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Decisions Made with Less Evidence Involve Higher Levels of Corticosubthalamic Nucleus Theta Band Synchrony

Baltazar Zavala, Huiling Tan, Simon Little, Keyoumars Ashkan, Alexander L. Green, Tipu Aziz, Thomas Foltynie, Ludvic Zrinzo, Kareem Zaghloul, Peter Brown
2016 Journal of Cognitive Neuroscience  
Consistent with the idea that medial pFC-STN activity is involved in executing cognitive control, the higher levels of ambiguity during these trials were associated with increased theta band synchrony  ...  Notably, this resulted in a decision being made with a lower amount of instantaneous evidence during the slow and medium trials.  ...  are asked to make decisions during higher levels of uncertainty.  ... 
doi:10.1162/jocn_a_00934 pmid:26845109 pmcid:PMC5111088 fatcat:p4shqejkhje55mt2alk2uzx7d4

Oscillations and the basal ganglia: Motor control and beyond

John-Stuart Brittain, Peter Brown
2014 NeuroImage  
Here, we discuss the functional association of oscillations in the basal ganglia and their relationship with cortical activity.  ...  Evidence is accruing from cortical and sub-cortical recordings that these rhythms may be functionally important, although the precise details of their roles remain unclear.  ...  Higher levels of theta and alpha STN power are associated with improved motor performance, at least in PD.  ... 
doi:10.1016/j.neuroimage.2013.05.084 pmid:23711535 pmcid:PMC4813758 fatcat:s3x3qt5a2fhsxicf42cygxoyse

Non-motor Characterization of the Basal Ganglia: Evidence From Human and Non-human Primate Electrophysiology

Robert S. Eisinger, Morgan E. Urdaneta, Kelly D. Foote, Michael S. Okun, Aysegul Gunduz
2018 Frontiers in Neuroscience  
For several decades studies have employed numerous methodologies to uncover evidence pointing to the basal ganglia as a hub of both motor and non-motor function.  ...  We begin by introducing common electrophysiological methodologies for basal ganglia investigation, and then we discuss studies across numerous non-motor domains-emotion, response inhibition, conflict, decision-making  ...  ACKNOWLEDGMENTS The authors wish to thank Daniel Martinez-Ramirez, Adolfo Ramirez-Zamora, Wissam Deeb, Christopher Hess, Joshua Wong, Leonardo Almeida, and the entire Brain Mapping Laboratory at the University of  ... 
doi:10.3389/fnins.2018.00385 pmid:30026679 pmcid:PMC6041403 fatcat:lxtih7idzrbhpcuyf6ds4jer2q

What basal ganglia changes underlie the parkinsonian state? The significance of neuronal oscillatory activity

A. Quiroga-Varela, J.R. Walters, E. Brazhnik, C. Marin, J.A. Obeso
2013 Neurobiology of Disease  
Neuronal hyper-synchronization in the beta (or any other) band is not present despite the presence of bradykinetic features in the rat and monkey models, suggesting that increased beta band power may arise  ...  (MPTP)-treated monkeys, all of which are associated with severe striatal dopamine depletion.  ...  with a post-decision change of the corticalbasal ganglia system, which decreases interference with putative competitive actions.  ... 
doi:10.1016/j.nbd.2013.05.010 pmid:23727447 pmcid:PMC4318562 fatcat:jqxlkm7chbe6xkjr4ajxsyubyy

Neural Correlates of Freezing of Gait in Parkinson's Disease: An Electrophysiology Mini-Review

J. Sebastian Marquez, S. M. Shafiul Hasan, Masudur R. Siddiquee, Corneliu C. Luca, Virendra R. Mishra, Zoltan Mari, Ou Bai
2020 Frontiers in Neurology  
Freezing of gait (FoG) is a disabling symptom characterized as a brief inability to step or by short steps, which occurs when initiating gait or while turning, affecting over half the population with advanced  ...  Yet, due to the complexity of FoG and the lack of a complete understanding of its mechanism, no clear consensus has been reached on the best treatment options.  ...  The increased power in the low-beta and theta bands was found to be associated with FoG vulnerability.  ... 
doi:10.3389/fneur.2020.571086 pmid:33240199 pmcid:PMC7683766 fatcat:weysy6cv6zauddjpvttqw6kehq

Abstracts

2012 Stereotactic and Functional Neurosurgery  
A reduction of quantitative EEG spectral overactivities can be observed particularly in the delta and theta frequency bands.  ...  Methods: We developed a DICOM viewer optimized for Neurosurgeons with a touch-less interface that facilitates the way they interact with the viewer during the surgery.  ...  However, the authors think many neurosurgical institute might experience recurring cases of deafferentation pain after DREZotomy for the brachial plexus injury.  ... 
doi:10.1159/000342226 pmid:23018450 fatcat:tbt5hgte3rf4fna3dytqapi4vq