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JMD : Journal of Movement Disorders



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Original Articles
N30 Somatosensory Evoked Potential Is Negatively Correlated with Motor Function in Parkinson’s Disease
Suk Yun Kang, Hyeo-Il Ma
J Mov Disord. 2016;9(1):35-39.   Published online January 25, 2016
  • 25,316 View
  • 87 Download
  • 4 Web of Science
  • 2 Crossref
AbstractAbstract PDF
aaThe aim of this study was to investigate frontal N30 status in Parkinson’s disease (PD) and to examine the correlation between the amplitude of frontal N30 and the severity of motor deficits.
aaThe frontal N30 was compared between 17 PD patients and 18 healthy volunteers. Correlations between the amplitude of frontal N30 and the Unified Parkinson’s Disease Rating Scale (UPDRS) motor score of the more severely affected side was examined.
aaThe mean latency of the N30 was not significantly different between patients and healthy volunteers (p = 0.981), but the mean amplitude was lower in PD patients (p < 0.025). There was a significant negative correlation between the amplitude of N30 and the UPDRS motor score (r = -0.715, p = 0.013).
The frontal N30 status indicates the motor severity of PD. It can be a useful biomarker reflecting dopaminergic deficits and an objective measurement for monitoring the clinical severity of PD.


Citations to this article as recorded by  
  • Clinical factors affecting evoked magnetic fields in patients with Parkinson's disease
    Ryoji Naganuma, Ichiro Yabe, Megumi Takeuchi, Kirari Morishita, Shingo Nakane, Ryoken Takase, Ikuko Takahashi-Iwata, Masaaki Matsushima, Mika Otsuki, Hideaki Shiraishi, Hidenao Sasaki, Wing-ho Yung
    PLOS ONE.2020; 15(9): e0232808.     CrossRef
  • Short-Term Effects of Thoracic Spine Manipulation on the Biomechanical Organisation of Gait Initiation: A Randomized Pilot Study
    Sébastien Ditcharles, Eric Yiou, Arnaud Delafontaine, Alain Hamaoui
    Frontiers in Human Neuroscience.2017;[Epub]     CrossRef
Reorganization of the Human Somatosensory Cortex in Hand Dystonia
Maria Jose Catalan, Kenji Ishii, William Bara-Jimenez, Mark Hallett
J Mov Disord. 2012;5(1):5-8.
  • 8,770 View
  • 55 Download
  • 2 Crossref
AbstractAbstract PDF
Background and Purpose:

Abnormalities of finger representations in the somatosensory cortex have been identified in patients with focal hand dystonia. Measuring blood flow with positron emission tomography (PET) can be use to demonstrate functional localization of receptive fields.


A vibratory stimulus was applied to the right thumb and little finger of six healthy volunteers and six patients with focal hand dystonia to map their receptive fields using H215O PET.


The cortical finger representations in the primary somatosensory cortex were closer to each other in patients than in normal subjects. No abnormalities were found in secondary somatosensory cortex, but the somatotopy there is less well distinguished.


These data confirm prior electrophysiological and functional neuroimaging observations showing abnormalities of finger representations in somatosensory cortex of patients with focal hand dystonia.


Citations to this article as recorded by  
  • Laminar VASO fMRI in focal hand dystonia patients
    Laurentius Huber, Panagiotis Kassavetis, Omer Faruk Gulban, Mark Hallett, Silvina G. Horovitz
    Dystonia.2023;[Epub]     CrossRef
  • Sensory Alterations in Patients with Isolated Idiopathic Dystonia: An Exploratory Quantitative Sensory Testing Analysis
    Lejla Paracka, Florian Wegner, Christian Blahak, Mahmoud Abdallat, Assel Saryyeva, Dirk Dressler, Matthias Karst, Joachim K. Krauss
    Frontiers in Neurology.2017;[Epub]     CrossRef

JMD : Journal of Movement Disorders