HM

Question 1

why HM had brain damage

Answer 1

• Had epilepsy from a young age, following an accident
• Had this hippocampus removed bilaterally (on both sides of the brain)

Question 2

what type of memory could he no longer make

Answer 2

He couldn’t make new LTM (episodic or semantic)- Hippocampus is for making
new long-term memories
* Could access old LTM- LTM stored other places in the brain than the
Hippocampus

Question 3

what memories could he make

Answer 3

• Could still use STM e.g., keeping things in mind through maintenance rehearsal
  – this suggests that STM and LTM are separate systems
• Could make procedural memories e.g., mirror drawing task- This suggests that
  there are different types of LTM