Journal
BEHAVIORAL NEUROSCIENCE
Volume 119, Issue 3, Pages 677-686Publisher
AMER PSYCHOLOGICAL ASSOC
DOI: 10.1037/0735-7044.119.3.677
Keywords
amygdala; associative learning; emotion; implicit memory; anxiety
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Funding
- NIDA NIH HHS [DA14094] Funding Source: Medline
- NIMH NIH HHS [MH50812, MH58911] Funding Source: Medline
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A contextual reinstatement procedure was developed to assess the contributions of environmental cues and hippocampal function in the recovery of conditioned fear following extinction in humans. Experiment 1 showed context specificity in the recovery of extinguished skin conductance responses after presentations of an auditory unconditioned stimulus. Experiment 2 demonstrated that fear recovery did not generalize to an explicitly Impaired conditioned stimulus. Experiment 3 replicated the context dependency of fear recovery with a shock as an unconditioned stimulus. Two amnesic patients failed to recover fear responses following reinstatement in the same context, despite showing initial fear acquisition. These results extend the known functions of the human hippocampus and highlight the importance of environmental contexts in regulating the expression of latent fear associations.
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