Expectation-induced modulation of metastable activity underlies faster coding of sensory stimuli.

ABSTRACT: Sensory stimuli can be recognized more rapidly when they are expected. This phenomenon depends on expectation affecting the cortical processing of sensory information. However, the mechanisms responsible for the effects of expectation on sensory circuits remain elusive. In the present study, we report a novel computational mechanism underlying the expectation-dependent acceleration of coding observed in the gustatory cortex of alert rats. We use a recurrent spiking network model with a clustered architecture capturing essential features of cortical activity, such as its intrinsically generated metastable dynamics. Relying on network theory and computer simulations, we propose that expectation exerts its function by modulating the intrinsically generated dynamics preceding taste delivery. O

SUBMITTER: Mazzucato L 

PROVIDER: S-EPMC6516078 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature