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