Are Logic and Reasoning Immaterial?

Questions about whether logic and reasoning aren’t immaterial because they’re activities of a physical brain and whether the fact that some people have a “blind mind’s eye” counters the claim that the mind’s ability to visualize images is evidence for the existence of a non-physical self.

* How would you respond to someone who claims logic and reasoning aren’t immaterial because they’re activities of a physical brain?

* Does the fact that some people have a “blind mind’s eye” (aphantasia) effectively counter the claim that the mind’s ability to visualize images is evidence for the existence of a non-physical self?