Springfield, IL – A neurosurgeon says Illinois Senator Mark Kirk's prospects for a full physical recovery from a weekend stroke that's affected his left side "are not great." But his chances for a full mental recovery are good. Kirk underwent surgery Sunday to alleviate pressure on his brain after doctors discovered he had a tear in his carotid artery and had suffered the stroke. Doctors say the stroke affected Kirk's ability to move his left arm, possibly his left leg and could cause paralysis of his face. But he appears to recognize those around him and is responding to commands.