A number of brain and cognition links have been showing up lately. The one you've probably already seen by now is the New Scientist story on the world's first brain prothesis, an artificial hippocampus implemented on silicon and installed in a rat. Next is a story from NYU researchers suggesting that many visual misperceptions and hallucinations are created in the lowest-level visual processing circuitry of the human brain rather than at higher, congnitive levels as previously believed. And last, a short paper (PDF format) by an AI researcher in Brussels that brings into question exactly what sorts of machines can be called "cognitive"