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Mostrando ítems 81-90 de 180
Long-term contextual memory in infant rats as evidenced by an ethanol conditioned tolerance procedure
(Elsevier Science, 2017-08)
Conditioned tolerance can be conceptualized as a particular case of Pavlovian conditioning in which contextual cues play the role of the conditioned stimulus. Although the evidence is contradictory, it is frequently assumed ...
Nicotina modula a resposta de medo condicionado contextual em peixe-zebra
(Universidade Federal de Santa MariaBrasilBioquímicaUFSMPrograma de Pós-Graduação em Ciências Biológicas: Bioquímica ToxicológicaCentro de Ciências Naturais e Exatas, 2018-02-26)
Aversive conditions in a certain context trigger associative learning processes, which allow organisms to learn and anticipate potentially dangerous events. Exposure to conspecific alarm substance (CAS) has been used for ...
Efeito do midazolam sobre a reconsolidação e a extinção da memória aversiva contextual em ratas
(2018)
Fêmeas apresentam particularidades no desempenho de tarefas hipocampo-dependentes, como é o caso da memória aversiva contextual. A memória reativada pode seguir destinos diferentes. A duração da sessão de reativação ...
Processamento da memória de medo: dimorfismo sexual e consolidação tardia na amígdala e no córtex pré-frontal medial
(Universidade Federal de Minas GeraisBrasilICB - DEPARTAMENTO DE FISIOLOGIA E BIOFÍSICAPrograma de Pós-Graduação em Ciências Biológicas - Fisiologia e FarmacologiaUFMG, 2021-05-14)
Not all memories last for the lifetime. Generally speaking, memories with high emotional value during acquisition tend to remain accessible for longer periods. However, the mechanisms that interfere with memory endurance ...
Efeitos do isolamento social sobre a extinção da memória de medo condicionado
(Universidade Federal de Minas GeraisBrasilICB - DEPARTAMENTO DE FISIOLOGIA E BIOFÍSICAPrograma de Pós-Graduação em Ciências Biológicas - Fisiologia e FarmacologiaUFMG, 2022-10-19)
Fear memory exhibits great relevance to our survival. However, its permanence and retrieval for prolonged periods and in non-aversive situations can characterize a maladaptive attribute. Considering the fact that social ...
α-Melanocyte-stimulating hormone (α-MSH) reverses impairment of memory reconsolidation induced by interleukin-1 beta (IL-1 beta) hippocampal infusions
(Elsevier Inc, 2010-11)
Interleukin-1 beta (IL-1β) significantly influences cognitive processes. Treatments which raise the level of IL-1β in the brain impair memory consolidation in contextual fear conditioning. However, the effect of IL-1β on ...
Componentes temporais e contextuais no condicionamento de medo e o efeito da inativação reversível do córtex pré-límbico
(Universidade Federal de São Paulo (UNIFESP), 2015-12-18)
Fear conditioning allows the accurate prediction of an aversive stimulus through its association with available environmental cues previously acquired. In addition to delay fear conditioning, in which events to be associated ...
Memory consolidation impairment induced by Interleukin-1β is associated with changes in hippocampal structural plasticity
(Elsevier Science, 2019-09)
Pro-inflammatory cytokines, particularly Interleukin-1β (IL-1β), can affect cognitive processes such as learning and memory. The aim of this study was to establish whether the effect of IL-1β on contextual fear memory is ...
GABAergic signaling within the basolateral amygdala complex modulates resistance to the labilization/reconsolidation process
(Academic Press Inc Elsevier Science, 2017-10)
It is well known that stress can affect mnemonic processes. In particular, stress before contextual fear conditioning induces a memory which exhibits resistance to being interfered with by Midazolam (MDZ) when applied after ...
Poliaminas modulam a memória nas tarefas de medo condicionado e esquiva inibitória em ratos
(Universidade Federal de Santa MariaBRBioquímicaUFSMPrograma de Pós-Graduação em Ciências Biológicas: Bioquímica Toxicológica, 2004-09-03)
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 ...