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Derman, Rifka C.; Schneider, Kevin; Juarez, Shaina; Delamater, Andrew R. – Learning & Memory, 2018
When discrete localizable stimuli are used during appetitive Pavlovian conditioning, "sign-tracking" and "goal-tracking" responses emerge. Sign-tracking is observed when conditioned responding is directed toward the CS, whereas goal-tracking manifests as responding directed to the site of expected reward delivery. These…
Descriptors: Conditioning, Responses, Stimuli, Rewards
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Barker, Jacqueline M.; Taylor, Jane R.; Chandler, L. Judson – Learning & Memory, 2014
The infralimbic prefrontal cortex (IL) has been shown to be critical for the regulation of flexible behavior, but its precise function remains unclear. This region has been shown to be critical for the acquisition, consolidation, and expression of extinction learning, leading many to hypothesize that IL suppresses behavior as part of a…
Descriptors: Brain Hemisphere Functions, Behavioral Science Research, Knowledge Level, Anatomy
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Gupta-Agarwal, Swati; Jarome, Timothy J.; Fernandez, Jordan; Lubin, Farah D. – Learning & Memory, 2014
It is well established that fear memory formation requires de novo gene transcription in the amygdala. We provide evidence that epigenetic mechanisms in the form of histone lysine methylation in the lateral amygdala (LA) are regulated by NMDA receptor (NMDAR) signaling and involved in gene transcription changes necessary for fear memory…
Descriptors: Memory, Genetics, Brain Hemisphere Functions, Neurological Organization
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Choi, June-Seek; Cain, Christopher K.; LeDoux, Joseph E. – Learning & Memory, 2010
Using a two-way signaled active avoidance (2-AA) learning procedure, where rats were trained in a shuttle box to avoid a footshock signaled by an auditory stimulus, we tested the contributions of the lateral (LA), basal (B), and central (CE) nuclei of the amygdala to the expression of instrumental active avoidance conditioned responses (CRs).…
Descriptors: Responses, Conditioning, Animals, Behavioral Science Research
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Steward, Oswald; Huang, Fen; Guzowski, John F. – Learning & Memory, 2007
Stimulation paradigms that induce perforant path long-term potentiation (LTP) initiate phosphorylation of ERK1/2 and induce expression of a variety of immediate early genes (IEGs). These events are thought to be critical components of the mechanism for establishing the changes in synaptic efficacy that endure for hours or longer. Here we show that…
Descriptors: Stimulation, Seizures, Animals, Behavior Modification
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Schroeder, Jason P.; Packard, Mark G. – Learning & Memory, 2004
eThese experiments examined the effects of posttrial peripheral and intra-amygdala injections of the cholinergic muscarinic receptor agonist oxotremorine on memory consolidation underlying extinction of amphetamine conditioned place preference (CPP) behavior. Male Long-Evans rats were initially trained and tested for an amphetamine (2 mg/kg) CPP.…
Descriptors: Rewards, Memory, Behavior Modification, Biochemistry