Bases cognitivas da expectativa temporal. / The cognitive basis of temporal expectations.
AUTOR(ES)
André Mascioli Cravo
FONTE
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia
DATA DE PUBLICAÇÃO
18/01/2011
RESUMO
The ability to anticipate future events is essential for behavior. On the present work, we investigated how different forms of temporal expectations can modulate stimuli processing. In four psychophysical experiments (two of them with EEG) we studied how voluntary action and temporal attention can influence processing at different stages. Our results suggest that mechanisms related to motor preparation can bias the temporal perception of the consequences of this action. Moreover, we found that temporal attention can modulate perceptual and motor stages of stimulus processing. Altogether, our results suggest that temporal expectations can influence different levels of target processing, mainly by controlling cortical excitability of task-relevant regions of the central nervous system.
ASSUNTO(S)
electrophysiology eletrofisiologia fisiologia sensorial neurofisiologia neurophysiology sensory physiology
