So like, I've heard about this for ages but I struggle understanding. I definitely cannot "see" anything when I close my eyes, I definitely cannot "see" anything in my mind/imagination. I can "picture" things but that picture is more or less an emotional feeling about the thing, I can imagine certain parts of it but it's more or less a conversation with myself about what I would see or experience about the thing, as if I were describing something that I'm feeling while blindfolded.
When they say visualize something in your head, do people actually see something as if they were looking at it? Else I just figured that visualizing meant more or less an analogy of how we make sense of the actual experience.
See, now that's the funny thing. I can totally listen to music in my head, vivid enough that I even unconsciously will start to bob my head or shoulders in time. I get goosebumps the same as I would for a song that's actually playing.