University of Twente Student Theses
Measuring vigilant attention : predictive power of EEG derived measures on reaction time, subjective state and task performance
Klein Douwel, F.K.W. (2016) Measuring vigilant attention : predictive power of EEG derived measures on reaction time, subjective state and task performance.
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| Abstract: | EEG is considered a promising and sensitive measure of sustained attention. Commonly used EEG analysis methods are Event Related Potentials (ERP), Fast Fourier Transformation (FFT) and Event-Related De-synchronization (ERD). The current study examined which of these methods yielded the most useful EEG derived measure for predicting reaction time, subjective state and task performance. It was expected that ERD would yield the most sensitive measure because it takes both the time and frequency domain into account. Participants performed a monotonous visual discrimination task and were instructed to respond only to infrequent target stimuli. During the task EEG was recorded, the level of drowsiness was scored subjectively and the behavioral responses to the target- and non-target stimuli were registered. Different EEG measures were derived from the same signals by performing FFT, ERP and ERD analysis. Separate regression analyses were performed for each EEG method as predictor of subjective scores, reaction time and task performance. The EEG derived measures were statistically compared by using information criteria. It was found that FFT Alpha band located at parietal sites proved to be the most informative predictor for task performance and reaction time. For subjective state, ERP, located at the occipital site was the most informative predictor. Based on the results from this study, it could not be confirmed that ERD yielded the most predictive EEG measure. |
| Item Type: | Essay (Master) |
| Faculty: | BMS: Behavioural, Management and Social Sciences |
| Subject: | 77 psychology |
| Programme: | Psychology MSc (66604) |
| Link to this item: | https://purl.utwente.nl/essays/69145 |
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