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Crossmodal versus unimodal attentional effects

Grant number: 11/20974-4
Support type:Scholarships abroad - Research Internship - Doctorate
Effective date (Start): March 01, 2012
Effective date (End): July 31, 2012
Field of knowledge:Biological Sciences - Physiology - Physiology of Organs and Systems
Principal researcher:Luiz Eduardo Ribeiro Do Valle
Grantee:Luana Lira Righi Quachio
Supervisor abroad: Martin Eimer
Home Institution: Instituto de Ciências Biomédicas (ICB). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Research place: University of London, England  


Contradictory results have been obtained in studies comparing the effects of crossmodal and unimodal exogenous attention. Both similar and different effects have been reported. The study performed in Brazil contrasted the capacity of these two kinds of attention to exclude external noise and enhance target signal. The results suggest that crossmodal attention, similarly to unimodal attention, excludes external visual noise and enhances visual signal. The facilitatory action of crossmodal attention on visual signal takes, however, more time to occur than that of unimodal attention. These results suggest that mechanisms of crossmodal attention take longer to be complete than the mechanisms of unimodal attention. This hypothesis can be confirmed through event-related potentials (ERP). The latency of the N2pc will be longer for crossmodal attention than for unimodal attention whether the attentional mechanisms are responsible for the delay observed. The ERP techniques will be learned in the internship in London and they will be applied subsequently in Brazil. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
GRUBERT, ANNA; RIGHI, LUANA LIRA; EIMER, MARTIN. A unitary focus of spatial attention during attentional capture: Evidence from event-related brain potentials. JOURNAL OF VISION, v. 13, n. 3, SI 2013. Web of Science Citations: 2.

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