At least according to that paper from ten years ago : http://www.nature.com/neuro/journal/v8/n7/abs/nn1488.html
Maybe is there more recent researches in that field.
At least according to that paper from ten years ago : http://www.nature.com/neuro/journal/v8/n7/abs/nn1488.html
Maybe is there more recent researches in that field.