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Kalbe, Felix; Schwabe, Lars – Journal of Experimental Psychology: Learning, Memory, and Cognition, 2020
Stimuli encoded shortly before an aversive event are typically well remembered. Traditionally, this emotional memory enhancement has been attributed to beneficial effects of physiological arousal on memory formation. Here, we proposed an additional mechanism and tested whether memory formation is driven by the unpredictable nature of aversive…
Descriptors: Prediction, Memory, Fear, Conditioning
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Alfei, Joaquín M.; Monti, Roque I. Ferrer; Molina, Victor A.; Bueno, Adrián M.; Urcelay, Gonzalo P. – Learning & Memory, 2015
Different mnemonic outcomes have been observed when associative memories are reactivated by CS exposure and followed by amnestics. These outcomes include mere retrieval, destabilization-reconsolidation, a transitional period (which is insensitive to amnestics), and extinction learning. However, little is known about the interaction between initial…
Descriptors: Prediction, Fear, Memory, Training
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Holmes, Nathan M.; Westbrook, R. Frederick – Learning & Memory, 2014
Four experiments used rats to study appetitive-aversive transfer. Rats trained to eat a palatable food in a distinctive context and shocked in that context ate and did not freeze when tested 1 d later but froze and did not eat when tested 14 d later. These results were associatively mediated (Experiments 1 and 2), observed when rats were or were…
Descriptors: Animals, Fear, Food, Negative Reinforcement
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Jones, Carolyn E.; Ringuet, Stephanie; Monfils, Marie-H. – Learning & Memory, 2013
Pairing a previously neutral conditioned stimulus (CS; e.g., a tone) to an aversive unconditioned stimulus (US; e.g., a footshock) leads to associative learning such that the tone alone comes to elicit a conditioned response (e.g., freezing). We have previously shown that an extinction session that occurs within the reconsolidation window…
Descriptors: Fear, Conditioning, Stimuli, Associative Learning
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Martel, Guillaume; Hevi, Charles; Friebely, Olivia; Baybutt, Trevor; Shumyatsky, Gleb P. – Learning & Memory, 2010
Synaptically released Zn[superscript 2+] is a potential modulator of neurotransmission and synaptic plasticity in fear-conditioning pathways. Zinc transporter 3 (ZnT3) knock-out (KO) mice are well suited to test the role of zinc in learned fear, because ZnT3 is colocalized with synaptic zinc, responsible for its transport to synaptic vesicles,…
Descriptors: Conditioning, Memory, Fear, Brain Hemisphere Functions
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Kamprath, Kornelia; Wotjak, Carsten T. – Learning & Memory, 2004
Freezing to a tone following auditory fear conditioning is commonly considered as a measure of the strength of the tone-shock association. The decrease in freezing on repeated nonreinforced tone presentation following conditioning, in turn, is attributed to the formation of an inhibitory association between tone and shock that leads to a…
Descriptors: Habituation, Memory, Conditioning, Fear