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Prelimbic cortex drives discrimination of non-aversion via amygdala somatostatin interneurons
Journal article   Open access   Peer reviewed

Prelimbic cortex drives discrimination of non-aversion via amygdala somatostatin interneurons

Joseph M. Stujenske, Pia-Kelsey O'neill, Carolina Fernandes-Henriques, Itzick Nahmoud, Samantha R. Goldburg, Ashna Singh, Laritza Diaz, Margarita Labkovich, William Hardin, Scott S. Bolkan, …
Neuron (Cambridge, Mass.), Vol.110(14), pp.2258-2267.e11
07/20/2022
DOI: 10.1016/j.neuron.2022.03.020
PMCID: PMC9308671
PMID: 35397211
url
https://doi.org/10.1016/j.neuron.2022.03.020View
Published (Version of record) Open Access

Abstract

The amygdala and prelimbic cortex (PL) communicate during fear discrimination retrieval, but how they co-ordinate discrimination of a non-threatening stimulus is unknown. Here, we show that somatostatin (SOM) interneurons in the basolateral amygdala (BLA) become active specifically during learned non-threatening cues and desynchronize cell firing by blocking phase reset of theta oscillations during the safe cue. Further-more, we show that SOM activation and desynchronization of the BLA is PL-dependent and promotes discrimination of non-threat. Thus, fear discrimination engages PL-dependent coordination of BLA SOM re-sponses to non-threatening stimuli.
Life Sciences & Biomedicine Neurosciences Neurosciences & Neurology Science & Technology

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