fear conditioning


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fear conditioning

A conditioned response induced by linking an intense noxious stimulus to an unrelated stimulus–eg, auditory stimulus. See Fight-or-Flight response.
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Most studies addressing the underlying mechanisms at the level of neuronal circuits have focused on aversive learning, such as in Pavlovian fear conditioning.
He cited work with animals in which fear conditioning can be unlearned.
Contextual fear conditioning is associated with an increase of acetylcholine release in the hippocampus of rat.
We used contextual fear conditioning to assess hippocampaldependent memory, which has been reported to be uniquely vulnerable to early-life insults (Williamson et al.
After the fear conditioning procedure, the participants were taught cognitive strategies-akin to those prescribed by therapists and collectively titled cognitive-behavioral therapy (CBT)-in order to learn to diminish the fears brought on by the experiment.
In the paper, "Transplantation of Human Fetal-Derived Neural Stem Cells Improves Cognitive Function Following Cranial Irradiation," researchers at the University of California Irvine showed that rats who received NSI-566 transplants after brain irradiation improved hippocampal spatial memory as well as contextual fear conditioning performance, a brain function that relies on intact amygdala function.
Two areas of research, fear conditioning and learned nonuse theory, provided substantive findings addressing these criteria.
9) It has been speculated that similar brain mechanisms may underlie contextual fear conditioning across species.
The role of context within which the conditioning takes place also needs to be investigated because in fear conditioning it has been shown that fear reactions develop to an environmental context within which the conditioning took place (Philips & LeDoux, 1994).
Some of the intelligent information technology applications described include neuronal ensemble entropy coding in the anterior cingulated cortex of rats under fear conditioning, the impact of resolution on facial recognition, and application of the ant colony algorithm to QoS multicast routing.
Pronounced activity in another prefrontal area accompanied sparse blood flow in the hippocampus and amygdala, areas responsible for consciously recalled memories and fear conditioning, respectively.