Results 221 to 230 of about 41,850 (262)

SSRIs and conditioned fear

Progress in Neuro-Psychopharmacology and Biological Psychiatry, 2011
Among drugs that act on serotonergic neurotransmission, selective serotonin (5-HT) reuptake inhibitors (SSRIs) are now the gold standard for the treatment of anxiety disorders. The precise mechanisms of the anxiolytic actions of SSRIs are unclear.
Takeshi, Inoue, Yuji, Kitaichi, Tsukasa, Koyama   +2 more
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Desensitization and Fear Conditioning

Psychological 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.
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The conditions that promote fear learning: Prediction error and Pavlovian fear conditioning

Neurobiology of Learning and Memory, 2014
A key insight of associative learning theory is that learning depends on the actions of prediction error: a discrepancy between the actual and expected outcomes of a conditioning trial. When positive, such error causes increments in associative strength and, when negative, such error causes decrements in associative strength.
Susan Shi Yuan, Li, Gavan P, McNally
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Monetary Effects on Fear Conditioning

Psychological Reports, 2013
Previous research has found that the loss of money as a negative secondary reinforcer was as effective as a primary reinforcer during fear conditioning. The purpose of the present study was to explore the effect of monetary gain as a positive secondary reinforcer in fear conditioning.
Chen, Qu, Aiyi, Zhang, Qishan, Chen
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The place of the hippocampus in fear conditioning

European Journal of Pharmacology, 2003
Pavlovian fear conditioning is a phenomenon amenable to laboratory analysis of the neurobiology of fear and the investigation of neural mechanisms of learning and memory. Investigators have made much progress in delineating the neurocircuitry and neurochemistry of fear conditioning.
Matthew J, Sanders, Brian J, Wiltgen, Michael S, Fanselow   +2 more
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Scopolamine, atropine and conditioned fear

Psychopharmacologia, 1967
Two experiments, designed to determine the effects of anticholinergics on fear-conditioning, are reported. The results indicate that scopolamine and atropine were not effective in reducing the conditioning of fear. These experiments indicate that previous findings suggestive of attenuated habituation with the antichiolnergics, cannot reasonable be ...
J R, Vogel, R A, Hughes, P L, Carlton
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Fear conditioning

2002
Abstract ‘Show me a man who is not a slave; one is a slave to lust, another to greed, another to ambition, and all men are slaves to fear’ (Seneca 63–65). Fear drives fundamental responses to the world in individuals and societies alike (Durkheim 1895; Freud 1908).
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Brief fear preexposure facilitates subsequent fear conditioning

Neuroscience Research, 2015
Post-traumatic stress disorder (PTSD) is an anxiety disorder that occurs following an unexpected exposure to a severe psychological event. A history of a brief trauma is reported to affect a risk for future PTSD development; however, little is known about the mechanisms by which a previous trauma exposure drives the sensitivity to a late-coming trauma.
Satoshi, Iwasaki, Tetsuya, Sakaguchi, Yuji, Ikegaya   +2 more
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Facilitation of fear learning by prior and subsequent fear conditioning

Behavioural Brain Research, 2018
Classical fear conditioning is perhaps the premier model system used to study the neurobiological basis of memory formation. Prior work has resulted in a good understanding of both the molecular mechanisms and neural circuits supporting this form of learning.
Jessica, Lee, Amanda S, Russo, Ryan G, Parsons   +2 more
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Effects of dorsal striatum lesions in tone fear conditioning and contextual fear conditioning

Brain Research, 2003
It has been suggested that the striatum mediates hippocampus-independent memory tasks. Classical fear conditioning to a discrete stimulus such as a tone is not affected by hippocampal lesion, whereas contextual fear conditioning is an hippocampus dependent task.
Tatiana L, Ferreira, Karin M, Moreira, Daniela C, Ikeda, Orlando F A, Bueno, Maria Gabriela M, Oliveira   +4 more
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