Explain why the consistency and reproducibility of the trigger-hallucination relationship matters when identifying a reflex hallucination.

A hallucination that merely happens to occur near a particular stimulus on one occasion could easily be coincidental, with no genuine causal link between the trigger and the experience. What defines a reflex hallucination specifically is that the relationship between a real stimulus in one sense and the resulting hallucination in a different sense is consistent and reproducible for that person, occurring reliably each time the trigger is present. This reproducibility is what allows a reflex hallucination to be distinguished from a coincidental hallucination that merely happens to occur near a stimulus without a reliable link, and is also part of what separates it from the sometimes looser, more variable associations described in some other perceptual phenomena. Establishing this reliable pattern, rather than relying on a single reported instance, is therefore central to correctly identifying the phenomenon.