Massa, who drives for Scuderia Ferrari, was hurt in a high-speed crash during qualifying for the Hungarian Grand Prix. He spent nine days in the hospital recovering from a fractured skull that required emergency surgery.
He was struck by a spring that came off Rubens Barrichello's Brawn GP car. He also sustained an injury to his left eye and suffered a concussion.
"It is sort of a strange feeling," Massa said in his first public recounting of the horrific crash. "I know exactly what happened, that a spring came off Rubens' car and hit me on the helmet. I know that something happened to me, but I didn't feel anything when it happened.
"They told me that I lost consciousness at the moment of the spring's impact on my helmet and I ran into the barriers, then I woke up in hospital two days later. I don't remember anything, and that's what the doctors explained to me."
Massa says he intends to be back on the track as he makes a complete recovery.
Michael Schumacher is expected to drive for Ferrari in the European Grand Prix Aug. 23. Schumacher is a seven-time F1 champion who had retired after the 2006 season.