How to enhance or suppress memories

Stimulating different parts of the brain can dial up or down a specific memory's emotional oomph, study shows.

Summary:

Memories are pliable if you know which regions of the brain's hippocampus to stimulate -- a finding that could someday enable personalized treatment for people with PTSD, depression and anxiety 

What if scientists could manipulate your brain so that a traumatic memory lost its emotional power over your psyche? Steve Ramirez, a Boston University neuroscientist fascinated by memory, believes that a small structure in the brain could hold the keys to future therapeutic techniques for treating depression, anxiety, and PTSD, someday allowing clinicians to enhance positive memories or suppress negative ones