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Implicit and explicit systems differently predict possible dangers.

Abstract：

:One strategy to address new potential dangers is to generate defensive responses to stimuli that remind learned threats, a phenomenon called fear generalization. During a threatening experience, the brain encodes implicit and explicit memory traces. Nevertheless, there is a lack of studies comparing implicit and explicit response patterns to novel stimuli. Here, by adopting a discriminative threat conditioning paradigm and a two-alternative forced-choice recognition task, we found that the implicit reactions were selectively elicited by the learned threat and not by a novel similar but perceptually discriminable stimulus. Conversely, subjects explicitly misidentified the same novel stimulus as the learned threat. This generalization response was not due to stress-related interference with learning, but related to the embedded threatening value. Therefore, we suggest a dissociation between implicit and explicit threat recognition profiles and propose that the generalization of explicit responses stems from a flexible cognitive mechanism dedicated to the prediction of danger.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Manassero E,Mana L,Concina G,Renna A,Sacchetti B

doi

10.1038/s41598-019-49751-4

subject

Has Abstract

pub_date

2019-09-16 00:00:00

pages

13367

issue

1

issn

2045-2322

pii

10.1038/s41598-019-49751-4

journal_volume

9

pub_type

杂志文章

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