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| Author(s): |
André Mascioli Cravo
Total Authors: 1
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| Document type: | Doctoral Thesis |
| Press: | São Paulo. |
| Institution: | Universidade de São Paulo (USP). Instituto de Ciências Biomédicas (ICB/SDI) |
| Defense date: | 2011-01-18 |
| Examining board members: |
Marcus Vinicius Chrysostomo Baldo;
André Frazão Helene;
Birajara Soares Machado;
Edgard Morya;
Luiz Eduardo Ribeiro do Valle
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| Advisor: | Marcus Vinicius Chrysostomo Baldo |
| Abstract | |
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. (AU) | |