The text is a review or analysis of some researcher/author (not Freud).
I'd paraphrase this review or extract in this way ...
It's not easy reading, so the paraphrasing may be as difficult to follow !
The author believes some people develop anxiety from interacting with or facing certain objects or experiences, and this anxiety gives rise to disorientation. In general, it is this disorientation (not the objects or experiences themselves), that gives rise to 'the experience of the uncanny'. But, the writer - similar to Freud's writings - does qualify this and gives examples where it is possible the actual objects/experiences may trigger 'the experience of the uncanny'.