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What is Learned Determines How Pavlovian Conditioned Fear is Consolidated in the Brain

Author(s): Leake J; Leidl DM; Lay BPP; Fam JP; Giles MC; Qureshi OA; Westbrook RF; Holmes NM;

Activity in the basolateral amygdala complex (BLA) is needed to encode fears acquired through contact with both innate sources of danger (i.e., things that are painful) and learned sources of danger (e.g., being threatened with a gun). However, within the BLA, the molecular processes required to consolidate the two types of fear are not the same: protein ...

Article GUID: 37963767


NMDA Receptors in the Basolateral Amygdala Complex Are Engaged for Pavlovian Fear Conditioning When an Animal's Predictions about Danger Are in Error

Author(s): Tuval Keidar

It is widely accepted that Pavlovian fear conditioning requires activation of NMDA receptors (NMDARs) in the basolateral amygdala complex (BLA). However, it was recently shown that activation of NMDAR in the BLA is only required for fear conditioning when danger occurs unexpectedly; it is not required for fear conditioning when danger occurs as expected. ...

Article GUID: 37607821


Danger Changes the Way the Brain Consolidates Neutral Information; and Does So by Interacting with Processes Involved in the Encoding of That Information

Author(s): Omar A Qureshi

This study examined the effect of danger on consolidation of neutral information in two regions of the rat (male and female) medial temporal lobe: the perirhinal cortex (PRh) and basolateral amygdala complex (BLA). The neutral information was the association that forms between an auditory stimulus and a visual stimulus (labeled S2 and S1) across their pai ...

Article GUID: 36927572


The Recruitment of a Neuronal Ensemble in the Central Nucleus of the Amygdala During the First Extinction Episode Has Persistent Effects on Extinction Expression

Author(s): Lay BPP; Koya E; Hope BT; Esber GR; Iordanova MD;

Background: Adaptive behavior depends on the delicate and dynamic balance between acquisition and extinction memories. Disruption of this balance, particularly when the extinction of memory loses control over behavior, is the root of treatment failure of maladaptive behaviors such as substance abuse or anxiety disorders. Understanding this balance require ...

Article GUID: 36336498


Prediction error determines whether NMDA receptors in the basolateral amygdala complex are involved in Pavlovian fear conditioning

Author(s): Williams-Spooner MJ; Delaney AJ; Westbrook RF; Holmes NM;

It is widely accepted that activation of N-methyl-D-aspartate receptors (NMDAR) is necessary for the formation of fear memories in the basolateral amygdala complex (BLA). This acceptance is based on findings that blockade of NMDAR in the BLA disrupts Pavlovian fear conditioning in rodents when initially innocuous stimuli are paired with aversive and unexp ...

Article GUID: 35410880


Anxiety-like behavior in female mice is modulated by STAT3 signaling in midbrain dopamine neurons

Author(s): Fernandes MF; Lau D; Sharma S; Fulton S;

The central signaling actions of cytokines are mediated by signal transducer and activator of transcription (STAT3). STAT3 activation plays a pivotal role in the behavioral responses to the adiposity hormone leptin, including in midbrain dopamine (DA) neurons where it mediates the influence of leptin to diminish physical activity and running reward in mal ...

Article GUID: 33872705


Neural substrates of appetitive and aversive prediction error.

Author(s): Iordanova MD, Yau JO, McDannald MA, Corbit LH

Prediction error, defined by the discrepancy between real and expected outcomes, lies at the core of associative learning. Behavioural investigations have provided evidence that prediction error up- and down-regulates associative relationships, and allocates attention to stimuli to enable learning. These behavioural advances have recently been followed by ...

Article GUID: 33453307


Adaptive behaviour under conflict: deconstructing extinction, reversal, and active avoidance learning.

Author(s): Manning EE, Bradfield LA, Iordanova MD

In complex environments, organisms must respond adaptively to situations despite conflicting information. Under natural (i.e. non-laboratory) circumstances, it is rare that cues or responses are consistently paired with a single outcome. Inconsistent pairings are more common, as are situations where cues and responses are associated with multiple outcomes ...

Article GUID: 33035525


Nucleus Accumbens Cell Type- and Input-Specific Suppression of Unproductive Reward Seeking.

Author(s): Lafferty CK, Yang AK, Mendoza JA, Britt JP

Cell Rep. 2020 Mar 17;30(11):3729-3742.e3 Authors: Lafferty CK, Yang AK, Mendoza JA, Britt JP

Article GUID: 32187545


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