If there's nothing implemented on it, is it still a brain?

If you have a pattern of silicon that doesn't perform computations, is it still a chip?

Depending on how you answer that question, "You are an aspect of a homo sapiens brain" would work better.

In any case, we all seem to understand what we're talking about, and the difference in our definitions isn't something we're likely to come by, so they're both carving reality at it's joints.