.
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spelling pubmed-89326012022-03-19 Human state anxiety classification framework using EEG signals in response to exposure therapy Muhammad, Farah Al-Ahmadi, Saad PLoS One Research Article Human anxiety is a grave mental health concern that needs to be addressed in the appropriate manner in order to develop a healthy society. In this study, an objective human anxiety assessment framework is developed by using physiological signals of electroencephalography (EEG) and recorded in response to exposure therapy. The EEG signals of twenty-three subjects from an existing database called “A Database for Anxious States which is based on a Psychological Stimulation (DASPS)” are used for anxiety quantification into two and four levels. The EEG signals are pre-processed using appropriate noise filtering techniques to remove unwanted ocular and muscular artifacts. Channel selection is performed to select the significantly different electrodes using statistical analysis techniques for binary and four-level classification of human anxiety, respectively. Features are extracted from the data of selected EEG channels in the frequency domain. Frequency band selection is applied to select the appropriate combination of EEG frequency bands, which in this study are theta and beta bands. Feature selection is applied to the features of the selected EEG frequency bands. Finally, the selected subset of features from the appropriate frequency bands of the statistically significant EEG channels were classified using multiple machine learning algorithms. An accuracy of 94.90% and 92.74% is attained for two and four-level anxiety classification using a random forest classifier with 9 and 10 features, respectively. The proposed state anxiety classification framework outperforms the existing anxiety detection framework in terms of accuracy with a smaller number of features which reduces the computational complexity of the algorithm. Public Library of Science 2022-03-18 /pmc/articles/PMC8932601/ /pubmed/35303027 http://dx.doi.org/10.1371/journal.pone.0265679 Text en © 2022 Muhammad, Al-Ahmadi https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Muhammad, Farah
Al-Ahmadi, Saad
Human state anxiety classification framework using EEG signals in response to exposure therapy
title Human state anxiety classification framework using EEG signals in response to exposure therapy
title_full Human state anxiety classification framework using EEG signals in response to exposure therapy
title_fullStr Human state anxiety classification framework using EEG signals in response to exposure therapy
title_full_unstemmed Human state anxiety classification framework using EEG signals in response to exposure therapy
title_short Human state anxiety classification framework using EEG signals in response to exposure therapy
title_sort human state anxiety classification framework using eeg signals in response to exposure therapy
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8932601/
https://www.ncbi.nlm.nih.gov/pubmed/35303027
http://dx.doi.org/10.1371/journal.pone.0265679
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