Before We Had a Basic Concept Of Human Anatomy, Did We Use To Think That “Thought” Came From Our Heads?
[deleted-user] No. According to my psych book, across history, different cultures have thought that the “mind” existed in the liver or the heart. I would say that yes it is just placebo (to your 2nd question). I have no idea why we think love comes from the heart, maybe someone else can help?
Where do we find this stuff? Here are our sources:
https://www.spine-health.com/conditions/neck-pain/what-causing-my-neck-pain-and-headache
sciencesensei.com/the-human-heart-explained-so-that-even-a-5-year-old-can-understand
healthline.com/health/situs-inversus
ncbi.nlm.nih.gov/pmc/articles/PMC3926130