Image, notion or concept (4)
I believe the answer is:
idea
I believe this clue is a double definition.
'image' is the first definition.
(I've seen this before)
'notion or concept' is the second definition.
(I know that belief is a type of idea)
(Other definitions for idea that I've seen before include "Creative spark" , "a wheeze" , "Intention" , "Product of the mind" , "Notion, concept" .)