Talk by Dr. Benjamin Dann (CSN Virtual Seminar)

We hereby announce the next talk in the 'CSN Virtual Seminar':

Beta and low frequency neurons form condition and state dependent subnetworks in the macaque fronto-parietal grasping circuit

by Dr. Benjamin Dann, Deutsches Primatenzentrum

Abstract

Oscillatory synchrony is proposed to play an important role for flexible sensory-motor transformations. Thereby, it is assumed that changes of the oscillatory network structure at the neuron-level lead to flexible information processing. Yet, how the oscillatory network structure at the neuron-level changes with different behavior remains elusive. To address this gap, we examined changes in the fronto-parietal oscillatory network structure at the neuron-level, while monkeys performed a flexible sensory-motor grasping task. We found that neurons formed separate subnetworks in the beta and low frequency band. The beta subnetwork was active during steady states and the low frequency network during active states of the task, suggesting that both frequencies are mutually exclusive at the neuron-level. Furthermore, both frequency subnetworks reconfigured at the neuron-level for different grip and context conditions, which was lost at any larger scale than neurons in the network. Our results therefore suggest that the oscillatory network structure at the neuron-level meets all the necessary requirements for the coordination of flexible sensory-motor transformations.