memory paper

What Happens When You Remove the Hippocampus ? 

http://ed.ted.com/lessons/what-happens-when-you-remove-the-hippocampus-sam-kean

Please answer the following questions (remember to use paragraphs and correct grammar, this is to be written as a paper):

1. Why did HM have surgery?

2. How did the surgery affect HM's short term memory? How did it affect his long term memory?

3. What did the star task demonstrate?

4. What did this animation tell us about the hippocampus?