Parkinson's disease uncovers an underlying sensitivity of subthalamic nucleus neurons to beta-frequency cortical input in vivo.
Parkinson's disease uncovers an underlying sensitivity of subthalamic nucleus neurons to beta-frequency cortical input in vivo.
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帕金森氏病揭示了丘脑核神经元对体内β-频率皮质输入的潜在灵敏度。
DOI:
10.1016/j.nbd.2020.105119
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发表时间:
2020-12
影响因子:
6.1
通讯作者:
Sharott A
中科院分区:
文献类型:
--
作者:
Baaske MK;Kormann E;Holt AB;Gulberti A;McNamara CG;Pötter-Nerger M;Westphal M;Engel AK;Hamel W;Brown P;Moll CKE;Sharott A
Abnormally sustained beta-frequency synchronisation between the motor cortex and subthalamic nucleus (STN) is associated with motor symptoms in Parkinson's disease (PD). It is currently unclear whether STN neurons have a preference for beta-frequency input (12-35 Hz), rather than cortical input at other frequencies, and how such a preference would arise following dopamine depletion. To address this question, we combined analysis of cortical and STN recordings from awake human PD patients undergoing deep brain stimulation surgery with recordings of identified STN neurons in anaesthetised rats. In these patients, we demonstrate that a subset of putative STN neurons is strongly and selectively sensitive to magnitude fluctuations of cortical beta oscillations over time, linearly increasing their phase-locking strength with respect to the full range of instantaneous amplitude in the beta-frequency range. In rats, we probed the frequency response of STN neurons in the cortico-basal-ganglia-network more precisely, by recording spikes evoked by short bursts of cortical stimulation with variable frequency (4-40 Hz) and constant amplitude. In both healthy and dopamine-depleted rats, only beta-frequency stimulation led to a progressive reduction in the variability of spike timing through the stimulation train. This suggests, that the interval of beta-frequency input provides an optimal window for eliciting the next spike with high fidelity. We hypothesize, that abnormal activation of the indirect pathway, via dopamine depletion and/or cortical stimulation, could trigger an underlying sensitivity of the STN microcircuit to beta-frequency input. STN-neurons are selectively entrained to cortical beta oscillations in PD patients. Phase-locking of STN-neurons is linearly dependent on oscillation magnitude. Beta bursts in LFP/EEG are accompanied by transient synchronisation of STN spiking. STN neurons are selectively entrained to cortical beta stimulation in rats. Beta-selectivity of STN neurons is present in control and dopamine-depleted rats.
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影响因子:
4.3
作者:
Holt AB;Wilson D;Shinn M;Moehlis J;Netoff TI
通讯作者:
Netoff TI
DOI:
10.1002/cne.21881
发表时间:
2009-01-01
期刊:
The Journal of comparative neurology
影响因子:
--
作者:
Campbell P;Reep RL;Stoll ML;Ophir AG;Phelps SM
通讯作者:
Phelps SM
DOI:
10.1038/nrn3241
发表时间:
2012-05-18
期刊:
Nature reviews. Neuroscience
影响因子:
--
作者:
Buzsáki G;Anastassiou CA;Koch C
通讯作者:
Koch C
DOI:
10.1073/pnas.1517629112
发表时间:
2015-11-03
影响因子:
11.1
作者:
Feingold, Joseph;Gibson, Daniel J.;Graybiel, Ann M.
通讯作者:
Graybiel, Ann M.
影响因子:
16.2
作者:
Do, MTH;Bean, BP
通讯作者:
Bean, BP