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- W2786172279 endingPage "952.e4" @default.
- W2786172279 startingPage "940" @default.
- W2786172279 abstract "Patterns of spontaneous brain activity, typically measured in humans at rest with fMRI, are used routinely to assess the brain's functional organization. The mechanisms that generate and coordinate the underlying neural fluctuations are largely unknown. Here we investigate the hypothesis that the nucleus basalis of Meynert (NBM), the principal source of widespread cholinergic and GABAergic projections to the cortex, contributes critically to such activity. We reversibly inactivated two distinct sites of the NBM in macaques while measuring fMRI activity across the brain. We found that inactivation led to strong, regionalized suppression of shared or global signal components of cortical fluctuations ipsilateral to the injection. At the same time, the commonly studied resting-state networks retained their spatial structure under this suppression. The results indicate that the NBM contributes selectively to the global component of functional connectivity but plays little if any role in the specific correlations that define resting-state networks." @default.
- W2786172279 created "2018-02-23" @default.
- W2786172279 creator A5014732069 @default.
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- W2786172279 creator A5050553111 @default.
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- W2786172279 creator A5072065426 @default.
- W2786172279 creator A5083348658 @default.
- W2786172279 creator A5089637220 @default.
- W2786172279 date "2018-02-01" @default.
- W2786172279 modified "2023-10-15" @default.
- W2786172279 title "The Basal Forebrain Regulates Global Resting-State fMRI Fluctuations" @default.
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