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      Attentional modulation of layer dependent activation in primary visual cortex

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      Creators
      Mourik, T. van
      Date of Archiving
      2021
      Archive
      Radboud Data Repository
      DOI
      https://doi.org/10.34973/eb4d-md15
      Publication type
      Dataset
      Access level
      Restricted access
      Please use this identifier to cite or link to this item: https://hdl.handle.net/2066/230577   https://hdl.handle.net/2066/230577
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      Organization
      PI Group MR Techniques in Brain Function
      Audience(s)
      Life sciences
      Languages used
      English
      Key words
      attention; laminar; layer
      Abstract
      Directing spatial attention towards a particular stimulus enhances cortical responses at corresponding regions in cortex. How attention modulates the laminar response profile within the attended region, however, remains unclear. In this paper, we use high field (7T) fMRI to investigate the effects of attention on laminar activity profiles in areas V1-V3; both when a stimulus was presented to the observer, and in the absence of visual stimulation. Replicating previous findings, we find robust increases in the overall BOLD response for attended regions in cortex, both with and without visual stimulation. Interestingly, when analyzing the BOLD response across the individual layers in visual cortex, we observed no evidence for laminar-specific differentiation with attention. We offer several potential explanations for these results, including theoretical, methodological and technical reasons. Additionally, we provide all data and pipelines openly, in order to promote analytic consistency across layer-specific studies, improve reproducibility, and decrease the false positive rate as a result of analytical flexibility.
      This item appears in the following Collection(s)
      • Datasets [1284]
      • Donders Centre for Cognitive Neuroimaging [3442]
       
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