Abstract:
:Motor symptoms are defining traits in the diagnosis of Parkinson's disease (PD). A crucial component in motor function is the integration of afferent proprioceptive sensory feedback. Previous studies have indicated abnormal movement-related cortical oscillatory activity in PD, but the role of the proprioceptive afference on abnormal oscillatory activity in PD has not been elucidated. We examine the cortical oscillations in the mu/beta-band (8-30 Hz) in the processing of proprioceptive stimulation in PD patients, ON/OFF levodopa medication, as compared to that of healthy controls (HC). We used a proprioceptive stimulator that generated precisely controlled passive movements of the index finger and measured the induced cortical oscillatory responses following the proprioceptive stimulation using magnetoencephalography. Both PD patients and HC showed a typical beta-band desynchronization during the passive movement. However, the subsequent beta rebound after the passive movement that was almost absent in PD patients compared to HC. Furthermore, we found no difference in the degree of beta rebound attenuation between patients ON and OFF levodopa medication. The results demonstrate a disease-related deterioration in cortical processing of proprioceptive afference in PD.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Vinding MC,Tsitsi P,Piitulainen H,Waldthaler J,Jousmäki V,Ingvar M,Svenningsson P,Lundqvist Ddoi
10.1038/s41598-019-39204-3subject
Has Abstractpub_date
2019-02-22 00:00:00pages
2604issue
1issn
2045-2322pii
10.1038/s41598-019-39204-3journal_volume
9pub_type
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