A mechanism for inter-areal coherence through communication based on connectivity and oscillatory power
| Autor: | Ana Clara Broggini, Hansjörg Scherberger, Marius Schneider, Swathi Sheshadri, Athanasia Tzanou, Benjamin Dann, Martin Vinck, Cem Uran |
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| Rok vydání: | 2021 |
| Předmět: |
Neuroinformatics
Computer science Oscillatory power Optogenetics Synchronization Article 03 medical and health sciences 0302 clinical medicine Cognition mouse 030304 developmental biology Cerebral Cortex 0303 health sciences V1 Mechanism (biology) General Neuroscience Communication macaque Brain Coherence (statistics) Entrainment (biomusicology) LGN coherence 7B Anatomical connectivity gamma beta Neuroscience F5 030217 neurology & neurosurgery phase locking |
| Zdroj: | Neuron, 109, 4050-4067 Neuron, 109, 24, pp. 4050-4067 Neuron |
| ISSN: | 0896-6273 |
| Popis: | Summary Inter-areal coherence between field potentials is a widespread phenomenon in cortex. Coherence has been hypothesized to reflect phase-synchronization between oscillators and flexibly gate communication according to behavioral and cognitive demands. We reveal an alternative mechanism where coherence is not the cause but the consequence of communication and naturally emerges because spiking activity in a sending area causes post-synaptic potentials both in the same and in other areas. Consequently, coherence depends in a lawful manner on power and phase-locking in the sender and connectivity. Changes in oscillatory power explained prominent changes in fronto-parietal and LGN-V1 coherence across behavioral conditions. Optogenetic experiments and excitatory-inhibitory network simulations identified afferent synaptic inputs rather than spiking entrainment as the principal determinant of coherence. These findings suggest that unique spectral profiles of different brain areas automatically give rise to large-scale coherence patterns that follow anatomical connectivity and continuously reconfigure as a function of behavior and cognition. Highlights • Synaptic projections from a sending to a receiving area explain long-range coherence • Inter-areal coherence can be predicted by power and connectivity • Power explains major changes in long-range coherence across behavioral states • Coherence emerges without spiking entrainment due to afferent synaptic inputs Schneider et al. establish a mechanism for inter-areal coherence between field potentials, where it is the result and not the cause of communication. Consequently, coherence depends in a lawful manner on connectivity and power and does not require spiking entrainment. This mechanism explains behavior-related changes in fronto-parietal and LGN-V1 coherence. |
| Databáze: | OpenAIRE |
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