Natural language is a bit too complex for that I think.
There can't be any universal stimuli simply because there's multiple languages and cultures that don't all have the same response to stimuli.
There's a relationship between neural activity and writing system, for example [0].
Then there's stimuli that activate the language centre in some languages (e.g. click-sounds the Khoisan language families in Africa) but not in others. Some languages (especially East Asian languages like Vietnamese) also use tone to distinguish lexical or grammatical meaning, while Indo-European languages do not. which is another significant difference in (here: verbal) language processing.
All this leads me to conjecture that supernormal stimuli are highly unlikely in this context due to the high-level nature of the subject as well as the differences and the diversity in the involved regions of the brain.
There can't be any universal stimuli simply because there's multiple languages and cultures that don't all have the same response to stimuli.
There's a relationship between neural activity and writing system, for example [0].
Then there's stimuli that activate the language centre in some languages (e.g. click-sounds the Khoisan language families in Africa) but not in others. Some languages (especially East Asian languages like Vietnamese) also use tone to distinguish lexical or grammatical meaning, while Indo-European languages do not. which is another significant difference in (here: verbal) language processing.
All this leads me to conjecture that supernormal stimuli are highly unlikely in this context due to the high-level nature of the subject as well as the differences and the diversity in the involved regions of the brain.
[0] https://www.sciencedirect.com/science/article/abs/pii/S01680...