Preprint Hypothesis Version 1 Preserved in Portico This version is not peer-reviewed

Mechanisms of Network Interactions for Flexible Cortico-Basal Ganglia-Mediated Action Control

Version 1 : Received: 17 March 2021 / Approved: 18 March 2021 / Online: 18 March 2021 (12:19:11 CET)

How to cite: Fischer, P. Mechanisms of Network Interactions for Flexible Cortico-Basal Ganglia-Mediated Action Control. Preprints 2021, 2021030478 (doi: 10.20944/preprints202103.0478.v1). Fischer, P. Mechanisms of Network Interactions for Flexible Cortico-Basal Ganglia-Mediated Action Control. Preprints 2021, 2021030478 (doi: 10.20944/preprints202103.0478.v1).

Abstract

In humans, finely tuned gamma synchronization (60-90 Hz) rapidly appears at movement onset in a motor control network involving primary motor cortex, the basals ganglia and motor thalamus. Yet the functional consequences of brief movement-related synchronization are still unclear. Distinct synchronization phenomena have also been linked to different forms of motor inhibition, including relaxing antagonist muscles, rapid movement interruption and stabilizing network dynamics for sustained contractions. Here I will introduce detailed hypotheses about how intra- and inter-site synchronization could interact with firing rate changes in different parts of the network to enable flexible action control. The here proposed cause-and-effect relationships shine a spotlight on potential key mechanisms of cortico-basal ganglia-thalamo-cortical communication. Confirming or revising these hypotheses will be critical in understanding the neuronal basis of flexible movement initiation, invigoration and inhibition. Ultimately, the study of more complex cognitive phenomena will also become more tractable once we understand the neuronal mechanisms underlying behavioural readouts.

Subject Areas

Gamma oscillations; beta oscillations; subthalamic nucleus; globus pallidus; movement control

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