Results 11 to 20 of about 167,189 (259)
Biomolecules, 2020 Background: Contextual fear conditioning (CFC) is a rodent model that induces a high and long-lasting level of conditioning associated with traumatic memory formation; this behavioral paradigm resembles many characteristics of posttraumatic stress ...
José Joaquín Merino +5 more
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Frontiers in Cellular Neuroscience, 2023 IntroductionNew learning results in modulation of intrinsic plasticity in the underlying brain regions. Such changes in intrinsic plasticity can influence allocation and encoding of future memories such that new memories encoded during the period of ...
Megha Sehgal +3 more
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eLife, 2020 Survival depends on the ability of animals to select the appropriate behavior in response to threat and safety sensory cues. However, the synaptic and circuit mechanisms by which the brain learns to encode accurate predictors of threat and safety remain ...
Mattia Aime +7 more
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eLife, 2022 Understanding the neural basis for individual differences in the skin conductance response (SCR) during discriminative fear conditioning may inform on our understanding of autonomic regulation in fear-related psychopathology. Previous region-of-interest (
Kevin Vinberg +3 more
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Neuroimaging of Fear-Associated Learning [PDF]
Neuropsychopharmacology, 2015 Fear conditioning has been commonly used as a model of emotional learning in animals and, with the introduction of functional neuroimaging techniques, has proven useful in establishing the neurocircuitry of emotional learning in humans. Studies of fear acquisition suggest that regions such as amygdala, insula, anterior cingulate cortex, and hippocampus
John A Greco, Israel Liberzon
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Learned fear to social out-group members are determined by ethnicity and prior exposure
Frontiers in Psychology, 2015 Humans, like other animals, have a tendency to preferentially learn and retain some associations more readily than others. In humans, preferential learning was originally demonstrated for certain evolutionary prepared stimuli, such as snakes and angry ...
Armita eGolkar +2 more
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Observational Fear Learning in Rats: Role of Trait Anxiety and Ultrasonic Vocalization
Brain Sciences, 2021 Rats can acquire fear by observing conspecifics that express fear in the presence of conditioned fear stimuli. This process is called observational fear learning and is based on the social transmission of the demonstrator rat’s emotion and the induction ...
Markus Fendt +2 more
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Learning strategies during fear conditioning [PDF]
Neurobiology of Learning and Memory, 2009 This paper describes a model of fear learning, in which subjects have an option of behavioral responses to impending social defeat. The model generates two types of learning: social avoidance and classical conditioning, dependent upon (1) escape from or (2) social subordination to an aggressor. We hypothesized that social stress provides the impetus as
Russ E, Carpenter, Cliff H, Summers
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Prophylactic Ketamine Attenuates Learned Fear [PDF]
Neuropsychopharmacology, 2017 Ketamine has been reported to be an efficacious antidepressant for major depressive disorder and posttraumatic stress disorder. Most recently, ketamine has also been shown to be prophylactic against stress-induced depressive-like behavior in mice. It remains unknown, however, when ketamine should be administered relative to a stressor in order to ...
Josephine C, McGowan +6 more
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Amygdala Microcircuits Controlling Learned Fear [PDF]
Neuron, 2014 We review recent work on the role of intrinsic amygdala networks in the regulation of classically conditioned defensive behaviors, commonly known as conditioned fear. These new developments highlight how conditioned fear depends on far more complex networks than initially envisioned.
Duvarci, Sevil, Pare, Denis
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