It’s almost as if imagination is the wrong word for itself. Imagining goes beyond conjuring up images displayed on the LCD screen of our minds. Imagination is thinking about patterns of behavior, which we can’t help but imitate because that’s what we do. And what we do builds up who we are, who we become.
Consider people who don’t want to think about something. “Let’s change the subject, I don’t want to think about that.” If there were no felt effects of thinking about something disagreeable, there would be no trouble. We’d think about disagreeable stuff all day. But we don’t do that because imagining particular things makes us feel that particular way. We laugh to ourselves (that’s action) when something funny crosses our minds (that’s imagination).
So, is it right to say that imagination carries a physiological aspect? That what we think produces action and feeling? I think the answer is an obvious yes.