The Meaning of Freedom. Columbia historian Eric Foner traces the shifting definition of American liberty in USCâs sixth annual Law and Humanities Distinguished Lecture. November 1, 2007. When it comes to freedom in America, thereâs no single lasting definition, according to world-renowned historian Eric Foner.
The first symptoms of myasthenia gravis may be: 1  Weakness of the eye muscles. 2  Difficulty in swallowing. 3  Slurred speech.
Myasthenia gravis causes weakness of the voluntary muscles. Voluntary muscles are those that are under your control. Autonomic muscles, such as the heart and the digestive tract, are usually not affected. The muscle weakness of myasthenia gravis worsens with activity and improves with rest. The muscle weakness can lead to a variety of symptoms, including: 1  Breathing difficulty because of weakness of the chest wall muscles.  Chewing or swallowing difficulty, causing frequent gagging, choking, or drooling.