Dynamic changes in large-scale functional connectivity prior to stimulation determine performance in a multisensory task
Complex behavior and task execution require fast changes of local activity and functional connectivity in cortical networks at multiple scales. The roles that changes of power and connectivity play during these processes are still not well understood. Here, we study how fluctuations of functional co...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2025-02-01
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| Series: | Frontiers in Systems Neuroscience |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fnsys.2025.1524547/full |
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| author | Edgar E. Galindo-Leon Karl J. Hollensteiner Florian Pieper Gerhard Engler Guido Nolte Andreas K. Engel |
| author_facet | Edgar E. Galindo-Leon Karl J. Hollensteiner Florian Pieper Gerhard Engler Guido Nolte Andreas K. Engel |
| author_sort | Edgar E. Galindo-Leon |
| collection | DOAJ |
| description | Complex behavior and task execution require fast changes of local activity and functional connectivity in cortical networks at multiple scales. The roles that changes of power and connectivity play during these processes are still not well understood. Here, we study how fluctuations of functional cortical coupling across different brain areas determine performance in an audiovisual, lateralized detection task in the ferret. We hypothesized that dynamic variations in the network’s state determine the animals’ performance. We evaluated these by quantifying changes of local power and of phase coupling across visual, auditory and parietal regions. While power for hit and miss trials showed significant differences only during stimulus and response onset, phase coupling already differed before stimulus onset. An analysis of principal components in coupling at the single-trial level during this period allowed us to reveal the subnetworks that most strongly determined performance. Whereas higher global phase coupling of visual and auditory regions to parietal cortex was predictive of task performance, a second component revealed a reduction in coupling between subnetworks of different sensory modalities, probably to allow a better detection of the unimodal signals. Furthermore, we observed that long-range coupling became more predominant during the task period compared to the pre-stimulus baseline. Taken together, our results show that fluctuations in the network state, as reflected in large-scale coupling, are key determinants of the animals’ behavior. |
| format | Article |
| id | doaj-art-e176b98683cc49678c7b5106156b3f77 |
| institution | Kabale University |
| issn | 1662-5137 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Systems Neuroscience |
| spelling | doaj-art-e176b98683cc49678c7b5106156b3f772025-02-12T07:25:50ZengFrontiers Media S.A.Frontiers in Systems Neuroscience1662-51372025-02-011910.3389/fnsys.2025.15245471524547Dynamic changes in large-scale functional connectivity prior to stimulation determine performance in a multisensory taskEdgar E. Galindo-LeonKarl J. HollensteinerFlorian PieperGerhard EnglerGuido NolteAndreas K. EngelComplex behavior and task execution require fast changes of local activity and functional connectivity in cortical networks at multiple scales. The roles that changes of power and connectivity play during these processes are still not well understood. Here, we study how fluctuations of functional cortical coupling across different brain areas determine performance in an audiovisual, lateralized detection task in the ferret. We hypothesized that dynamic variations in the network’s state determine the animals’ performance. We evaluated these by quantifying changes of local power and of phase coupling across visual, auditory and parietal regions. While power for hit and miss trials showed significant differences only during stimulus and response onset, phase coupling already differed before stimulus onset. An analysis of principal components in coupling at the single-trial level during this period allowed us to reveal the subnetworks that most strongly determined performance. Whereas higher global phase coupling of visual and auditory regions to parietal cortex was predictive of task performance, a second component revealed a reduction in coupling between subnetworks of different sensory modalities, probably to allow a better detection of the unimodal signals. Furthermore, we observed that long-range coupling became more predominant during the task period compared to the pre-stimulus baseline. Taken together, our results show that fluctuations in the network state, as reflected in large-scale coupling, are key determinants of the animals’ behavior.https://www.frontiersin.org/articles/10.3389/fnsys.2025.1524547/fullphaseconnectivityauditoryvisualaudiovisualECoG |
| spellingShingle | Edgar E. Galindo-Leon Karl J. Hollensteiner Florian Pieper Gerhard Engler Guido Nolte Andreas K. Engel Dynamic changes in large-scale functional connectivity prior to stimulation determine performance in a multisensory task Frontiers in Systems Neuroscience phase connectivity auditory visual audiovisual ECoG |
| title | Dynamic changes in large-scale functional connectivity prior to stimulation determine performance in a multisensory task |
| title_full | Dynamic changes in large-scale functional connectivity prior to stimulation determine performance in a multisensory task |
| title_fullStr | Dynamic changes in large-scale functional connectivity prior to stimulation determine performance in a multisensory task |
| title_full_unstemmed | Dynamic changes in large-scale functional connectivity prior to stimulation determine performance in a multisensory task |
| title_short | Dynamic changes in large-scale functional connectivity prior to stimulation determine performance in a multisensory task |
| title_sort | dynamic changes in large scale functional connectivity prior to stimulation determine performance in a multisensory task |
| topic | phase connectivity auditory visual audiovisual ECoG |
| url | https://www.frontiersin.org/articles/10.3389/fnsys.2025.1524547/full |
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