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Unconscious Cueing via the Superior Colliculi: Evidence from Searching for Onset and Color Targets.

Fuchs I, Ansorge U - Brain Sci (2012)

Bottom Line: When using color change cues instead of abrupt-onset cues, the cueing effect also vanishes (Experiment 6).Together the results support the assumption that unconscious cues can capture attention in different ways, depending on the exact task of the participants, but that one way is attentional capture via the SC.The present findings also offer a reconciliation of conflicting results in the domain of unconscious attention.

View Article: PubMed Central - PubMed

Affiliation: Faculty of Psychology, University of Vienna, Liebiggasse 5, 1010 Vienna, Austria. isabella.fuchs@univie.ac.at.

ABSTRACT
According to the bottom-up theory of attention, unconscious abrupt onsets are highly salient and capture attention via the Superior Colliculi (SC). Crucially, abrupt onsets increase the perceived contrast. In line with the SC hypothesis, unconscious abrupt-onset cues capture attention regardless of the cue color when participants search for abrupt-onset targets (Experiment 1). Also, stronger cueing effects occur for higher than lower contrast cues (Experiment 2) and for temporally, rather than nasally, presented stimuli (Experiment 3). However, in line with the known color-insensitivity of the SC, the SC pathway is shunted and unconscious abrupt-onset cues no longer capture attention when the participants have to search for color-defined targets (Experiment 4) or color-singleton targets (Experiment 5). When using color change cues instead of abrupt-onset cues, the cueing effect also vanishes (Experiment 6). Together the results support the assumption that unconscious cues can capture attention in different ways, depending on the exact task of the participants, but that one way is attentional capture via the SC. The present findings also offer a reconciliation of conflicting results in the domain of unconscious attention.

No MeSH data available.


Experiment 5. (a) Depicted is a schematic example trial (blue target, SP condition). (b) Depicted are the mean RTs and standard errors of the mean (error bars) of all participants, plotted separately for the short (solid line) and long SOA (dashed line).
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brainsci-02-00033-f006: Experiment 5. (a) Depicted is a schematic example trial (blue target, SP condition). (b) Depicted are the mean RTs and standard errors of the mean (error bars) of all participants, plotted separately for the short (solid line) and long SOA (dashed line).

Mentions: The procedure was identical to the one used in Experiment 4, except for one change: When the target disk (left or right) changed to the predefined target color, the disk on the other side of the screen as well as the centre disk both changed to the same distractor color (see Figure 6a). Therefore, participants could have searched for a singleton to find the target.


Unconscious Cueing via the Superior Colliculi: Evidence from Searching for Onset and Color Targets.

Fuchs I, Ansorge U - Brain Sci (2012)

Experiment 5. (a) Depicted is a schematic example trial (blue target, SP condition). (b) Depicted are the mean RTs and standard errors of the mean (error bars) of all participants, plotted separately for the short (solid line) and long SOA (dashed line).
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4061783&req=5

brainsci-02-00033-f006: Experiment 5. (a) Depicted is a schematic example trial (blue target, SP condition). (b) Depicted are the mean RTs and standard errors of the mean (error bars) of all participants, plotted separately for the short (solid line) and long SOA (dashed line).
Mentions: The procedure was identical to the one used in Experiment 4, except for one change: When the target disk (left or right) changed to the predefined target color, the disk on the other side of the screen as well as the centre disk both changed to the same distractor color (see Figure 6a). Therefore, participants could have searched for a singleton to find the target.

Bottom Line: When using color change cues instead of abrupt-onset cues, the cueing effect also vanishes (Experiment 6).Together the results support the assumption that unconscious cues can capture attention in different ways, depending on the exact task of the participants, but that one way is attentional capture via the SC.The present findings also offer a reconciliation of conflicting results in the domain of unconscious attention.

View Article: PubMed Central - PubMed

Affiliation: Faculty of Psychology, University of Vienna, Liebiggasse 5, 1010 Vienna, Austria. isabella.fuchs@univie.ac.at.

ABSTRACT
According to the bottom-up theory of attention, unconscious abrupt onsets are highly salient and capture attention via the Superior Colliculi (SC). Crucially, abrupt onsets increase the perceived contrast. In line with the SC hypothesis, unconscious abrupt-onset cues capture attention regardless of the cue color when participants search for abrupt-onset targets (Experiment 1). Also, stronger cueing effects occur for higher than lower contrast cues (Experiment 2) and for temporally, rather than nasally, presented stimuli (Experiment 3). However, in line with the known color-insensitivity of the SC, the SC pathway is shunted and unconscious abrupt-onset cues no longer capture attention when the participants have to search for color-defined targets (Experiment 4) or color-singleton targets (Experiment 5). When using color change cues instead of abrupt-onset cues, the cueing effect also vanishes (Experiment 6). Together the results support the assumption that unconscious cues can capture attention in different ways, depending on the exact task of the participants, but that one way is attentional capture via the SC. The present findings also offer a reconciliation of conflicting results in the domain of unconscious attention.

No MeSH data available.