The award of 1 million euros is shared with Prof Tamás Freund and Prof György Buzsáki for their "wide-ranging, technically and conceptually brilliant research on the functional organization of neuronal circuits in the cerebral cortex, especially in the hippocampus, a region that is crucial for certain forms of memory". Professor Somogyi will be presented with the award in Copenhagen in early May.
More details can be found at: http://www.thebrainprize.org/flx/the_brain_prize/recommendation/ and http://www.ox.ac.uk/media/news_stories/2011/111103.html