There's a decent amount of work that's been done already in this area, see [1] and follow up work by the same authors for a good example. While the approach is "cool" there are still many unanswered questions of what exactly it tells us about the brain. See [2], a critical review of [1], for an indication of what I mean.

- [1] http://www.jneurosci.org/content/35/27/10005 - [2] http://www.jneurosci.org/content/35/48/15769