Abstract：
:Extinction learning is a fundamental capacity for adaptive and flexible behavior. As extinguished conditioned responding is prone to relapse under certain conditions, the necessity of memory consolidation for recovery phenomena to occur has been highlighted recently. Several studies have demonstrated that both acquisition and extinction training need to be properly consolidated for a relapse of the original acquired memory trace to occur. Does this imply that extinguished responses cannot relapse before memory consolidation? To answer this question, we investigated the renewal effect subsequent to an immediate or a delayed (24 h) extinction in a discriminative operant conditioning paradigm. In three different experiments, we could show (1) that acquisition learning does not need to be long-term consolidated for the occurrence of renewal, (2) that the offset of extinction training is a reliable marker for extinction recall in a free-operant extinction learning paradigm where organisms undergo consecutive acquisition training, extinction training as well as testing of conditioned responding and (3), that immediate and long-term consolidated renewal do not demonstrate any qualitative difference in terms of the behavioral output. Our results indicate on the behavioral level that the inhibitory nature of extinction is already present in free-operant learning paradigms and that it does not seem to be affected by the absence of long-term memory consolidation.
journal_name
Behav Brain Resjournal_title
Behavioural brain researchauthors
Packheiser J,Güntürkün O,Pusch Rdoi
10.1016/j.bbr.2019.111947subject
Has Abstractpub_date
2019-09-16 00:00:00pages
111947eissn
0166-4328issn
1872-7549pii
S0166-4328(19)30036-1journal_volume
370pub_type
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