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Kim, 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
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Rabinak, Christine A.; Orsini, Caitlin A.; Zimmerman, Joshua M.; Maren, Stephen – Learning & Memory, 2009
The basolateral complex (BLA) and central nucleus (CEA) of the amygdala play critical roles in associative learning, including Pavlovian conditioning. However, the precise role for these structures in Pavlovian conditioning is not clear. Recent work in appetitive conditioning paradigms suggests that the amygdala, particularly the BLA, has an…
Descriptors: Stimuli, Classical Conditioning, Associative Learning, Brain Hemisphere Functions
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McNally, Gavan P.; Westbrook, R. Frederick – Learning & Memory, 2006
The ability to detect and learn about the predictive relations existing between events in the world is essential for adaptive behavior. It allows us to use past events to predict the future and to adjust our behavior accordingly. Pavlovian fear conditioning allows anticipation of sources of danger in the environment. It guides attention away from…
Descriptors: Fear, Anxiety, Animals, Nonverbal Learning