The EEG room used in the experimentation was partially sound- attenuated and each participant was briefed on the procedure. Then each participant attempted the RAPM test, which lasted 40 minutes. After the RAPM test, an EEG cap was set along with the PIB device (for ECG recording), which was followed by watching the stereoscopic 3D videos (2D group watched the videos in 2D mode and S3D group watched in 3D mode). The total duration of watching videos was 30 minutes. At the end of this session, participants performed the oddball task, which took approximately four minutes. For display, a 42-inch TV was used, placed at a distance of 1.5 m from the participant’s sitting position. EEG signals were recorded during the learning session as well as during the oddball task using an EGI 128-channel net. The sampling rate was 250 points per second and the impedance of all the electrodes was kept below 50 k^ (recommended by manufacturer) and referenced to the central electrode position Cz. ECG signals were recorded using the EGI Polygraphic Input Box (PIB). The FP1/FP2 electrodes were used to detect and extract the eye blinks from EEG recordings.