Neuroscience Engagement: The Influences of Chemistry Education on Affective Dimensions - Affective Dimensions in Chemistry Education - page 231

Fig. 2 Example of EEG raw data
around the eyes when they read the tasks on the computer screen or when they
blink. Hence, the HEOR, HEOL, VEOU, and VEOL would be the adjustment data
to remove the artifact data which occurs as a result of blinking or muscle vibration,
to correct the EEG raw data. The other EEG raw data shown as serial symbols and
numbers in Fig. 2 , such as C3, CZ, and C4, correspond with the different brain areas
shown in Fig. 3 .
In Fig. 3 , there are assigned symbols and numbers in each EEG signal, which
indicate the electrode site in the electrode cap. These symbols and numbers
follow the 10-20 international systems, where the symbols indicate the brain
area and the numbers reflect whether the induced EEG signals are in the left or
the right brain hemisphere. For example, the symbol “F” is located in the frontal
lobe of the brain area, the odd numbers (1, 3, 5, 7) are located in the left brain
hemisphere, and the even numbers (2, 4, 6, 8) are located in the right brain
hemisphere.
After collecting the EEG raw data, the parameters of the EEG data analysis need
to be set, such as the frequency ranges of the filter, the electrical resistance of