rTMS affects working memory performance, brain activation and functional connectivity in patients with multiple sclerosis

被引:54
|
作者
Hulst, H. E. [1 ]
Goldschmidt, T. [1 ]
Nitsche, M. A. [2 ,3 ]
de Wit, S. J. [4 ]
van den Heuvel, O. A. [1 ,4 ]
Barkhof, F. [5 ]
Paulus, W. [6 ,7 ,8 ]
van der Werf, Y. D. [1 ]
Geurts, J. J. G. [1 ]
机构
[1] Vrije Univ Amsterdam, Med Ctr, Dept Anat & Neurosci, Sect Clin Neurosci,VUmc MS Ctr Amsterdam,Amsterda, Amsterdam, Netherlands
[2] Leibniz Res Ctr Working Environm & Human Factors, Dortmund, Germany
[3] Univ Med Hosp Bergmannsheil, Dept Neurol, Bochum, Germany
[4] Vrije Univ Amsterdam, Med Ctr, Amsterdam Neurosci, Dept Psychiat, Amsterdam, Netherlands
[5] Vrije Univ Amsterdam, Med Ctr, Dept Radiol & Nucl Med, VUmc MS Ctr Amsterdam,Amsterdam Neurosci, Amsterdam, Netherlands
[6] Univ Gottingen, Dept Clin Neurophysiol, Gottingen, Germany
[7] UCL, Inst Neurol, London, England
[8] UCL, Inst Healthcare Engn, London, England
来源
JOURNAL OF NEUROLOGY NEUROSURGERY AND PSYCHIATRY | 2017年 / 88卷 / 05期
关键词
TRANSCRANIAL MAGNETIC STIMULATION; COGNITIVE FUNCTION; PREFRONTAL CORTEX; FMRI; IMPAIRMENT; PLASTICITY; ATTENTION; TASKS;
D O I
10.1136/jnnp-2016-314224
中图分类号
R74 [神经病学与精神病学];
学科分类号
摘要
Objective To investigate the effects of high-frequency repetitive transcranial magnetic stimulation (rTMS) of the right dorsolateral prefrontal cortex (DLPFC) on working memory performance, while measuring task-related brain activation and task-related brain connectivity in patients with multiple sclerosis (MS). Methods 17 patients with MS and 11 healthy controls (HCs) underwent 3 experimental sessions (baseline, realrTMS, sham-rTMS), all including an N-back task (3 task loads: N1, N2, N3; control condition: N0) inside the MR scanner. Prior to imaging, real-rTMS (10 Hz) was applied to the right DLPFC. The stimulation site was defined based on individually assessed N-back task activation at baseline and located using neuronavigation. Changes in whole brain functional activation and functional connectivity with the right DLPFC were calculated. Results N-back task accuracy (N2 and N3) improved after real-rTMS (and not after sham-rTMS) compared with baseline (p= 0.029 and p= 0.015, respectively), only in patients. At baseline, patients with MS, compared with HCs, showed higher task-related frontal activation (left DLPFC, N2>N0), which disappeared after real-rTMS. Task-related (N1>N0) functional connectivity between the right DLPFC and the right caudate nucleus and bilateral (para) cingulate gyrus increased in patients after real-rTMS when compared with sham stimulation. Conclusions In patients with MS, N-back accuracy improved while frontal hyperactivation (seen at baseline relative to HCs) disappeared after real-rTMS. Together with the changes in functional connectivity after realrTMS in patients, these findings may represent an rTMSinduced change in network efficiency in patients with MS, shifting patients' brain function towards the healthy situation. This implicates a potentially relevant role for rTMS in cognitive rehabilitation in MS.
引用
收藏
页码:386 / 394
页数:9
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