Closing the mind's eye: Deactivation of visual cortex related to auditory task difficulty

W. David Hairston, Donald A. Hodges, Ramon Casanova, Satoru Hayasaka, Robert Kraft, Joseph A Maldjian, Jonathan H. Burdette

Research output: Contribution to journalArticle

30 Scopus citations

Abstract

Blood oxygen-level-dependent signal decreases relative to baseline (deactivations) can occur with stimulation of an opposing sensory modality. Here, we show the importance of the difficulty of an auditory task on the deactivation of visual cortical areas. Participants performed an auditory temporal-order judgment task in conjunction with sparse-sampling functional MRI at both moderate and high levels of difficulty (adjusted for each individual's own threshold). With moderate difficulty, small deactivations were observed not only in parietal and cingulate cortex, but occipital cortex as well. When the same task was more difficult, deactivations increased significantly to include a greater extent of functionally defined visual cortex. Together, these results suggest that cross-modal deactivations occur in compensation for task difficulty, perhaps acting as an intrinsic filter for nonrelevant information.

Original languageEnglish (US)
Pages (from-to)151-154
Number of pages4
JournalNeuroReport
Volume19
Issue number2
DOIs
StatePublished - Jan 1 2008

Keywords

  • Cross-modal
  • Deactivation
  • Default mode
  • Difficulty
  • Multisensory

ASJC Scopus subject areas

  • Neuroscience(all)

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    Hairston, W. D., Hodges, D. A., Casanova, R., Hayasaka, S., Kraft, R., Maldjian, J. A., & Burdette, J. H. (2008). Closing the mind's eye: Deactivation of visual cortex related to auditory task difficulty. NeuroReport, 19(2), 151-154. https://doi.org/10.1097/WNR.0b013e3282f42509