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Spike and Local Field Synchronization Between the Pedunculopontine Nucleus and Primary Motor Cortex in a Rat Model of Parkinson's Disease.

Abstract：

:The pedunculopontine nucleus (PPN) shows altered electrophysiological and anatomic characteristics in Parkinson's disease (PD), but little is known about the effect of 6-hydroxydopamine (6-OHDA) lesion and levodopa (L-DOPA) therapy on the relationship between spike and local field potential (LFP) activities in the PPN and motor cortex. Aiming to investigate this, synchronous spike and LFP signals in the PPN and primary motor cortex (M1) were recorded. The spike-LFP relationship was evaluated using coherence analysis, phase-lock and spike-field coherence (SFC). The results suggested that 6-OHDA lesion had a significant effect on the spike-LFP relationship between the PPN and M1 in rats under a rest or locomotion state. The significantly altered frequency bands varied across different neuron types and animal activity states. In addition, the altered coherence values between PPN spike and M1 LFP were refractory to long-term L-DOPA therapy although all other changes could be reversed by this drug treatment. All results provided evidence of the spike-LFP relationship between the PPN and M1 in PD, revealing some network mechanisms of the cortico-basal ganglia circuitry and PPN, which might be an underlying candidate for PD pathophysiology and therapy.

journal_name

Neuroscience

journal_title

Neuroscience

authors

Geng X,Wang X,He F,Zhang X,Xie J,Gao G,Han H,Yao X,Zhang H,Gao Y,Wang Y,Wang M

doi

10.1016/j.neuroscience.2019.01.044

subject

Has Abstract

pub_date

2019-04-15 00:00:00

pages

470-483

eissn

0306-4522

issn

1873-7544

pii

S0306-4522(19)30071-5

journal_volume

404

pub_type

杂志文章

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