I read it as saying they actually got topographical line-like structures in the MRI, similarly to the well established result that there are typographically-arr

I read it as saying they actually got topographical line-like structures in the MRI, similarly to the well established result that there are typographically-arranged visual neurons that essentially light up like pixels in response to a scene. So if that’s right then they are actually measuring a spatial encoding. Anyway, it’s just the abstract so I could be completely wrong.