Long Term Memory Physiology
Mostrando 1-4 de 4 artigos, teses e dissertações.
-
1. 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
-
2. Non-Hebbian properties of long-term potentiation enable high-capacity encoding of temporal sequences.
A hypothesis commonly found in biological and computational studies of synaptic plasticity embodies a version of the 1949 postulate of Hebb that coactivity of pre- and postsynaptic elements results in increased efficacy of their synaptic contacts. This general proposal presaged the identification of the first and still only known long-lasting synaptic plasti
-
3. Toward an evolutionary perspective on conceptual representation: Species-specific calls activate visual and affective processing systems in the macaque
Non-human primates produce a diverse repertoire of species-specific calls and have rich conceptual systems. Some of their calls are designed to convey information about concepts such as predators, food, and social relationships, as well as the affective state of the caller. Little is known about the neural architecture of these calls, and much of what we do
National Academy of Sciences.
-
4. Long-term changes in hippocampal physiology and learning ability of rats after intrahippocampal tetanus toxin.
A chronic epileptic syndrome can be induced by injecting minute doses of tetanus toxin into rat hippocampi. This causes intermittent epileptic fits over a period of 2-4 weeks, after which the fits cease, and the electroencephalogram (e.e.g.) appears to return to normal over the following 2-3 weeks. However, once they have recovered from the seizures, the rat