When is different not different?

[gaijinalways]

The significant part of Prof. Tsunoda's discovery is that the Japanese pattern of hearing nature sounds in the language sphere is not a matter of ancestry, but rather dependent on whether Japanese was the first language learned.

Diceke, good point. But then any brain could learn this, as anyone could learn japanese as a first language. It would just be more likely to be a person with Japanese parents!

How about a Japanese-as-first-language brain?