The assessment on the ability of brain-computer interfaces (BCIs) to acquire electroencephalographic (EEG) data in situations of luminous glare is presented. Dazzling is typically a temporary deleterious effect on the ability to see or concentrate due to glare. The potential of BCIs was evaluated by defining a set of strategies involving the illumination process, EEG signal recording and analysis. N-back, a continuous performance task commonly used in cognitive neuroscience was used to test the attention under the effect of dazzling, in parallel with EEG signals acquisition. Statistical data analysis allowed to show the potential of this technique.
In several domains, we found increasing demands to assess cognitive workload and fatigue. This article presents part of the work produced towards the implementation of an integrated system composed of an Electroencephalography (EEG) device and an eye-tracker, focusing on the optical devices. Pupil dilation was found to be related to task difficulty and cognitive workload, where dilation of the pupils indicate greater mental workload. This and other optical parameter can act not only as complement to the EEG system but also as a cross-validation tool. Lenses adjustments and calibration process of the eye-tracker are discussed along with preliminary results from pre-test of the experiment protocol.