Right. It might be a little bit more correct to speak of 'temporal arrangements of arrangements of particles', for which 'processes' is a much less awkward shorthand.

But saying "pleasure is a neurological process" seems consistent with saying "it all boils down to physical stuff- e.g., particles, eventually", and doesn't seem to necessarily imply that "you can't find a 'pleasure pattern' that's fully generalized. The information is always contextual."