RRC ID 71493
著者 Hasegawa T, Chiken S, Kobayashi K, Nambu A.
タイトル Subthalamic nucleus stabilizes movements by reducing neural spike variability in monkey basal ganglia.
ジャーナル Nat Commun
Abstract The subthalamic nucleus projects to the external and internal pallidum, the modulatory and output nuclei of the basal ganglia, respectively, and plays an indispensable role in controlling voluntary movements. However, the precise mechanism by which the subthalamic nucleus controls pallidal activity and movements remains elusive. Here, we utilize chemogenetics to reversibly reduce neural activity of the motor subregion of the subthalamic nucleus in three macaque monkeys (Macaca fuscata, both sexes) during a reaching task. Systemic administration of chemogenetic ligands prolongs movement time and increases spike train variability in the pallidum, but only slightly affects firing rate modulations. Across-trial analyses reveal that the irregular discharges in the pallidum coincides with prolonged movement time. Reduction of subthalamic activity also induces excessive abnormal movements in the contralateral forelimb, which are preceded by subthalamic and pallidal phasic activity changes. Our results suggest that the subthalamic nucleus stabilizes pallidal spike trains and achieves stable movements.
巻・号 13(1)
ページ 2233
公開日 2022-4-25
DOI 10.1038/s41467-022-29750-2
PII 10.1038/s41467-022-29750-2
PMID 35468893
PMC PMC9038919
MeSH Animals Basal Ganglia Globus Pallidus Haplorhini Movement Subthalamic Nucleus*
IF 12.121
リソース情報
ニホンザル