Chenguang and Laura comment on an exciting new paper from the Ji Lab.

Chun-Ting Wu and colleagues found that place cells replay representations of locations to be avoided.  You may read about their findings here:

http://www.nature.com/neuro/journal/v20/n4/full/nn.4507.html

Chenguang and Laura comment on the importance of this work here:

http://www.nature.com/neuro/journal/v20/n4/full/nn.4525.html