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. Author manuscript; available in PMC: 2020 Nov 12.
Published in final edited form as: Neuropsychologia. 2020 Mar 12;142:107416. doi: 10.1016/j.neuropsychologia.2020.107416

Fig. 1. Schematic representation of the conditioning and extinction recall paradigm.

Fig. 1.

Top: During acquisition, one bell (CS+) was repeatedly paired with a red bell and loud alarm sound (UCS); the other bell (CS−) was never paired with the UCS. During extinction, both bells were presented in the absence of the UCS. Bottom: the generalization stimuli and attention states (threat appraisal and explicit memory) during the extinction recall task. Note: CS = conditioned stimulus; UCS = unconditioned stimulus. (For interpretation of the references to color in this figure legend, the reader is referred to the Web version of this article.)