The term 'placebo effect' itself annoys me, it was the 'hard science' peoples way of condescendingly dismissing the mind/body connection. 
i've been interested in neuroscience and psychology since my teen years, and have watched the paradigms shift, ever so slowly. If you have Amazon Prime Video you might want to watch 'The Brain That Heals Itself' narrated by the author of book it is based with same title.  His name is Norman Doidge, MD.  DD got me the Book for my birthday and i'm reading segments at a time, because they don't have to be read in order they appear. The chapter on applications to pain management has further supported things i learned in my meditation group i belonged to in the late 70's.
You also might want to check out Mayim Bialik's Breakdown website and podcast series which is viewable on YouTube. (i subscribed and am catching up. It will take a while because i like to sort of process info before moving on. (Both with non-fiction books and science shows.) While much of it is about psychology, with Bialik having a neuroscience degree, she often cites studies that shed light on the things being discussed that day.
https://www.bialikbreakdown.com/about