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Direct linkKim, Jee Hyun; Richardson, Rick – Learning & Memory, 2009
Several recent studies report that neurotransmitters that are critically involved in extinction in adult rats are not important for extinction in young rats. Specifically, pretest injection of the [gamma]-aminobutryic acid (GABA) receptor inverse agonist FG7142 has no effect on extinction in postnatal day (P)17 rats, although it reverses…
Descriptors: Animals, Fear, Pretests Posttests, Experiments
Sevelinges, Yannick; Desgranges, Bertrand; Ferreira, Guillaume – Learning & Memory, 2009
Conditioned odor avoidance (COA) results from the association between a novel odor and a delayed visceral illness. The present experiments investigated the role of the basolateral amygdala (BLA) in acquisition and retrieval of COA memory. To address this, we used the GABAA agonist muscimol to temporarily inactivate the BLA during COA acquisition…
Descriptors: Neurology, Memory, Experiments, Olfactory Perception
Pan, Yufeng; Zhou, Yanqiong; Guo, Chao; Gong, Haiyun; Gong, Zhefeng; Liu, Li – Learning & Memory, 2009
The central complex is a prominent structure in the "Drosophila" brain. Visual learning experiments in the flight simulator, with flies with genetically altered brains, revealed that two groups of horizontal neurons in one of its substructures, the fan-shaped body, were required for "Drosophila" visual pattern memory. However,…
Descriptors: Visual Learning, Memory, Brain, Entomology
Myers, Karyn M.; Davis, Michael – Learning & Memory, 2004
The neural mechanisms of fear suppression most commonly are studied through the use of extinction, a behavioral procedure in which a feared stimulus (i.e., one previously paired with shock) is nonreinforced repeatedly, leading to a reduction or elimination of the fear response. Although extinction is perhaps the most convenient index of fear…
Descriptors: Inhibition, Stimuli, Models, Fear
