Glia (Greek,"glue") cells are the neuroglia or the non-nervous or supporting tissue of the brain and the spinal cord.

Neuroglia acts as connective or supporting tissue and also plays an important role in the reaction of the nervous system to injury or infection.

"In the study of brain cells, neurons have always hogged the limelight, even though glial cells make up 90 per cent of the brain."

This is considered the origin of the myth that people only use ten per cent of their brains because for a long time, glial cells were thought to serve as little more than a cushioning to hold the brain together; however, scientists are beginning to realize that glial cells could very well underlie our dreams and imagination.

Such cells, could even hold the key to curing diseases like Alzheimer's and Parkinson's because glial cells are now known to be involved with both cell regeneration and cell death in the brain.

It is obvious that no matter what scientists uncover, or discover, the brain is a far more complicated structure than the neural lightning storm it was once thought to be.