Striatal Microstimulation Induces Persistent and Repetitive Negative Decision-Making Predicted by Striatal Beta-Band Oscillation
Name
nihms-993170.pdf
Description
Accepted version
Size
2.99 MB
Format
Adobe PDF
Checksum (MD5)
a4fe2731d67b24397538c38050312e74
Author(s)
Amemori, Ken-ichi
Amemori, Satoko
Gibson, Daniel J
Graybiel, Ann M
Date Issued
2018
Journal
Neuron
Publisher
Elsevier BV
Version
Author's final manuscript
Abstract
© 2018 Elsevier Inc. Persistent thoughts inducing irrationally pessimistic and repetitive decisions are often symptoms of mood and anxiety disorders. Regional neural hyperactivities have been associated with these disorders, but it remains unclear whether there is a specific brain region causally involved in these persistent valuations. Here, we identified potential sources of such persistent states by microstimulating the striatum of macaques performing a task by which we could quantitatively estimate their subjective pessimistic states using their choices to accept or reject conflicting offers. We found that this microstimulation induced irrationally repetitive choices with negative evaluations. Local field potentials recorded in the same microstimulation sessions exhibited modulations of beta-band oscillatory activity that paralleled the persistent negative states influencing repetitive decisions. These findings demonstrate that local striatal zones can causally affect subjective states influencing persistent negative valuation and that abnormal beta-band oscillations can be associated with persistency in valuation accompanied by an anxiety-like state. Amemori et al. identified candidate subcortical loci potentially related to persistency of anxiety-like states and inflexibility in OCD. The authors’ work in non-human primates shows that striatal stimulation induces repetitive negative choice pattern, accompanied by modulation of striatal beta oscillation.
MIT Department
McGovern Institute for Brain Research at MIT
Massachusetts Institute of Technology. Department of Brain and Cognitive Sciences
Terms of Use
Creative Commons Attribution-NonCommercial-NoDerivs License
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DOI of Published Version
https://doi.org/10.1016/J.NEURON.2018.07.022
