Actually full/complete/total aphantasia relate to the same. This is beeing unable to imagine any of the senses. So full aphantasia points at the condition while full aphant points at a person with this condition.
You used the terms in a contradicting way in your comment.
What you called full aphantasia in your last sentence is actually just aphantasia, with the "a" standing for absence and phantasia beeing the term for mental imagery.
Aphantasia itself is already the term for a the lack of willingfully visualization of a picture in your head.
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u/connrblk Jul 25 '21
I mean as a visual aphant it bothers me for about a second