Avoidance Conditioning
Mostrando 1-12 de 21 artigos, teses e dissertações.
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1. Animal models of anxiety disorders and stress
Anxiety and stress-related disorders are severe psychiatric conditions that affect performance in daily tasks and represent a high cost to public health. The initial observation of Charles Darwin that animals and human beings share similar characteristics in the expression of emotion raise the possibility of studying the mechanisms of psychiatric disorders i
Rev. Bras. Psiquiatr.. Publicado em: 2013
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2. A participação de diferentes sistemas neuromodulatórios no hipocampo, núcleo basolateral da amígdala e córtex pré-frontal ventromedial na extinção de memórias aversivas
Extinction consists of the learned inhibition of retrieval of previously acquired memory. Many forms of learning are modulated by ¿-noradrenergic, D1-dopaminergic and H2-histaminergic receptors on ventromedial prefrontal cortex (vmPFC), basolateral amygdala (BLA) and dorsal hippocampus. Therefore, the aim of this work was investigated the modulation of aver
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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3. Previous spatial learning is required for the development of place preference in rats following chronic administration of and withdrawal from morphine
The positive reinforcing properties of addictive drugs have a primary role in the development of drug dependence. In the field of opiates, great attention has been given to this phenomenon, as well as to the negative properties eliciting craving and inducing relapse during withdrawal. This study was designed to evaluate whether elevated plus-maze (EPM) exper
Psychology & Neuroscience. Publicado em: 2009-06
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4. Interação entre choques incontroláveis, consumo de álcool e aprendizagem de fuga em ratos / Interaction among uncontrollable shocks, alcohol consumption and escape learning in rats
O objetivo desse trabalho foi verificar os efeitos de choques elétricos, controláveis e incontroláveis, sobre o aumento temporário do consumo e preferência por álcool após um período de abstinência, efeito denominado Alcohol Deprivation Effect (ADE). Buscou ainda verificar se uma história de ingestão e privação de álcool pode afetar a aprendiza
Publicado em: 2009
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5. Allogeneic hematopoietic stem cell transplantation from an alternative stem cell source in Fanconi anemia patients: analysis of 47 patients from a single institution
We transplanted 47 patients with Fanconi anemia using an alternative source of hematopoietic cells. The patients were assigned to the following groups: group 1, unrelated bone marrow (N = 15); group 2, unrelated cord blood (N = 17), and group 3, related non-sibling bone marrow (N = 15). Twenty-four patients (51%) had complete engraftment, which was not influ
Brazilian Journal of Medical and Biological Research. Publicado em: 28/08/2006
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6. POLIAMINAS MODULAM A MEMÓRIA NAS TAREFAS DE MEDO CONDICIONADO E ESQUIVA INIBITÓRIA EM RATOS / POLYAMINES MODULATE MEMORY IN FEAR-CONDIDIONING AND INHIBITORY AVOIDANCE TASKS IN RATS.
The polyamines, spermine, spermidine and putrescine, are a group of aliphatic amines that interact with diverse cellular targets such as nucleic acids and proteins. The polyamines may act as physiological modulators of N-methyl-D-aspartate (NMDA) receptors. The processes mediated by NMDA receptor include synaptic plasticity and formation of neural circuitry.
Publicado em: 2004
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7. Effects of the Selective M1 Muscarinic Receptor Antagonist Dicyclomine on Emotional Memory
The nonselective muscarinic antagonist scopolamine is known to impair the acquisition of some learning tasks such as inhibitory avoidance. There has been recent research into the effects of this drug in contextual fear conditioning and tone fear conditioning paradigms. The purpose of the present study was to assess the role of the selective M1 muscarinic ant
Cold Spring Harbor Laboratory Press.
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8. Brain function and macromolecules. 3. Uridine incorporation into polysomes of mouse brain during short-term avoidance conditioning.
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9. Complex Effects of NMDA Receptor Antagonist APV in the Basolateral Amygdala on Acquisition of Two-Way Avoidance Reaction and Long-Term Fear Memory
Although much has been learned about the role of the amygdala in Pavlovian fear conditioning, relatively little is known about an involvement of this structure in more complex aversive learning, such as acquisition of an active avoidance reaction. In the present study, rats with a pretraining injection of the N-methyl-D-aspartate (NMDA) receptor antagoni
Cold Spring Harbor Laboratory Press.
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10. Intra-Amygdala Muscimol Injections Impair Freezing and Place Avoidance in Aversive Contextual Conditioning
Rats were trained by shocking them in a closed compartment. When subsequently tested in the same closed compartment with no shock, normal rats showed an increased tendency to freeze. They also showed an increased tendency to actively avoid the compartment when given access to an adjacent neutral compartment for the first time. Amygdala inactivation with bila
Cold Spring Harbor Laboratory Press.
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11. The affective component of pain in rodents: Direct evidence for a contribution of the anterior cingulate cortex
Numerous human and animal studies indirectly implicate neurons in the anterior cingulate cortex (ACC) in the encoding of the affective consequences of nociceptor stimulation. No causal evidence, however, has been put forth linking the ACC specifically to this function. Using a rodent pain assay that combines the hind-paw formalin model with the place-conditi
The National Academy of Sciences.
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12. Mechanism for food avoidance learning in the central pattern generator of feeding behavior of Pleurobranchae californica
Food-avoidance conditioning in the mollusk Pleurobranchaea results in suppression of the feeding response to food stimuli. In conditioned animals, identified interneurons of the central pattern generator (CPG) for feeding behavior, the Int-2s, respond to a food stimulus with greater and more long-lasting excitation than controls. Enhanced Int-2 responsivenes