Skip to main content
. Author manuscript; available in PMC: 2010 Aug 17.
Published in final edited form as: Rev Neurosci. 2010;21(1):1–17. doi: 10.1515/revneuro.2010.21.1.1

Fig. 4.

Fig. 4

Molecular changes triggered in the CA1 hippocampal area after short and long extinction trials. Neurons activated by fear conditioning are fluorescently labeled (green) as described in Tronson et al., 2009. Short and long extinction trials activate either ERK (left) or cFos (right), respectively. Scale bar = 5 μm. FDG, fluorescein-di-beta-D-galactopyranoside New contextual representations that are not associated with shock may thus preferentially contribute to extinction after long exposures