A functional MRI investigation of crossmodal interference in an audiovisual Stroop task

Megan C. Fitzhugh, Peter S. Whitehead, Lisa Johnson, Julia M. Cai, Leslie C. Baxter, Corianne Reddy

    Research output: Contribution to journalArticle

    Abstract

    The visual color-word Stroop task is widely used in clinical and research settings as a measure of cognitive control. Numerous neuroimaging studies have used color-word Stroop tasks to investigate the neural resources supporting cognitive control, but to our knowledge all have used unimodal (typically visual) Stroop paradigms. Thus, it is possible that this classic measure of cognitive control is not capturing the resources involved in multisensory cognitive control. The audiovisual integration and crossmodal correspondence literatures identify regions sensitive to congruency of auditory and visual stimuli, but it is unclear how these regions relate to the unimodal cognitive control literature. In this study we aimed to identify brain regions engaged by crossmodal cognitive control during an audiovisual color-word Stroop task, and how they relate to previous unimodal Stroop and audiovisual integration findings. First, we replicated previous behavioral audiovisual Stroop findings in an fMRI-adapted audiovisual Stroop paradigm: incongruent visual information increased reaction time towards an auditory stimulus and congruent visual information decreased reaction time. Second, we investigated the brain regions supporting cognitive control during an audiovisual color-word Stroop task using fMRI. Similar to unimodal cognitive control tasks, a left superior parietal region exhibited an interference effect of visual information on the auditory stimulus. This superior parietal region was also identified using a standard audiovisual integration localizing procedure, indicating that audiovisual integration resources are sensitive to cognitive control demands. Facilitation of the auditory stimulus by congruent visual information was found in posterior superior temporal cortex, including in the posterior STS which has been found to support audiovisual integration. The dorsal anterior cingulate cortex, often implicated in unimodal Stroop tasks, was not modulated by the audiovisual Stroop task. Overall the findings indicate that an audiovisual color-word Stroop task engages overlapping resources with audiovisual integration and overlapping but distinct resources compared to unimodal Stroop tasks.

    Original languageEnglish (US)
    Article numbere0210736
    JournalPLoS One
    Volume14
    Issue number1
    DOIs
    StatePublished - Jan 1 2019

    Fingerprint

    audiovisuals
    Color
    Magnetic Resonance Imaging
    Stroop Test
    Parietal Lobe
    Reaction Time
    color
    Gyrus Cinguli
    Brain
    Temporal Lobe
    Neuroimaging
    cortex
    brain
    Research

    ASJC Scopus subject areas

    • Biochemistry, Genetics and Molecular Biology(all)
    • Agricultural and Biological Sciences(all)

    Cite this

    Fitzhugh, M. C., Whitehead, P. S., Johnson, L., Cai, J. M., Baxter, L. C., & Reddy, C. (2019). A functional MRI investigation of crossmodal interference in an audiovisual Stroop task. PLoS One, 14(1), [e0210736]. https://doi.org/10.1371/journal.pone.0210736

    A functional MRI investigation of crossmodal interference in an audiovisual Stroop task. / Fitzhugh, Megan C.; Whitehead, Peter S.; Johnson, Lisa; Cai, Julia M.; Baxter, Leslie C.; Reddy, Corianne.

    In: PLoS One, Vol. 14, No. 1, e0210736, 01.01.2019.

    Research output: Contribution to journalArticle

    Fitzhugh, Megan C. ; Whitehead, Peter S. ; Johnson, Lisa ; Cai, Julia M. ; Baxter, Leslie C. ; Reddy, Corianne. / A functional MRI investigation of crossmodal interference in an audiovisual Stroop task. In: PLoS One. 2019 ; Vol. 14, No. 1.
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