The effect of dominant hand and bimanual coordination task difficulty on the brainwave of cortical areas in right and left-handed persons

bimanual coordination tasks routine and dominant. So, the aim of this study was investigating the effect of handedness and bimanual coordination task difficulty on the brainwave of cortical areas.
Material:the present study is of semi-experimental type. 20 woman (10 left and 10 right-handed) with a mean age of 42þþ/8 years That were selected by Purposive sampling. Each of the participants did a five-difficulty level of bimanual coordination tasks.
according to the results of analysis of variance and independent t-test in c3 between right and left hand group there was a significant difference in gamma wave. And in level 5&4 of bimanual coordination task difficulty between tow group in delta waves there was a significant difference too.
There was a high activity in the motor cortex, supplementary motor area (C3 & C4) during bimanual coordination task. This activity of wave increasing with enhancement tasks difficulty. This finding shown the important role of Supplementary motor area in bimanual coordination.