Complex sentence: The left hemisphere plays a more prominent role for right handers and is involved in symbolic functions in language and maths.Whereas the right hemisphere plays a more prominent role for left handers and is specialised to carry out images and understanding of maps i.e.spatial relationships.
Split into simpler sentences: The left hemisphere plays a more prominent role for right handers and is involved in symbolic functions in language and maths. Meanwhile, the right hemisphere plays a more prominent role for left handers and is specialised to carry out images and understanding of maps i.e.spatial relationships.