How does this play for you ? I identify as spectrum, what used to be Asperger’s, and have to work really hard to get to visual phantasia, but I can. Also worked hard to remove aural phantasia? via meditation because of negative self talk. Do you see ‘aphant’ as a useful designation? Thoughts, Ideas?
Look into meditation (extending silence of mind), it won’t work immediately, but it did for me, on the order of years, but worth it, much peace found.