wow- what is the brain doing if there are no visual images....?
Good question!
Speaking as someone who seems to have a more mathematical-logical type brain, rather than a visual imagery type brain, I tend to think in terms of the functional features of objects, rather than their visual appearance. So I tend to notice what objects do, rather than what they look like.
So for example, if you take an electrical wire and a water pipe, these look fairly different visually.
But in terms of what they do, they share certain functional characteristics: they transport a substance from one point to another along their length (that substance being water or electrons), with the substance pushed along by a force (either water pressure or electrical voltage).
I think mathematical-logical thinkers tend to see and classify the world in terms of how the various elements of the world function and interact, rather than what they look like.
If I see something new, but it has functional features similar to something I already know about, I will get a feeling of "resonance" in my mind, as I observe that the functional features of one object nicely map onto the functional features of another object that I am already familiar with.
I could not remember the man's name but yes I remember reading the research many years ago. Sometimes I'll speak to someone at work who is basically your a typical scientist in the sense that there brain is wired one way. I come along with my creative mind and I often get a look of sheer horror or total confusion! Different minds haha. It certainly makes work..... interesting.
I think you can be a creative type in both the logical and visually artistic worlds. But they are different sorts of creativity.
Some scientists have little imagination, and just like the empirical facts. Other scientists like to use their imagination to create interesting theories. So usually the theorists have more imagination and creativity than the empiricists. Though science needs both types, because imaginative theories ultimately have to be tested against empirical facts.
But people can also be creative with visual imagery and design, and conjure up beautiful things. They can start with a blank canvas, and their visual ideas just flow from their mind, filling up the canvas.
I think we need more visual thinkers designing the world around us, to make it more beautiful.
I am not a fan of modern architecture, those nondescript glass and steel office buildings, new airports, new sports stadiums, etc, which look to my eye cold, clinical and logical. I think architects these days spend to much time designing buildings on CAD computer software, a logical process which I suspect kills their organic visual artistic creativity. It's hard to find a modern building which is warm and homely, and reflects human emotions or the human soul.