PMID- 36726417 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20230203 IS - 2228-7477 (Print) IS - 2228-7477 (Electronic) IS - 2228-7477 (Linking) VI - 12 IP - 4 DP - 2022 Oct-Dec TI - An Efficient Approach for Driver Drowsiness Detection at Moderate Drowsiness Level Based on Electroencephalography Signal and Vehicle Dynamics Data. PG - 294-305 LID - 10.4103/jmss.jmss_124_21 [doi] AB - BACKGROUND: Drowsy driving is one of the leading causes of severe accidents worldwide. In this study, an analyzing method based on drowsiness level proposed to detect drowsiness through electroencephalography (EEG) measurements and vehicle dynamics data. METHODS: A driving simulator was used to collect brain data in the alert and drowsy states. The tests were conducted on 19 healthy men. Brain signals from the parietal, occipital, and central parts were recorded. Observer Ratings of Drowsiness (ORD) were used for the drowsiness stages assessment. This study used an innovative method, analyzing drowsiness EEG data were in respect to ORD instead of time. Thirteen features of EEG signal were extracted, then through Neighborhood Component Analysis, a feature selection method, 5 features including mean, standard deviation, kurtosis, energy, and entropy are selected. Six classification methods including K-nearest neighbors (KNN), Regression Tree, Classification Tree, Naive Bayes, Support vector machines Regression, and Ensemble Regression are employed. Besides, the lateral position and steering angle as a vehicle dynamic data were used to detect drowsiness, and the results were compared with classification result based on EEG data. RESULTS: According to the results of classifying EEG data, classification tree and ensemble regression classifiers detected over 87.55% and 87.48% of drowsiness at the moderate level, respectively. Furthermore, the classification results demonstrate that if only the single-channel P4 is used, higher performance can achieve than using data of all the channels (C3, C4, P3, P4, O1, O2). Classification tree classifier and regression classifiers showed 91.31% and 91.12% performance with data from single-channel P4. The best classification results based on vehicle dynamic data were 75.11 through KNN classifier. CONCLUSION: According to this study, driver drowsiness could be detected at the moderate drowsiness level based on features extracted from a single-channel P4 data. CI - Copyright: (c) 2022 Journal of Medical Signals & Sensors. FAU - Houshmand, Sara AU - Houshmand S AD - Department of Mechanical Engineering, KN. Toosi University of Technology, Tehran, Iran. FAU - Kazemi, Reza AU - Kazemi R AD - Department of Mechanical Engineering, KN. Toosi University of Technology, Tehran, Iran. FAU - Salmanzadeh, Hamed AU - Salmanzadeh H AD - Department of Industrial Engineering, KN. Toosi University of Technology, Tehran, Iran. LA - eng PT - Journal Article DEP - 20221110 PL - India TA - J Med Signals Sens JT - Journal of medical signals and sensors JID - 101577416 PMC - PMC9885505 OTO - NOTNLM OT - Driving simulator OT - drowsy driving OT - electroencephalography signal OT - feature extraction OT - signal classification OT - supervised learning methods OT - vehicle dynamics COIS- There are no conflicts of interest. EDAT- 2023/02/03 06:00 MHDA- 2023/02/03 06:01 PMCR- 2022/11/10 CRDT- 2023/02/02 01:55 PHST- 2021/05/23 00:00 [received] PHST- 2021/08/25 00:00 [revised] PHST- 2021/10/28 00:00 [accepted] PHST- 2023/02/02 01:55 [entrez] PHST- 2023/02/03 06:00 [pubmed] PHST- 2023/02/03 06:01 [medline] PHST- 2022/11/10 00:00 [pmc-release] AID - JMSS-12-294 [pii] AID - 10.4103/jmss.jmss_124_21 [doi] PST - epublish SO - J Med Signals Sens. 2022 Nov 10;12(4):294-305. doi: 10.4103/jmss.jmss_124_21. eCollection 2022 Oct-Dec.