Let's remember philosophy started as questions about the cosmos, the stars. Very much physical reality. And practical too, for agriculture and navigation. How do we get from A to B and acquire food and other goods. Over about 5000 years it's come to be "relegated to the unreal", disparaged by radical positivists who seem unable to make connections between areas (ironic from a neural POV).
A 'modern' philosopher I'll suggest here on "representation of space-time" is Harrold Innes [0]. For those who are patient readers and literate in economics, anthropology, linguistics and computer science (and working on any field of AI relating language to space) I'd hope it would be a trove of ideas about how our brains developed over the ages to handle "space and time".
Some will be mystified how study of railways, maps and fish trading has anything to do with cognitive neuroscience and representing space. But it has everything to do with it, because we encode the things that matter to our survival and those things shape how our brains are structured. Only very recent modernity and anti-polymath, hyper-specialisation has made us forget this way that the stars, the soil and our brains are connected.