Dualism vs Materialism or Mind vs Soul

[Neo-Scholastic]

As a general rule I have always leaned toward wanting to see something concrete, something that can be measured.

Perhaps we just do not know how to measure it or with what units. The influence of something like soul may not be like force or mass. It could express itself as a propensity, like anomalous statistical results. Or something else entirely.

Interesting, but sensation causes neural activity- would it not be physical in that sense?

We haven't yet developed a modern language for distinguishing non-physical types of cause and physical ones. Sorta like verb tenses for time travelers.