The Barcelona player lost his temper in Tuesday's qualification game against Ecuador and realises his behaviour was "embarrassing" and unacceptable
The Barcelona defender earned himself a straight red card in the 86th minute of the encounter after repeatedly kicking a stretcher-bearer in the back whilst he was taken to the sidelines for treatment.
"One must be big enough to admit it when you make a mistake. What happened is really embarrassing and it saddens me. I hope that my mistake does not tarnish the good image of the team," Mascherano told reporters.
"I was wrong and I apologise. I am generally not the kind of player to cause controversy and this is quite embarrassing.
"The stretcher was going too fast and I felt that I was about to fall off. I wanted to warn him, but my reaction cannot be justified."
Argentina sit atop of the table in South America with 26 points from 13 games, holding a three-point lead over Colombia, who have a game in hand.