Classical Conditioning
Mostrando 1-12 de 87 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. Dinâmica do sistema córtico-hipocampal durante o condicionamento contextual de medo / Cortico-hippocampal system dynamics during contextual fear conditioning
O estabelecimento das memórias de longo prazo requer uma efetiva comunicação do hipocampo com o neocortex. Um mecanismo plausível envolvido na comunicação neuronal e na plasticidade sináptica é a sincronização da atividade elétrica cerebral na frequência teta. Estudos recentes mostraram que a sincronização entre os ritmos teta do hipocampo e do
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/02/2012
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3. What ethologically based models have taught us about the neural systems underlying fear and anxiety
Classical Pavlovian fear conditioning to painful stimuli has provided the generally accepted view of a core system centered in the central amygdala to organize fear responses. Ethologically based models using other sources of threat likely to be expected in a natural environment, such as predators or aggressive dominant conspecifics, have challenged this con
Brazilian Journal of Medical and Biological Research. Publicado em: 2012-04
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4. Induction of Zenk protein expression within the nucleus taeniae of the amygdala of pigeons following tone and shock stimulation
In this study, we evaluated the expression of the Zenk protein within the nucleus taeniae of the pigeon’s amygdala (TnA) after training in a classical aversive conditioning, in order to improve our understanding of its functional role in birds. Thirty-two 18-month-old adult male pigeons (Columba livia), weighing on average 350 g, were trained under differe
Brazilian Journal of Medical and Biological Research. Publicado em: 2011-08
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5. Defense-related emotions in humans
The study of the role of serotonin in anxiety has led to the view that this neurotransmitter enhances anxiety, but inhibits panic. Validation of this hypothesis has been made using two experimental procedures that increase anxiety in human volunteers. One is classical conditioning of the skin electrical conductance response, which is assumed to represent anx
Psychology & Neuroscience. Publicado em: 2011
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6. Variação circadiana da expressão da sintase neuronal de óxido nítrico (nNOS) no hipocampo e o condicionamento contextual aversivo em pombos (Columba livia) / Circadian variation in expression of neuronal nitric oxide synthase (nNOS) in the hippocampus and contextual aversive conditioning in pigeons (Columba livia)
A ritmicidade circadiana, expressa na alteração do comportamento e em aspectos morfofisiológicos e moleculares ao longo das 24 horas do dia, é uma das funções básicas dos organismos vivos. Os processos comportamentais e os mecanismos moleculares no hipocampo, que estão envolvidos na aprendizagem e memória, demonstram oscilação circadiana. Vários
Publicado em: 2011
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7. Learning processes and the neural analysis of conditioning
Classical and operant conditioning principles, such as the behavioral discrepancy-derived assumption that reinforcement always selects antecedent stimulus and response relations, have been studied at the neural level, mainly by observing the strengthening of neuronal responses or synaptic connections. A review of the literature on the neural basis of behavio
Psychology & Neuroscience. Publicado em: 2010-12
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8. Organização temporal em processos de condicionamento classico aversivo e na expressão da proteina Zenk no hipocampo de pombos (C. livia) / Temporal organization of classical aversive conditioning processes and expression of Zenk protein in the hippocampus of pigeons (C. livia)
Part of the knowledge about the mechanisms and neural basis of learning, memory and amnesia is based on the investigation of neural correlates of the behavior of non human animals in aversive situations. Moreover, many studies suggest that these behavioral processes are affected by the circadian timing system. The procedures of classical aversive conditionin
Publicado em: 2009
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9. Eficiência energética em ambientes prediais utilizando rede sem fio Zigbee e Controle Fuzzy
This objective of this work is the wireless intelligent building automation focusing on the rational use of energy without prejudice to the thermal comfort. The wireless approach, in this work, could better target retro-fitting of buildings, a great HVAC (Heating, Ventilation and Air Conditioning) market share in Brazil. We used split air conditioners, power
Publicado em: 2009
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10. Effect of neuronal nitric oxide synthase inhibitor 7-nitroindazole on contextual fear memory in pigeons / Efeitos do 7-nitroindazole, um inibidor da sintase neuronal do oxido nitrico (nNOS), sobre o condiciomaneto contextural em pombos
O óxido nítrico (NO), um neurotransmissor não convencional, tem papel importante em processos neurobiológicos de comportamento e de memória. Sua síntese é mediada por três isoformas de sintase do óxido nítrico (NOS): a neuronal (nNOS), a endotelial (eNOS) e induzível (iNOS). Este trabalho analisou o efeito do 7-nitroindazole (7-NI), um inibidor se
Publicado em: 2008
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11. Processos de aprendizagem e memoria aversiva em pombos : analise do envolvimento da proteina quinase C (PKC) / Aversive learning and memory processes in pigeons : analysis of involvement of protein kinase C
O condicionamento clássico aversivo é utilizado para investigar os mecanismos celulares e moleculares na formação da memória em diferentes espécies de animais. Estes envolvem processos sinápticos que desencadeiam mecanismos de sinalização intracelular com ativação de diferentes quinases em momentos específicos. A ativação da PKC é um dos mecan
Publicado em: 2008
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12. O uso do tu no português brasiliense falado
The aim of this research is to analyze the variation of the second person singular pronouns tu/você among speakers from Brasília, and describe the conditioning factors of the variation within different age groups. The study verifies whether the variation happens because these pronouns form a pair of the type T/V, according to the definition proposed by Bro
Publicado em: 2007