期刊
JOURNAL OF NEUROSCIENCE
卷 38, 期 48, 页码 10305-10313出版社
SOC NEUROSCIENCE
DOI: 10.1523/JNEUROSCI.0079-18.2018
关键词
default mode network; dorsal attention network; electrocorticography; intracranial EEG; network neuroscience
资金
- US National Institute of Mental Health [1R01-MH-109954-01]
- Banting Fellowship from the Canadian Institutes of Health Research
- National Institute of Child Health and Human Development [1F32HD087028-01]
The past decade has seen a large number of neuroimaging studies focused on the anticorrelated functional relationship between the default mode network (DMN) and the dorsal attention network (DAN). Due principally to the low temporal resolution of functional neuroimaging modalities, the fast-neuronal dynamics across these networks remain poorly understood. Here we report novel human intracranial electrophysiology data from six neurosurgical patients ( four males) with simultaneous coverage of well characterized nodes of the DMN and DAN. Subjects performed an arithmetic processing task, shown previously to evoke reliable deactivations (below baseline) in the DMN, and activations in the DAN. In this cohort, we show that DMN deactivations lag DAN activations by approximately 200 ms. Our findings suggest a clear temporal order of processing across the two networks during the current task and place the DMN further than the DAN in a plausible information-processing hierarchy.
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