Hanna J, Kim C, Rampp S, Buchfelder M, Müller-Voggel N (2024)
Publication Type: Journal article
Publication year: 2024
Book Volume: 2
Pages Range: 1-24
DOI: 10.1162/imag_a_00117
Directing and maintaining attention toward relevant information and away from non-relevant information is a critical competence of higher-order nervous systems. Here, we used directed connectivity to investigate how the human brain prioritizes appropriate processing paths when participants are performing a behavioral task requiring attention in the visual or the auditory modality. We show that the efficient transfer of information relevant for the task is mediated by a region- and task-specific decrease of alpha band connectivity from the parietal and, in case a motor response is required, motor cortex to the relevant sensory cortices. Further, alpha-band connectivity modulations reliably predict alpha power modulations in the task-related sensory cortices, particularly where the task-irrelevant cortex is inhibited via local alpha power increases. We suggest that the task- and region-specific modulation of alpha-band connectivity in the present study is a basic neuronal mechanism orchestrating the allocation of task-relevant neuronal resources related to and possibly underlying the previously reported sensory alpha power modulations in association with the allocation of competing attentional resources.
APA:
Hanna, J., Kim, C., Rampp, S., Buchfelder, M., & Müller-Voggel, N. (2024). Decreasing alpha flow releases task-specific processing paths. Imaging Neuroscience, 2, 1-24. https://doi.org/10.1162/imag_a_00117
MLA:
Hanna, Jeffrey, et al. "Decreasing alpha flow releases task-specific processing paths." Imaging Neuroscience 2 (2024): 1-24.
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