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Learn Mem. 2016 Dec 15;24(1):55-58. doi: 10.1101/lm.044362.116. Print 2017 Jan.

Primary auditory cortex regulates threat memory specificity.

Author information

1
Center for Neuroscience, New York University, New York, New York 10003, USA m.b.wigestrand@ibv.uio.no.
2
Department of Molecular Biosciences, University of Oslo, 0371 Oslo, Norway.
3
Center for Neuroscience, New York University, New York, New York 10003, USA.
4
Emotional Brain Institute, Nathan Kline Institute for Psychiatric Research, Orangeburg, New York 10962, USA.

Abstract

Distinguishing threatening from nonthreatening stimuli is essential for survival and stimulus generalization is a hallmark of anxiety disorders. While auditory threat learning produces long-lasting plasticity in primary auditory cortex (Au1), it is not clear whether such Au1 plasticity regulates memory specificity or generalization. We used muscimol infusions in rats to show that discriminatory threat learning requires Au1 activity specifically during memory acquisition and retrieval, but not during consolidation. Memory specificity was similarly disrupted by infusion of PKMζ inhibitor peptide (ZIP) during memory storage. Our findings show that Au1 is required at critical memory phases and suggest that Au1 plasticity enables stimulus discrimination.

PMID:
27980076
PMCID:
PMC5159661
DOI:
10.1101/lm.044362.116
[Indexed for MEDLINE]
Free PMC Article

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