Top-down control of cortical gamma-band communication via pulvinar induced phase shifts in the alpha rhythm.

ABSTRACT: Selective routing of information between cortical areas is required in order to combine different sources of information according to cognitive demand. Recent experiments have suggested that alpha band activity originating from the pulvinar coordinates this inter-areal cortical communication. Using a computer model we investigated whether top-down induced shifts in the relative alpha phase between two cortical areas could modulate cortical communication, quantified in terms of changes in gamma band coherence between them. The network model was comprised of two uni-directionally connected neuronal populations of spiking neurons, each representing a cortical area. We find that the phase difference of the alpha oscillations modulating the two neuronal populations strongly affected the interre

SUBMITTER: Quax S 

PROVIDER: S-EPMC5436894 | biostudies-literature | 2017 May

REPOSITORIES: biostudies-literature