1. Baraka loves to dance. However, he and his friends notice that he misses easy steps more and more often. In fact, Baraka almost seems intoxicated because his coordination is so badly affected. Baraka's physicians tell him that he has a myelin disorder. How would such a disorder cause Baraka's symptoms? Name a specific myelin disorder and explain how this disease causes similar problems. 

2. Matt has just returned home from his doctor's office. He has a kidney infection and his doctor has prescribed medication for it. Matt was concerned that he might not be able to drive while taking the medication, but his doctor reassured him that it would not "affect his brain." What did the doctor mean by that remark? Can you offer a more complete explanation?