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Cortical and subcortical coordination of visual spatial attention revealed by simultaneous EEG-fMRI recording

(2017) JOURNAL OF NEUROSCIENCE. 37(33). p.7803-7810
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Abstract
Visual spatial attention has been studied in humans with both electroencephalography (EEG) and functional magnetic resonance imaging (fMRI) individually. However, due to the intrinsic limitations of each of these methods used alone, our understanding of the systems-level mechanisms underlying attentional control remains limited. Here, we examined trial-to-trial covariations of concurrently recorded EEG and fMRI in a cued visual spatial attention task in humans, which allowed delineation of both the generators and modulators of the cue-triggered event-related oscillatory brain activity underlying attentional control function. The fMRI activity in visual cortical regions contralateral to the cued direction of attention covaried positively with occipital gamma-band EEG, consistent with activation of cortical regions representing attended locations in space. In contrast, fMRI activity in ipsilateral visual cortical regions covaried inversely with occipital alpha-band oscillations, consistent with attention-related suppression of the irrelevant hemispace. Moreover, the pulvinar nucleus of the thalamus covaried with both of these spatially specific, attention-related, oscillatory EEG modulations. Because the pulvinar's neuroanatomical geometry makes it unlikely to be a direct generator of the scalp-recorded EEG, these covariational patterns appear to reflect the pulvinar's role as a regulatory control structure, sending spatially specific signals to modulate visual cortex excitability proactively. Together, these combined EEG/fMRI results illuminate the dynamically interacting cortical and subcortical processes underlying spatial attention, providing important insight not realizable using either method alone.
Keywords
SELECTIVE ATTENTION, GAMMA-OSCILLATIONS, PULVINAR, BRAIN, CORTEX, TASK, SYNCHRONIZATION, SUPPRESSION, INHIBITION, MODULATION, attentional control, EEG, fMRI, pulvinar, visual cortex

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Chicago
Green, Jessica J, Nico Böhler, Kenneth C Roberts, Ling-Chia Chen, Ruth Krebs, Allen W Song, and Marty G Woldorff. 2017. “Cortical and Subcortical Coordination of Visual Spatial Attention Revealed by Simultaneous EEG-fMRI Recording.” Journal of Neuroscience 37 (33): 7803–7810.
APA
Green, J. J., Böhler, N., Roberts, K. C., Chen, L.-C., Krebs, R., Song, A. W., & Woldorff, M. G. (2017). Cortical and subcortical coordination of visual spatial attention revealed by simultaneous EEG-fMRI recording. JOURNAL OF NEUROSCIENCE, 37(33), 7803–7810.
Vancouver
1.
Green JJ, Böhler N, Roberts KC, Chen L-C, Krebs R, Song AW, et al. Cortical and subcortical coordination of visual spatial attention revealed by simultaneous EEG-fMRI recording. JOURNAL OF NEUROSCIENCE. Washington: Soc Neuroscience; 2017;37(33):7803–10.
MLA
Green, Jessica J, Nico Böhler, Kenneth C Roberts, et al. “Cortical and Subcortical Coordination of Visual Spatial Attention Revealed by Simultaneous EEG-fMRI Recording.” JOURNAL OF NEUROSCIENCE 37.33 (2017): 7803–7810. Print.
@article{8530360,
  abstract     = {Visual spatial attention has been studied in humans with both electroencephalography (EEG) and functional magnetic resonance imaging (fMRI) individually. However, due to the intrinsic limitations of each of these methods used alone, our understanding of the systems-level mechanisms underlying attentional control remains limited. Here, we examined trial-to-trial covariations of concurrently recorded EEG and fMRI in a cued visual spatial attention task in humans, which allowed delineation of both the generators and modulators of the cue-triggered event-related oscillatory brain activity underlying attentional control function. The fMRI activity in visual cortical regions contralateral to the cued direction of attention covaried positively with occipital gamma-band EEG, consistent with activation of cortical regions representing attended locations in space. In contrast, fMRI activity in ipsilateral visual cortical regions covaried inversely with occipital alpha-band oscillations, consistent with attention-related suppression of the irrelevant hemispace. Moreover, the pulvinar nucleus of the thalamus covaried with both of these spatially specific, attention-related, oscillatory EEG modulations. Because the pulvinar's neuroanatomical geometry makes it unlikely to be a direct generator of the scalp-recorded EEG, these covariational patterns appear to reflect the pulvinar's role as a regulatory control structure, sending spatially specific signals to modulate visual cortex excitability proactively. Together, these combined EEG/fMRI results illuminate the dynamically interacting cortical and subcortical processes underlying spatial attention, providing important insight not realizable using either method alone.},
  author       = {Green, Jessica J and B{\"o}hler, Nico and Roberts, Kenneth C and Chen, Ling-Chia and Krebs, Ruth and Song, Allen W and Woldorff, Marty G},
  issn         = {0270-6474},
  journal      = {JOURNAL OF NEUROSCIENCE},
  keyword      = {SELECTIVE ATTENTION,GAMMA-OSCILLATIONS,PULVINAR,BRAIN,CORTEX,TASK,SYNCHRONIZATION,SUPPRESSION,INHIBITION,MODULATION,attentional control,EEG,fMRI,pulvinar,visual cortex},
  language     = {eng},
  number       = {33},
  pages        = {7803--7810},
  publisher    = {Soc Neuroscience},
  title        = {Cortical and subcortical coordination of visual spatial attention revealed by simultaneous EEG-fMRI recording},
  url          = {http://dx.doi.org/10.1523/JNEUROSCI.0326-17.2017},
  volume       = {37},
  year         = {2017},
}

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