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238 Newest Publications in learning & memory
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Post-retrieval late process contributes to persistence of reactivated fear memory [BRIEF COMMUNICATIONS]
01-06-2013 | Daisuke Nakayama; Yoshiko Yamasaki; Norio Matsuki; Hiroshi Nomura, Learning & Memory, 2013
Several studies have demonstrated the mechanisms involved in memory persistence after learning. However, little is known about memory persistence after retrieval. In this study, a protein synthesis inhibitor, anisomycin, was infused into the basolateral amygdala of mice 9.5 h after retrieval ...
Hippocampus and medial prefrontal cortex contributions to trace and contextual fear memory expression over time [RESEARCH]
01-06-2013 | Christopher L. Beeman; Philip S. Bauer; Jamie L. Pierson; Jennifer J. Quinn, Learning & Memory, 2013
Previous work has shown that damage to the dorsal hippocampus (DH) occurring at recent, but not remote, timepoints following acquisition produces a deficit in trace conditioned fear memory expression. The opposite pattern has been observed with lesions to the medial prefrontal cortex (mPFC). ...
NR2A- and NR2B-containing NMDA receptors in the prelimbic medial prefrontal cortex differentially mediate trace, delay, and contextual fear conditioning [BRIEF COMMUNICATIONS]
01-06-2013 | Marieke R. Gilmartin; Janine L. Kwapis; Fred J. Helmstetter, Learning & Memory, 2013
Activation of N-methyl-D-aspartate receptors (NMDAR) in the prelimbic medial prefrontal cortex (PL mPFC) is necessary for the acquisition of both trace and contextual fear memories, but it is not known how specific NR2 subunits support each association. The NR2B subunit confers unique ...
Differential recruitment of distinct amygdalar nuclei across appetitive associative learning [BRIEF COMMUNICATIONS]
01-06-2013 | Sindy Cole; Daniel J. Powell; Gorica D. Petrovich, Learning & Memory, 2013
The amygdala is important for reward-associated learning, but how distinct cell groups within this heterogeneous structure are recruited during appetitive learning is unclear. Here we used Fos induction to map the functional amygdalar circuitry recruited during early and late training ...
Implication of dopaminergic modulation in operant reward learning and the induction of compulsive-like feeding behavior in Aplysia [RESEARCH]
01-06-2013 | Alexis Bédécarrats; Charles Cornet; John Simmers; Romuald Nargeot, Learning & Memory, 2013
Feeding in Aplysia provides an amenable model system for analyzing the neuronal substrates of motivated behavior and its adaptability by associative reward learning and neuromodulation. Among such learning processes, appetitive operant conditioning that leads to a compulsive-like expression ...
The beneficial effects of leptin on REM sleep deprivation-induced cognitive deficits in mice [RESEARCH]
01-06-2013 | Hsiao-Fu Chang; Chun-Lin Su; Chih-Hua Chang; Yu-Wen Chen; Po-Wu Gean, Learning & Memory, 2013
Leptin, a 167 amino acid peptide, is synthesized predominantly in the adipose tissues and plays a key role in the regulation of food intake and body weight. Recent studies indicate that leptin receptor is expressed with high levels in many brain regions that may regulate synaptic plasticity. ...
Repetitive visual stimulation enhances recovery from severe amblyopia [RESEARCH]
01-06-2013 | Karen L. Montey; Nicolette C. Eaton; Elizabeth M. Quinlan, Learning & Memory, 2013
Severe amblyopia, characterized by a significant reduction in visual acuity through the affected eye, is highly resistant to reversal in adulthood. We have previously shown that synaptic plasticity can be reactivated in the adult rat visual cortex by dark exposure, and the reactivated ...
17{beta}-Estradiol is necessary for extinction of cocaine seeking in female rats [RESEARCH]
01-06-2013 | Robert C. Twining; Jennifer J. Tuscher; Elizabeth M. Doncheck; Karyn M. Frick; Devin Mueller, Learning & Memory, 2013
Human and preclinical models of addiction demonstrate that gonadal hormones modulate acquisition of drug seeking. Little is known, however, about the effects of these hormones on extinction of drug-seeking behavior. Here, we investigated how 17β-estradiol (E2) affects expression and ...
A BDNF sensitive mechanism is involved in the fear memory resulting from the interaction between stress and the retrieval of an established trace [RESEARCH]
01-05-2013 | Marcelo Giachero; Silvia G. Bustos; Gaston Calfa; Victor A. Molina, Learning & Memory, 2013
The present study investigates the fear memory resulting from the interaction of a stressful experience and the retrieval of an established fear memory trace. Such a combination enhanced both fear expression and fear retention in adult Wistar rats. Likewise, midazolam intra-basolateral ...
Disruption of the perineuronal net in the hippocampus or medial prefrontal cortex impairs fear conditioning [RESEARCH]
01-05-2013 | Michael J. Hylin; Sara A. Orsi; Anthony N. Moore; Pramod K. Dash, Learning & Memory, 2013
The perineuronal net (PNN) surrounds neurons in the central nervous system and is thought to regulate developmental plasticity. A few studies have shown an involvement of the PNN in hippocampal plasticity and memory storage in adult animals. In addition to the hippocampus, plasticity in the ...
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