It is said: beware of words that are "explain alls".
Like "cure-alls" that are supposed to cure everything; but cure nothing; "explain-alls" are supposed to explain everything; but explain nothing. "Hallucination" is a popular "explain all".
There are two contradictory uses of 'hallucination';
(1) having an experience and being MISTAKEN about it (eg. hearing music and thinking it's a live band when it's a stereo out of sight.)
(2) having an experience and being CORRECT about it (eg. hearing music and KNOWING its a sense-data reconstruction by one's brain (so correctly identifying what it is.)
An accompanying condition of something (alleged increase amplitude) may not be a cause, it may be an effect, or a corresponding feature.
It in no way proves that the 'vision' wasn't genuine.
The claim "that someone is mistaken about their experience" is a moral judgement. Any related action is moral or political.
Beware the error of reductionism.
A true 'vision' may well be accompanied by corresponding features in 3D space.
Imagine you were a 'flat-lander' living in 2D space. If a sphere from 3D space passed through your world, you would see it as a cross-section, as a circle. (See "Hyperspace" by Michio Kaku").
Physicists have found at least 10 dimensions are likely. But it's not necessarily the extra 6 that are curled up; WE may be curled up in our extra 6 dimensions so we don't see them around us. Occasionally people might uncurl themselves enough to notice other-dimensional object's cross-sections in our 3D world. Or they may access other worlds via their internal curled up 10D space.