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Ardiel, Evan L.; Giles, Andrew C.; Yu, Alex J.; Lindsay, Theodore H.; Lockery, Shawn R.; Rankin, Catharine H. – Learning & Memory, 2016
Habituation is a highly conserved phenomenon that remains poorly understood at the molecular level. Invertebrate model systems, like "Caenorhabditis elegans," can be a powerful tool for investigating this fundamental process. Here we established a high-throughput learning assay that used real-time computer vision software for behavioral…
Descriptors: Habituation, Computer Software, Stimulation, Behavior Patterns
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Braun, Stephanie; Hauber, Wolfgang – Learning & Memory, 2013
Here we examined effects of acute stressors that involve either systemic coadministration of corticosterone/yohimbine (3 mg/kg each) to increase glucocorticoid/noradrenaline activity (denoted as "pharmacological" stressor) or one or several distinct restraint stressors (denoted as "single" vs. "multiple" stressor) on…
Descriptors: Animals, Stress Variables, Performance, Learning Processes
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Morin, Jean-Pascal; Quiroz, Cesar; Mendoza-Viveros, Lucia; Ramirez-Amaya, Victor; Bermudez-Rattoni, Federico – Learning & Memory, 2011
The immediate early gene (IEG) "Arc" is known to play an important role in synaptic plasticity; its protein is locally translated in the dendrites where it has been involved in several types of plasticity mechanisms. Because of its tight coupling with neuronal activity, "Arc" has been widely used as a tool to tag behaviorally activated networks.…
Descriptors: Recognition (Psychology), Brain Hemisphere Functions, Genetics, Learning Processes
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Chang, Chun-hui; Maren, Stephen – Learning & Memory, 2009
Extinction of Pavlovian fear conditioning in rats is a useful model for therapeutic interventions in humans with anxiety disorders. Recently, we found that delivering extinction trials soon (15 min) after fear conditioning yields a short-term suppression of fear, but little long-term extinction. Here, we explored the possible mechanisms underlying…
Descriptors: Intervals, Classical Conditioning, Fear, Anxiety
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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