RT Journal Article
T1 N2pc and attentional capture by colour and orientation-singletons in pure and mixed visual search tasks
A1 Rodríguez Holguín, Socorro
A1 Doallo Pesado, Sonia
A1 Vizoso Gómez, Carmen
A1 Cadaveira Mahía, Fernando
K1 ERPs
K1 Event-related potentials
K1 N2pc
K1 Visual search
K1 Singletons
K1 Attentional capture
K1 Pure task
K1 Mixed task
K1 Potenciais evocados
K1 Estímulos destacados
K1 Captura da atención
K1 Procura visual
K1 Tarefa pura
K1 Tarefa mixta
AB The capture of attention by singleton stimuli in visual search is a matter of contention. Some authors propose that singletons capture attention in a bottom–up fashion if they are salient. Others propose that capture is contingent upon whether or not the stimuli share task-relevant attributes with the target. This study assessed N2pc elicited by colour and orientation singletons in a mixed task (the singleton defined as target changed block-to-block), and a pure task (the target was the same across the whole task). Both singletons elicited N2pc when acting as targets; when acting as non-targets, orientation singletons elicited N2pc only in the mixed task. The results suggest that the singletons were not salient enough to engage attention in a purely bottom–up fashion. Elicitation of N2pc by non-targets in the mixed task should be attributed to top–down processes associated with the current task. Stimuli that act as targets in part of the blocks become not completely irrelevant when non-targets
PB Elsevier
SN 0167-8760
YR 2009
FD 2009
LK http://hdl.handle.net/10347/17876
UL http://hdl.handle.net/10347/17876
LA eng
NO Rodríguez Holguín S; Doallo S; Vizoso C; Cadaveira F. (2009). N2pc and attentional capture by colour and orientation singletons in pure and mixed visual search tasks.. International Journal of Psychophysiology, 73, 279-286
NO This research was supported by a grant from the Spain's Ministry of Education and Sciences (SEJ 2007-61397) at the University of Santiago de Compostela
DS Minerva
RD 27 abr 2026