WebMD
Web Md: Amyotrophic Lateral Sclerosis (Als)
This site is provided by WebMD Health and contains great information on Amyotrophic Lateral Sclerosis, otherwise known as Lou Gehrig's disease. It gives a brief topic overview, then discusses treatment, risks, causes and other places for...
Khan Academy
Khan Academy: Electromyography and Passive Filters: Circuitry in Action
Read a passage about electromyography and passive filters and answer the follow-up questions.