Pallidal stimulation in Parkinson disease differentially modulates local and network β activity

被引:23
作者
Malekmohammadi, Mahsa [1 ]
Shahriari, Yalda [2 ,4 ]
AuYong, Nicholas [1 ]
O'Keeffe, Andrew [1 ]
Bordelon, Yvette [3 ]
Hu, Xiao [4 ]
Pouratian, Nader [1 ,5 ]
机构
[1] Univ Calif Los Angeles, Dept Neurosurg, Los Angeles, CA 90095 USA
[2] Univ Rhode Isl, Dept Elect Comp & Biomed Engn, Kingston, RI 02881 USA
[3] Univ Calif Los Angeles, Dept Neurol, Los Angeles, CA 90024 USA
[4] Univ Calif San Francisco, Dept Physiol Nursing, San Francisco, CA 94143 USA
[5] UCLA Neurosurg, 300 Stein Plaza,Suite 562, Los Angeles, CA 90095 USA
关键词
Parkinson disease; deep brain stimulation; globus pallidus internus; beta oscillations; functional connectivity; DEEP-BRAIN-STIMULATION; HUMAN SUBTHALAMIC NUCLEUS; HIGH-FREQUENCY ACTIVITY; BASAL GANGLIA OUTPUT; PRIMARY MOTOR CORTEX; OSCILLATORY ACTIVITY; PATHOLOGICAL SYNCHRONIZATION; GLOBUS-PALLIDUS; MOVEMENT; CONNECTIVITY;
D O I
10.1088/1741-2552/aad0fb
中图分类号
R318 [生物医学工程];
学科分类号
0831 ;
摘要
beta hypersynchrony within the basal ganglia-thalamocortical (BGTC) network has been suggested as a hallmark of Parkinson disease (PD) pathophysiology. Subthalamic nucleus (STN)-DBS has been shown to alter cortical-subcortical synchronization. It is unclear whether this is a generalizable phenomenon of therapeutic stimulation across targets. Objectives. We aimed to evaluate whether DBS of the globus pallidus internus (GPi) results in cortical-subcortical desynchronization, despite the lack of monosynaptic connections between GPi and sensorimotor cortex. Approach. We recorded local field potentials from the GPi and electrocorticographic signals from the ipsilateral sensorimotor cortex, off medications in nine PD patients, undergoing DBS implantation. We analyzed both local oscillatory power and functional connectivity (coherence and debiased weighted phase lag index (dWPLI)) with and without stimulation while subjects were resting with eyes open. Main results. DBS significantly suppressed low beta power within the GPi (-26.98% +/- 15.14%), p < 0.05) without modulation of sensorimotor cortical beta power ( low or high). In contrast, stimulation suppressed pallidocortical high beta coherence (-38.89% +/- 6.19%, p = 0.02) and dWPLI (-61.40% +/- 8.75%, p = 0.02). Changes in cortical-subcortical functional connectivity were spatially specific to the motor cortex. Significance. We highlight the role of DBS in desynchronizing network activity, particularly in the high beta band. The current study of GPi-DBS suggests these network-level effects are not necessarily dependent and potentially may be independent of the hyperdirect pathway. Importantly, these results draw a sharp distinction between the potential significance of low beta oscillations locally within the basal ganglia and high beta oscillations across the BGTC motor circuit.
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页数:12
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