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Optimal Level of Human Intracranial Theta Activity for Behavioral Switching in the Subthalamo-medio-prefrontal Circuit

Overview
Journal Nat Commun
Specialty Biology
Date 2024 Sep 7
PMID 39244544
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Abstract

The ability to switch between rules associating stimuli and responses depend on a circuit including the dorsomedial prefrontal cortex (dmPFC) and the subthalamic nucleus (STN). However, the precise neural implementations of switching remain unclear. To address this issue, we recorded local field potentials from the STN and from the dmPFC of neuropsychiatric patients during behavioral switching. Drift-diffusion modeling revealed that switching is associated with a shift in the starting point of evidence accumulation. Theta activity increases in dmPFC and STN during successful switch trials, while temporally delayed and excessive levels of theta lead to premature switch errors. This seemingly opposing impact of increased theta in successful and unsuccessful switching is explained by a negative correlation between theta activity and the starting point. Together, these results shed a new light on the neural mechanisms underlying the rapid reconfiguration of stimulus-response associations, revealing a Goldilocks' effect of theta activity on switching behavior.

References
1.
Monsell S . Task switching. Trends Cogn Sci. 2003; 7(3):134-140. DOI: 10.1016/s1364-6613(03)00028-7. View

2.
Sakai K . Task set and prefrontal cortex. Annu Rev Neurosci. 2008; 31:219-45. DOI: 10.1146/annurev.neuro.31.060407.125642. View

3.
Isoda M, Hikosaka O . Switching from automatic to controlled action by monkey medial frontal cortex. Nat Neurosci. 2007; 10(2):240-8. DOI: 10.1038/nn1830. View

4.
Isoda M, Hikosaka O . Role for subthalamic nucleus neurons in switching from automatic to controlled eye movement. J Neurosci. 2008; 28(28):7209-18. PMC: 2667154. DOI: 10.1523/JNEUROSCI.0487-08.2008. View

5.
Greenhouse I, Gould S, Houser M, Aron A . Stimulation of contacts in ventral but not dorsal subthalamic nucleus normalizes response switching in Parkinson's disease. Neuropsychologia. 2013; 51(7):1302-9. PMC: 4079723. DOI: 10.1016/j.neuropsychologia.2013.03.008. View