Neural decoding of visual stimuli varies with fluctuations in global network efficiency.

ABSTRACT: Functional magnetic resonance imaging (fMRI) studies have shown that neural activity fluctuates spontaneously between different states of global synchronization over a timescale of several seconds. Such fluctuations generate transient states of high and low correlation across distributed cortical areas. It has been hypothesized that such fluctuations in global efficiency might alter patterns of activity in local neuronal populations elicited by changes in incoming sensory stimuli. To test this prediction, we used a linear decoder to discriminate patterns of neural activity elicited by face and motion stimuli presented periodically while participants underwent time-resolved fMRI. As predicted, decoding was reliably higher during states of high global efficiency than during states of low eff

SUBMITTER: Cocchi L 

PROVIDER: S-EPMC6866876 | biostudies-literature | 2017 Jun

REPOSITORIES: biostudies-literature