EEG alpha oscillation: Handwriting behavior toward working memory performance of normal children using correlation analysis

This study is mainly focused on the Electroencephalography (EEG) of alpha oscillation of normal children´s handwriting behaviour and its correlation towards working memory performance. The assessment was presented to five left-handed and five right-handed children who have no records of working memory disability. The EEG signals are recorded using Neurofax-EEG 9200 (taken at channel F7, C3, F4, F8, and C4) during two assessments: Task 1 and Task 2. Raw EEG data is analysed using Discrete Wavelet Transform (DWT) which decomposes signals into different frequency bands. Correlation analysis and T-test are used to statistically identify significant interaction which occurs. The voltage activity mean value for Task 1 is 9.664 μV while Task 2 is 5.666 μV. Results showed that there is no significant difference between the working memory average means of left and right handed children. Besides that, there is no significant sensory motor performance difference between the average means of left and right handed children when carrying out the assessments. In conclusion, this study proposed that handwriting behaviour (right-handed and left-handed) does not affect the memory performance of normal children.