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Neural correlates of goal-directed enhancement and suppression of visual stimuli in the absence of conscious perception (vol 81, pg 1346, 2019)
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Taking a closer look at visual search: just how feature-agnostic is singleton detection mode?
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Neural correlates of goal-directed enhancement and suppression of visual stimuli in the absence of conscious perception
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Abstract:
An observer’s current goals can influence the processing of visual stimuli. Such influences can work to enhance goal-relevant stimuli and suppress goal-irrelevant stimuli. Here, we combined behavioral testing and electroencephalography (EEG) to examine whether such enhancement and suppression effects arise even when the stimuli are masked from awareness. We used a feature-based spatial cueing paradigm, in which participants searched four-item arrays for a target in a specific color. Immediately before the target array, a nonpredictive cue display was presented in which a cue matched or mismatched the searched-for target color, and appeared either at the target location (spatially valid) or another location (spatially invalid). Cue displays were masked using continuous flash suppression. The EEG data revealed that target-colored cues produced robust N2pc and N responses—both signatures of spatial orienting—and distractor-colored cues produced a robust P—a signature of suppression. Critically, the cueing effects occurred for both conscious and unconscious cues. The N2pc and N were larger in the aware versus unaware cue condition, but the P was roughly equivalent in magnitude across the two conditions. Our findings suggest that top-down control settings for task-relevant features elicit selective enhancement and suppression even in the absence of conscious perception. We conclude that conscious perception modulates selective enhancement of visual features, but suppression of those features is largely independent of awareness.
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Keyword:
1203 Language and Linguistics; 2809 Sensory Systems; 3205 Experimental and Cognitive Psychology; 3310 Linguistics and Language; Attention: selective; Attentional capture; Visual awareness
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URL: https://espace.library.uq.edu.au/view/UQ:94bf11d
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From eyes to hands: Transfer of learning in the Simon task across motor effectors
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Functional brain networks related to individual differences in human intelligence at rest
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Functional brain networks related to individual differences in human intelligence at rest
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Odours reduce the magnitude of object substitution masking for matching visual targets in females
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Size (mostly) doesn't matter: the role of set size in object substitution masking
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Negative emotional experiences during navigation enhance parahippocampal activity during recall of place information
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Synaesthetic Colours Can Behave More like Recalled Colours, as Opposed to Physical Colours that Can Be Seen
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Effects of audio-visual integration on the detection of masked speech and non-speech sounds
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Perceptual load influences auditory space perception in the ventriloquist aftereffect
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Out of sight, out of mind: The attentional blink can eliminate synaesthetic colours
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