Antiquity, 2025. DOI: 10.15184/aqy.2025.37 (About DOIs).
This is your brain on Esperanto and Klingon
Worf, son of Mogh, is surprised by new fMRI study.
Credit:
Paramount+
J.R.R. Tolkien invented two Elvish languages (Quenya and Sindarin) when writing The Lord of the Rings trilogy. Star Trek has Klingon, the Avatar films have Na’vi, and Game of Thrones boasts two constructed languages, or conlangs: Dothraki and High Valyrian. There are even hardcore fans who have diligently become proficient in those invented languages. And apparently conlangs activate the same parts of the brain as their native tongues, according to a paper published in the Proceedings of the National Academy of Sciences.
MIT neuroscientist Evelina Fedorenko previously spearheaded studies on how the brain responds to stimuli that share certain language features—music, gestures, facial expressions, and computer programming languages like Python. None seemed to engage the language-processing areas of the brain. Curious about what makes natural language unique, Fedorenko et al. turned to conlangs. They organized a weekend conference featuring conlang creators as speakers and invited people fluent in Esperanto, Klingon, Na’vi, Dothraki, and High Valyrian to participate. They scanned 44 conlang speakers with fMRI as they listened to sentences in both their chosen conlang and their native tongue, performing nonlinguistic tasks as a control.
The results: The same language regions lit up regardless of whether they were speaking in their chosen conlang or native natural language. This helped the group determine that language responses appear to be driven in part by how they convey meaning about the interior and exterior world—objects, properties of objects, events, etc. Python, by contrast, is highly symbolic and abstract, disconnected from the everyday “real” world we experience. The group next plans to study how the brain responds to a different conlang called Lojban, created in the 1990s, to learn more about which language features activate the brain’s language centers.
