Here’s the link to Neuron’s Best of 2014-2015 Special Issue:
http://info.cell.com/best-of-neuron-2014-2015
And here’s the paper:
Antzoulatos, E.G. and Miller, E.K. (2014) Increases in functional connectivity between the prefrontal cortex and striatum during category learning. Neuron, 83:216-225. View PDF
Well done, Evan!