What does crossing the midline really mean?

There are many terms that teachers, psychologists and other professionals may use that, at times, are perhaps not explained effectively leaving parents at a loss to the significance of these difficulties. It is important to understand what the importance of these conditions are, (especially if they have been mentioned in your child’s school report) what they mean, and the possible consequences and repercussions thereof.

The midline is akin to an imaginary line going down the middle of one’s body from head to toe. Midline crossing is important for many skills to develop later on. For example, midline crossing is important for a youngster to develop the ability to use one hand to write across the entire page. This will also determine whether the youngster will have the necessary skills to read the length of the sentence across the page from left to right A child who can’t cross the midline, for instance, would use his/her left hand to write or paint on the left-side of the page and his/her right hand to write or paint on the right-hand side of the page which can hamper the learning process.

Crossing the midline is also an indicator of bilateral co-ordination which is the ability to use both sides of the body and brain simultaneously. This is important for gross motor skills such as climbing stairs, walking, riding a bicycle and swimming. In addition, bilateral co-ordination is also important to read, write and learn. In other words, the right and left brain have to work together, for example in reading the left brain’s task is to decode a word whilst the right brain facilitates the understanding and meaning of what was read.

Midline crossing is therefore essential for a youngster to develop as it is a very necessary skill for learning in all areas of life.