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. Author manuscript; available in PMC: 2008 Sep 20.
Published in final edited form as: Neuron. 2007 Sep 20;55(6):970–984. doi: 10.1016/j.neuron.2007.08.004

Figure 1. Behavioral tasks and recording site reconstruction.

Figure 1

A. Trace-conditioning task. Sequence of events for trials. For CSs followed by large rewards or punishments, reinforcement contingencies reverse without warning after initial learning. Not depicted: a third trial type, in which non-reinforcement or a small reward followed a CS. B. Random task. Rewards and air-puffs were presented with equal probability in a random order. C. Anatomical reconstruction of recording sites in monkey L, with amygdala extent and site locations estimated by MRI. Left, coronal slice. Right, sagittal slice. Symbols indicate properties of recorded cells. Green, rEM cells; red, aEM cells; black, nEM cells; blue, no effect of expectation; solid and open circles, 100% and 80% probability trace-conditioning tasks, respectively.