I'm new to neuroscience and this forum and was hoping to get some help from people who know about this topic. Hope this is the right place for it. Apologies if not.

A friend of mine has a paper published earlier this year about some stuff he's working on with MRIs and PTSD. The link to the paper is below:


I'd like some help with understanding what this is about. My friend explained it to me but he lost me and I'm too embarrassed to ask him to explain it again.

Whatever help you can provide would be very much appreciated. Thanks!