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O impacto do comportamento guiado pelos sentidos no processamento neuronal a longo prazo

O impacto do comportamento guiado pelos sentidos no processamento neuronal a longo prazo

Vida Skreb

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Editorial:
KS OmniScriptum Publishing
Año de edición:
2025
Materia
Biologia, ciencias de la vida
ISBN:
9786208548889
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Com imagens de dois fotões, investigámos as alterações de neuroplasticidade na população neuronal do córtex somatossensorial do rato, correspondente aos bigodes (córtex barril). As imagens foram realizadas diariamente durante meses de aprendizagem de uma tarefa complexa (tarefa de escolha forçada de duas alternativas). Observámos um aumento da atividade neuronal em resposta ao mesmo estímulo sensorial, correlacionado com a aprendizagem. Além disso, verificaram-se diferenças no processamento em linha ao nível do córtex sensorial primário, dependendo do facto de o rato estar comportamentalmente empenhado na tarefa ou de não apresentar qualquer resposta comportamental. Também comparámos o treino de ratos e ratinhos na mesma tarefa complexa e verificámos que as duas espécies aprendem a taxas comparáveis.

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