[1] UCL, Dept Neurosci, Physiol & Pharmacol, London, England
[2] Arizona State Univ, Sch Math & Stat Sci, Tempe, AZ USA
[3] Princeton Univ, Princeton Inst Computat Sci & Engn, Princeton, NJ USA
[4] Princeton Univ, Princeton Neurosci Inst, Princeton, NJ 08544 USA
[5] Intel Corp, Intel Labs, Hillsboro, OR USA