Results 11 to 20 of about 716,992 (304)

Fear conditioning in invertebrates

open access: yesFrontiers in Behavioral Neuroscience, 2022
Learning to identify and predict threats is a basic skill that allows animals to avoid harm. Studies in invertebrates like Aplysia californica, Drosophila melanogaster, and Caenorhabditis elegans have revealed that the basic mechanisms of learning and ...
Amy K. Pribadi   +3 more
doaj   +3 more sources

Contextual Fear Conditioning Alter Microglia Number and Morphology in the Rat Dorsal Hippocampus [PDF]

open access: yesFrontiers in Cellular Neuroscience, 2019
Contextual fear conditioning is a Pavlovian conditioning paradigm capable of rapidly creating fear memories to contexts, such as rooms or chambers.
Nicholas Chaaya   +19 more
doaj   +2 more sources

Desensitization and Fear Conditioning

open access: yesPsychological Reports, 1965
Varied numbers of electroshock administrations followed by equal numbers of CS-UCS paired presentations were given to 7 groups of male albino rats to study desensitization and fear conditioning. Conditioned fear R, measured by the obstruction apparatus, was weaker in rats shocked prior to fear conditioning.
Andrew Strouthes
openaire   +3 more sources

Serotonergic Modulation of Conditioned Fear [PDF]

open access: yesScientifica, 2012
Conditioned fear plays a key role in anxiety disorders as well as depression and other neuropsychiatric conditions. Understanding how neuromodulators drive the associated learning and memory processes, including memory consolidation, retrieval/expression,
Judith R. Homberg
doaj   +3 more sources

Contextual Fear Conditioning in Zebrafish [PDF]

open access: yesLearning & Memory, 2016
Abstract Zebrafish are a genetically tractable vertebrate that hold considerable promise for elucidating the molecular basis of behavior. Although numerous recent advances have been made in the ability to precisely manipulate the zebrafish genome, much less is known about many aspects learning and memory in adult fish.
Kenney, Justin W.   +3 more
openaire   +2 more sources

Extinction in Human Fear Conditioning [PDF]

open access: yesBiological Psychiatry, 2006
Although most extinction research is conducted in animal laboratories, the study of extinction learning in human fear conditioning has gained increasing attention over the last decade. The most important findings from human fear extinction are reviewed in this article.
Hermans, Dirk   +3 more
openaire   +3 more sources

Fear conditioning- and extinction-induced neuronal plasticity in the mouse amygdala [PDF]

open access: yes, 2009
Experience-dependent changes in behavior are mediated by long-term functional modifications in brain circuits. To study the underlying mechanisms, our lab is using classical auditory fear conditioning, a simple and robust form of associative learning. In
Ciocchi, Stéphane
core   +1 more source

Enhanced Instructed Fear Learning in Delusion-Proneness

open access: yesFrontiers in Psychology, 2022
Psychosis is associated with distorted perceptions and deficient bottom-up learning such as classical fear conditioning. This has been interpreted as reflecting imprecise priors in low-level predictive coding systems. Paradoxically, overly strong beliefs,
Anaïs Louzolo   +7 more
doaj   +1 more source

The NMDA agonist D-cycloserine facilitates fear memory consolidation in humans [PDF]

open access: yes, 2009
Animal research suggests that the consolidation of fear and extinction memories depends on N-methyl D-aspartate (NMDA)- type glutamate receptors.
Dolan, RJ   +21 more
core   +1 more source

Generalization gradients for fear and disgust in human associative learning

open access: yesScientific Reports, 2021
Previous research indicates that excessive fear is a critical feature in anxiety disorders; however, recent studies suggest that disgust may also contribute to the etiology and maintenance of some anxiety disorders.
Jinxia Wang   +4 more
doaj   +1 more source

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