Action Potential is a blog by the editors of Nature Neuroscience – a forum for our readers, authors, and the entire neuroscience community. We’ll discuss what’s new and exciting in our journal, other journals, and neuroscience in general. We hope for spirited conversation on papers and policies. Comments will be reviewed before being published. You can be as critical or controversial as you like, but please don't get personal or discourteous, and please stay on topic. Thank you.