Version 1
: Received: 10 September 2023 / Approved: 12 September 2023 / Online: 13 September 2023 (07:33:37 CEST)
Version 2
: Received: 16 October 2023 / Approved: 17 October 2023 / Online: 17 October 2023 (07:31:06 CEST)
Version 3
: Received: 10 November 2023 / Approved: 13 November 2023 / Online: 13 November 2023 (11:05:37 CET)
Soshi, T. Neural Coupling between Interhemispheric and Frontoparietal Functional Connectivity during Semantic Processing. Brain Sci.2023, 13, 1601.
Soshi, T. Neural Coupling between Interhemispheric and Frontoparietal Functional Connectivity during Semantic Processing. Brain Sci. 2023, 13, 1601.
Soshi, T. Neural Coupling between Interhemispheric and Frontoparietal Functional Connectivity during Semantic Processing. Brain Sci.2023, 13, 1601.
Soshi, T. Neural Coupling between Interhemispheric and Frontoparietal Functional Connectivity during Semantic Processing. Brain Sci. 2023, 13, 1601.
Abstract
Interhemispheric and frontoparietal functional connectivity have been reported to increase during explicit information processing. However, it is unclear how and when interhemispheric and frontoparietal functional connectivity interact during explicit semantic processing. Here, we tested the neural coupling hypothesis that explicit semantic processing promotes neural activity in the nondominant right hemispheric areas owing to synchronization with enhanced frontoparietal functional connectivity at later processing stages. We analyzed electroencephalogram data obtained using a semantic priming paradigm, which comprised visual priming and target words successively presented under direct or indirect attention to semantic association. Scalp potential analysis demonstrated that the explicit processing of congruent targets reduced negative event-related potentials, as previously reported. Current source density analysis showed that explicit semantic processing activated the right temporal area during later temporal intervals. Subsequent dynamic functional connectivity and neural coupling analyses revealed that explicit semantic processing increased the correlation between right temporal source activities and frontoparietal functional connectivity in later temporal intervals. These findings indicate that explicit semantic processing increases neural coupling between the interhemispheric and frontoparietal functional connectivity during later processing stages.
Biology and Life Sciences, Neuroscience and Neurology
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Commenter: Takahiro Soshi
Commenter's Conflict of Interests: Author