Sensors, Vol. 21, Pages 5043: A Review on Mental Stress Assessment Methods Using EEG Signals

Sensors, Vol. 21, Pages 5043: A Review on Mental Stress Assessment Methods Using EEG Signals Sensors doi: 10.3390/s21155043 Authors: Rateb Katmah Fares Al-Shargie Usman Tariq Fabio Babiloni Fadwa Al-Mughairbi Hasan Al-Nashash Mental stress is one of the serious factors that lead to many health problems. Scientists and physicians have developed various tools to assess the level of mental stress in its early stages. Several neuroimaging tools have been proposed in the literature to assess mental stress in the workplace. Electroencephalogram (EEG) signal is one important candidate because it contains rich information about mental states and condition. In this paper, we review the existing EEG signal analysis methods on the assessment of mental stress. The review highlights the critical differences between the research findings and argues that variations of the data analysis methods contribute to several contradictory results. The variations in results could be due to various factors including lack of standardized protocol, the brain region of interest, stressor type, experiment duration, proper EEG processing, feature extraction mechanism, and type of classifier. Therefore, the significant part related to mental stress recognition is choosing the most appropriate features. In particular, a complex and diverse range of EEG features, including time-varying, functional, and dynamic brain connections, requires integration of various methods to understand their asso...
Source: Sensors - Category: Biotechnology Authors: Tags: Review Source Type: research