`  == Not a hallucinogen? ==  This article states some effects of LSD use such as: `` an experience of radiant colors, objects and surfaces appearing to ripple or ``breathe,`` colored patterns behind the eyes``, and then states that LSD is not truly a hallucinogen. Webster defines hallucinogen as a substance which brings about hallucinations when ingested, and defines hallucination as ``a perception of objects with no reality usually arising from disorder of the nervous system or in response to drugs (as LSD)`` quoted exactly. So yeah, I really think that going as far to say LSD isn't really a hallucinogen is stretching the definition of the word, considering that colors behind the eyes and surfaces moving around are actually hallucinations. Someone should edit these claims out of the article  `