A crossmodal crossover: opposite effects of visual and auditory perceptual load on steady-state evoked potentials to irrelevant visual stimuli

Jacoby, Oscar, Hall, Sarah E. and Mattingley, Jason B. (2012) A crossmodal crossover: opposite effects of visual and auditory perceptual load on steady-state evoked potentials to irrelevant visual stimuli. NeuroImage, 61 4: 1050-1058.


Author Jacoby, Oscar
Hall, Sarah E.
Mattingley, Jason B.
Title A crossmodal crossover: opposite effects of visual and auditory perceptual load on steady-state evoked potentials to irrelevant visual stimuli
Journal name NeuroImage   Check publisher's open access policy
ISSN 1053-8119
1095-9572
Publication date 2012-07-16
Sub-type Article (original research)
DOI 10.1016/j.neuroimage.2012.03.040
Volume 61
Issue 4
Start page 1050
End page 1058
Total pages 9
Place of publication Maryland Heights, MO, United States
Publisher Academic Press
Collection year 2013
Language eng
Abstract Mechanisms of attention are required to prioritise goal-relevant sensory events under conditions of stimulus competition. According to the perceptual load model of attention, the extent to which task-irrelevant inputs are processed is determined by the relative demands of discriminating the target: the more perceptually demanding the target task, the less unattended stimuli will be processed. Although much evidence supports the perceptual load model for competing stimuli within a single sensory modality, the effects of perceptual load in one modality on distractor processing in another is less clear. Here we used steady-state evoked potentials (SSEPs) to measure neural responses to irrelevant visual checkerboard stimuli while participants performed either a visual or auditory task that varied in perceptual load. Consistent with perceptual load theory, increasing visual task load suppressed SSEPs to the ignored visual checkerboards. In contrast, increasing auditory task load enhanced SSEPs to the ignored visual checkerboards. This enhanced neural response to irrelevant visual stimuli under auditory load suggests that exhausting capacity within one modality selectively compromises inhibitory processes required for filtering stimuli in another.
Keyword Distractor interference
Frequency tagging
Neural oscillations
Perceptual load
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Queensland Brain Institute Publications
Official 2013 Collection
School of Psychology Publications
 
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Created: Wed, 06 Jun 2012, 10:40:39 EST by Oscar Jacoby on behalf of School of Psychology