Relating to the mind once it changes (6)

I believe the answer is:

noetic

I'm a little stuck... Click here to teach me more about this clue!

'relating to the mind' is the definition.
I can't judge whether this defines the answer.

'once it changes' is the wordplay.
'changes' indicates an anagram.
'once'+'it'='onceit'
'onceit' anagrammed gives 'NOETIC'.

Can you help me to learn more?

(Other definitions for noetic that I've seen before include "Intellectual" , "Of a mind" , "Relating to the intellect" .)

I've seen this clue in the Sydney Morning Herald.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.