For example, did people hear their internal monologue in their chests if they thought the heart controlled thought? Sorry if this is overly complex!
Here's a very similar thread with answers you might find interesting.
Only tangentially related, but I asked a question in /r/AskAnthropology about emotions being associated with the heart, and got this excellent comment by /u/firedrops about the liver:
Here is a peer reviewed article that mentions that[1] "For example, in the Islamic world, the prophet Mohammed used the term “moist liver” to refer to the soul, while in modern Berber populations of North Africa, the depth of feelings is still vehicled through the expression “You are my liver”" The same article goes on to point out that other societies had similar ideas about the liver. For example, "In Shakespeare’s Much Ado About Nothing (1600 ca.), for example, Friar Francis points out that love – especially passionate love, whose rush cannot be easily controlled – resides in the human liver (“Then shall he mourne, If ever love had interest in his liver”) (IV.1.232–3)"