The phrase "a heightened form" is correct and usable in written English.
It can be used to describe an intensified or more developed version of something, often in artistic or emotional contexts.
Example: "The artist's latest work is a heightened form of expression that captures the complexities of human emotion."
Alternatives: "an intensified version" or "an elevated form".
He initially pursued this aim with a heightened form of ideological dogmatism.
Poetry when performed — it's sort of like a heightened form of speech that is performative and is rhythmic.
As would be portrayed, in a heightened form, in The Butcher Boy, home life in the McCabe household could be less than tranquil.
In optimistic moments, she tried to convince herself that she suffered from no more than a heightened form of squeamishness that was bound to pass.
In the 1960s and 1970s, Ashton and MacMillan created for the dancer Anthony Dowell a heightened form of male lyricism that has never been surpassed.
As with all soaps, PCBH offered a heightened form of reality – there were an astonishing number of murders and sieges, but there was nothing much on screen that didn't really go on inside.
The grieving mothers, betrayed wives and reluctant courtesans she incarnated were confronting -- in a melodramatically heightened form -- the hypocrisies of a social system that subjugated women by idealizing them.
And for me, "The Hour" has a slightly heightened form, and the characters came out of that.
Despite the fact that I've been going through my own depression, I felt that I was being exposed to a more heightened form of it.
Globalization is not an unfamiliar word to people, which is coined to describe the "heightened form of time/space compression" and the "inevitable" competition among the territories and countries in the world (Maguire 2002).
Finally, after a period of seeming retirement, Verdi produced "Otello" and "Falstaff," in which the bel-canto tradition was recast in dizzyingly heightened form.
