"Michael's sedation is being reduced in order to allow the start of the waking up process which may take a long time," Schumacher's manager Sabine Kehm said in a statement.
He has been in a coma at a specialist clinic in Grenoble since he hit his head during the accident in the French Alps more than a month ago, the Guardian reported.
Schumacher had responded positively to neurological tests that were conducted on Monday, French newspaper L'Equipe said.
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UPI Sports Results for September 19, 2014