- Author
- Date
- 5-12-2017
- Title
- Prevention and treatment strategies for contextual overgeneralization
- Journal
- Scientific Reports
- Volume
- 7
- Article number
- 16967
- Number of pages
- 14
- Document type
- Article
- Faculty
- Faculty of Social and Behavioural Sciences (FMG)
- Institute
- Psychology Research Institute (PsyRes)
- Abstract
-
At the core of anxiety disorders lies the tendency to generalize fear from a threatening to a safe situation. A deeper understanding of the mechanisms that facilitate and restrain generalization in humans is therefore needed. Rodent studies showed that pre-exposure to a context that is similar to the threatening context enhanced generalization to the similar context. In Experiment 1 we replicated these animal findings in humans (US-expectancy). Studies on the underlying mechanisms showed that the pre-exposure representation was recalled during conditioning (due to similarity between the contexts) and the shock also became linked to the recalled representation, resulting in greater generalization. In Experiment 2 we developed a pre-exposure procedure that increased the ability to distinguish between the conditioned and pre-exposure contexts, such that presentation of the former would no longer result in recall of the latter. We then observed that overgeneralization (US-expectancy) was prevented. Pre-exposure did not affect generalization of skin conductance response or fear potentiated startle. Finally, exploratory analyses revealed that increased generalization (US-expectancy), if not prevented, could be reduced by a reminder of the conditioned context. Hence, we developed a prevention- and a treatment-strategy for overgeneralization. These findings may guide the development of new therapeutic strategies.
- URL
- go to publisher's site
- Language
- English
- Note
- With supplementary material
- Persistent Identifier
- https://hdl.handle.net/11245.1/44670653-e326-4b1f-b781-86b619c18d04
- Downloads
-
s41598-017-16893-2(Final published version)
- Supplementary materials
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