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. Author manuscript; available in PMC: 2011 Jul 14.
Published in final edited form as: Neuroscience. 2010 Apr 22;168(3):652–658. doi: 10.1016/j.neuroscience.2010.04.030

Figure 1.

Figure 1

Fear conditioning and extinction protocol. CS+: conditioned stimulus, CS-: conditioned stimulus never paired with shock (unconditioned stimulus, US). Adapted from Milad et al., 2005.