This title appears in the Scientific Report :
2019
Please use the identifier:
http://hdl.handle.net/2128/24122 in citations.
Please use the identifier: http://dx.doi.org/10.1016/j.neuroimage.2019.02.068 in citations.
Distinct modes of top-down cognitive processing in the ventral visual cortex
Distinct modes of top-down cognitive processing in the ventral visual cortex
Top-down cognitive control leads to changes in the sensory processing of the brain. In visual perception such changes can take place in the ventral visual cortex altering the functional asymmetry in forward and backward connections. Here we used fixation-related evoked responses of EEG measurement a...
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Personal Name(s): | Jo, Han-Gue |
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Kellermann, Thilo / Baumann, Conrad / Ito, Junji / Schulte Holthausen, Barbara / Schneider, Frank / Grün, Sonja / Habel, Ute (Corresponding author) | |
Contributing Institute: |
Computational and Systems Neuroscience; INM-6 Computational and Systems Neuroscience; IAS-6 Jara-Institut Brain structure-function relationships; INM-10 |
Published in: | NeuroImage, 193 (2019) S. 201 - 213 |
Imprint: |
Orlando, Fla.
Academic Press
2019
|
DOI: |
10.1016/j.neuroimage.2019.02.068 |
PubMed ID: |
30849527 |
Document Type: |
Journal Article |
Research Program: |
Neuroimaging Connectivity and Activity |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1016/j.neuroimage.2019.02.068 in citations.
Top-down cognitive control leads to changes in the sensory processing of the brain. In visual perception such changes can take place in the ventral visual cortex altering the functional asymmetry in forward and backward connections. Here we used fixation-related evoked responses of EEG measurement and dynamic causal modeling to examine hierarchical forward-backward asymmetry, while twenty-six healthy adults performed cognitive tasks that require different types of top-down cognitive control (memorizing or searching visual objects embedded in a natural scene image). The generative model revealed an enhanced asymmetry toward forward connections during memorizing, whereas enhanced backward connections were found during searching. This task-dependent modulation of forward and backward connections suggests two distinct modes of top-down cognitive processing in cortical networks. The alteration in forward-backward asymmetry might underlie the functional role in the cognitive control of visual information processing. |