Cortico-subcortical β burst dynamics underlying movement cancellation in humans
Abstract
Dominant neuroanatomical models hold that humans regulate their movements via loop-like cortico-subcortical networks, which include the subthalamic nucleus (STN), motor thalamus, and sensorimotor cortex (SMC). Inhibitory commands across these networks are purportedly sent via transient, burst-like signals in the β frequency (15-29Hz). However, since human depth-recording studies are typically limited to one recording site, direct evidence for this proposition is hitherto lacking. Here, we present simultaneous multi-site recordings from SMC and either STN or motor thalamus in humans performing the stop-signal task. In line with their purported function as inhibitory signals, subcortical β-bursts were increased on successful stop-trials. STN bursts in particular were followed within 50ms by increased β-bursting over SMC. Moreover, between-site comparisons (including in a patient with simultaneous recordings from SMC, thalamus, and STN) confirmed that β-bursts in STN temporally precede thalamic β-bursts. This highly unique set of recordings provides empirical evidence for the role of β-bursts in conveying inhibitory commands along long-proposed cortico-subcortical networks underlying movement regulation in humans.
Data availability
All data analyzed during this study and scripts used for analyses are available on Dryad.
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Cortico-subcortical β burst dynamics underlying movement cancellation in humansDryad Digital Repository, doi:10.5061/dryad.gf1vhhmq0.
Article and author information
Author details
Funding
National Institutes of Health (T32GSMC08540)
- Darcy A Diesburg
National Institutes of Health (R01NS117753)
- Jan R Wessel
National Science Foundation (CAREER 1752355)
- Jan R Wessel
Carver College of Medicine & Iowa Neuroscience Institute (Research Program of Excellence Funding)
- Jeremy DW Greenlee
Carver College of Medicine & Iowa Neuroscience Institute (Research Program of Excellence Funding)
- Jan R Wessel
The funders had no role in study design, data collection and interpretation, or the decision to submit the work for publication.
Ethics
Human subjects: Research participants signed a written informed consent document during a clinic visit prior to surgery. Experimental protocols were approved by the University of Iowa's Institutional Review Board (#201402720).
Copyright
© 2021, Diesburg et al.
This article is distributed under the terms of the Creative Commons Attribution License permitting unrestricted use and redistribution provided that the original author and source are credited.
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