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Cross-modal stimulus conflict: the behavioral effects of stimulus input timing in a visual-auditory Stroop task.

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Date
2013
Authors
Donohue, Sarah E
Appelbaum, Lawrence G
Park, Christina J
Roberts, Kenneth C
Woldorff, Marty G
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Abstract
Cross-modal processing depends strongly on the compatibility between different sensory inputs, the relative timing of their arrival to brain processing components, and on how attention is allocated. In this behavioral study, we employed a cross-modal audio-visual Stroop task in which we manipulated the within-trial stimulus-onset-asynchronies (SOAs) of the stimulus-component inputs, the grouping of the SOAs (blocked vs. random), the attended modality (auditory or visual), and the congruency of the Stroop color-word stimuli (congruent, incongruent, neutral) to assess how these factors interact within a multisensory context. One main result was that visual distractors produced larger incongruency effects on auditory targets than vice versa. Moreover, as revealed by both overall shorter response times (RTs) and relative shifts in the psychometric incongruency-effect functions, visual-information processing was faster and produced stronger and longer-lasting incongruency effects than did auditory. When attending to either modality, stimulus incongruency from the other modality interacted with SOA, yielding larger effects when the irrelevant distractor occurred prior to the attended target, but no interaction with SOA grouping. Finally, relative to neutral-stimuli, and across the wide range of the SOAs employed, congruency led to substantially more behavioral facilitation than did incongruency to interference, in contrast to findings that within-modality stimulus-compatibility effects tend to be more evenly split between facilitation and interference. In sum, the present findings reveal several key characteristics of how we process the stimulus compatibility of cross-modal sensory inputs, reflecting stimulus processing patterns that are critical for successfully navigating our complex multisensory world.
Type
Journal article
Subject
Acoustic Stimulation
Auditory Perception
Behavior
Female
Humans
Male
Models, Neurological
Photic Stimulation
Psychometrics
Reaction Time
Stroop Test
Visual Perception
Young Adult
Permalink
https://hdl.handle.net/10161/13528
Published Version (Please cite this version)
10.1371/journal.pone.0062802
Publication Info
Donohue, Sarah E; Appelbaum, Lawrence G; Park, Christina J; Roberts, Kenneth C; & Woldorff, Marty G (2013). Cross-modal stimulus conflict: the behavioral effects of stimulus input timing in a visual-auditory Stroop task. PLoS One, 8(4). pp. e62802. 10.1371/journal.pone.0062802. Retrieved from https://hdl.handle.net/10161/13528.
This is constructed from limited available data and may be imprecise. To cite this article, please review & use the official citation provided by the journal.
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Scholars@Duke

Appelbaum

Lawrence Gregory Appelbaum

Adjunct Associate Professor in the Department of Psychiatry and Behavioral Sciences
Greg Appelbaum is an Adjunct Associate Professor in the Department of Psychiatry and Behavioral Sciences in the Duke University School of Medicine.  Dr. Appelbaum's research interests primarily concern the brain mechanisms underlying visual cognition, how these capabilities differ among individuals, and how they can be improved through behavioral, neurofeedback, and neuromodulation interventions. Within the field of cognitive neuroscience, his research has addressed visual pe

Kenneth Roberts

Associate In Research
Woldorff

Marty G. Woldorff

Professor in Psychiatry and Behavioral Sciences
Dr. Woldorff's main research interest is in the cognitive neuroscience of attention. At each and every moment of our lives, we are bombarded by a welter of sensory information coming at us from a myriad of directions and through our various sensory modalities -- much more than we can fully process. We must continuously select and extract the most important information from this welter of sensory inputs. How the human brain accomplishes this is one of the core challenges of modern cognitive neuro
Alphabetical list of authors with Scholars@Duke profiles.
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