The German motor racing star, who turned 49 today, has been fighting for his life after a horrific skiing accident in the French Alps four years ago when he suffered catastrophic head injuries after hitting his head on a rock.
His family has closely guarded his privacy and released very little information on any possible recovery.
His condition is currently unknown, but it is believed he is being rehabilitated at his family home in Switzerland.
Professor Mark Obermann, Director of the Centre for Neurology at the Asklepios clinic in Seesen, Germany has given hope to Mr Schumacher fans, saying “they shouldn’t [give up hope]”.
GettyMichael Schumacher (L) puts on a helmet during practice ahead of the Race of Champions in 2012
Highlighting a new study he said there were good results for patients in a persistent vegetative state.
Prof Obermann said: “According to a Swedish study, between 30 and 40 percent of patients have regained consciousness within four years.”
Although he added that did not mean the patient will make a full recovery, he said: “Many can come back to life and see how their children and grandchildren grow up, what plans they have or what else happens in the family or in the circle of friends.”
He also emphasised the importance of Michael Schumacher's family love and care which played an important part