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Yohei Okada 2 Articles
Transcranial Direct Current Stimulation Combined with Action Observation and Electromyographic Biofeedback Training in a Patient with Writer’s Cramp
Yohei Okada, Chiharu Shibamoto, Yukari Osumi, Chihiro Asano, Riho Takeuchi, Sachio Nabeshima, Shu Morioka, Koji Shomoto
J Mov Disord. 2018;11(2):82-86.   Published online May 30, 2018
  • 9,146 View
  • 87 Download
  • 5 Web of Science
  • 5 Crossref
AbstractAbstract PDFSupplementary Material
We present a 47-year-old right-handed woman with a 15-year history of writer’s cramp who was provided with six sessions of cathodal transcranial direct current stimulation (tDCS) combined with observation of writing actions performed by a healthy subject and electromyographic (EMG) biofeedback training to decrease EMG activities in her right forehand muscles while writing for 30 min for 4 weeks. She showed improvement in dystonic posture and writing speed after the intervention. The writing movement and writing speed scores on a writer’s cramp rating scale decreased, along with writing time. Our findings demonstrated that cathodal tDCS combined with action observation and EMG biofeedback training might improve dystonic writing movements in a patient with writer’s cramp.


Citations to this article as recorded by  
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    Jordan Morrison-Ham, Gillian M. Clark, Elizabeth G. Ellis, Andris Cerins, Juho Joutsa, Peter G. Enticott, Daniel T. Corp
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  • New modalities and directions for dystonia care
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    Journal of Neural Transmission.2021; 128(4): 559.     CrossRef
  • The Mini-BESTest is an independent predictor of falls in Parkinson Disease
    Larissa Karlla Rodrigues Lopes, Aline Alvim Scianni, Lidiane Oliveira Lima, Raquel de Carvalho Lana, Fátima Rodrigues-De-Paula
    Brazilian Journal of Physical Therapy.2020; 24(5): 433.     CrossRef
  • Modulating Observation-Execution-Related Motor Cortex Activity by Cathodal Transcranial Direct Current Stimulation
    Fengxue Qi, Michael A. Nitsche, Volker R. Zschorlich
    Brain Sciences.2019; 9(5): 121.     CrossRef
  • Beyond the target area: an integrative view of tDCS-induced motor cortex modulation in patients and athletes
    Edgard Morya, Kátia Monte-Silva, Marom Bikson, Zeinab Esmaeilpour, Claudinei Eduardo Biazoli, Andre Fonseca, Tommaso Bocci, Faranak Farzan, Raaj Chatterjee, Jeffrey M. Hausdorff, Daniel Gomes da Silva Machado, André Russowsky Brunoni, Eva Mezger, Luciane
    Journal of NeuroEngineering and Rehabilitation.2019;[Epub]     CrossRef
Can Postural Instability Respond to Galvanic Vestibular Stimulation in Patients with Parkinson’s Disease?
Hiroshi Kataoka, Yohei Okada, Takao Kiriyama, Yorihiro Kita, Junji Nakamura, Shu Morioka, Koji Shomoto, Satoshi Ueno
J Mov Disord. 2016;9(1):40-43.   Published online December 3, 2015
  • 22,866 View
  • 196 Download
  • 34 Crossref
AbstractAbstract PDFSupplementary Material
Galvanic vestibular stimulation (GVS) activates the vestibular afferents, and these changes in vestibular input exert a strong influence on the subject’s posture or standing balance. In patients with Parkinson’s disease (PD), vestibular dysfunction might contribute to postural instability and gait disorders.
Current intensity was increased to 0.7 mA, and the current was applied to the patients for 20 minutes. To perform a sham stimulation, the current intensity was increased as described and then decreased to 0 mA over the course of 10 seconds. The patient’s status was recorded continuously for 20 minutes with the patient in the supine position.
Three out of 5 patients diagnosed with PD with postural instability and/or abnormal axial posture showed a reduction in postural instability after GVS. The score for item 12 of the revised Unified Parkinson’s Disease Rating Scale part 3 was decreased in these patients.
The mechanism of postural instability is complex and not completely understood. In 2 out of the 5 patients, postural instability was not changed in response to GVS. Nonetheless, the GVS-induced change in postural instability for 3 patients in our study suggests that GVS might be a therapeutic option for postural instability.


Citations to this article as recorded by  
  • Vestibular dysfunction in Parkinson’s disease: a neglected topic
    Meilin Gui, Lingling Lv, Lixia Qin, Chunyu Wang
    Frontiers in Neurology.2024;[Epub]     CrossRef
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    Dennis Q. Truong, Alexander Guillen, Mujda Nooristani, Maxime Maheu, Francois Champoux, Abhishek Datta, Mohammad Ali Salehinejad
    PLOS ONE.2023; 18(2): e0273883.     CrossRef
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    Teris Cheung, Joyce Yuen Ting Lam, Kwan Hin Fong, Yuen Shan Ho, Alex Ho, Calvin Pak-Wing Cheng, Julie Sittlington, Yu-Tao Xiang, Tim Man Ho Li
    International Journal of Environmental Research and Public Health.2023; 20(5): 4218.     CrossRef
  • Acceptability and feasibility of a vestibular nerve stimulation headset protocol in children with cerebral palsy
    Karen McConnell, Daniel Topley, Jason McKeown, Claire Kerr
    BMC Pediatrics.2022;[Epub]     CrossRef
  • Effect of galvanic vestibular stimulation on axial symptoms in Parkinson’s disease
    Hiroshi Kataoka, Yohei Okada, Takao Kiriyama, Yorihiro Kita, Junji Nakamura, Koji Shomoto, Kazuma Sugie
    Journal of Central Nervous System Disease.2022; 14: 117957352210815.     CrossRef
  • Galvanic vestibular stimulation and its applications: a systematic review
    Anna Paula Batista de Ávila Pires, Tatiana Rocha Silva, Maíra Soares Torres, Maria Luiza Diniz, Maurício Campelo Tavares, Denise Utsch Gonçalves
    Brazilian Journal of Otorhinolaryngology.2022; 88: S202.     CrossRef
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    Yao Guo, Jianxin Yang, Yuxuan Liu, Xun Chen, Guang-Zhong Yang
    Frontiers in Aging Neuroscience.2022;[Epub]     CrossRef
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    Asian Journal of Pharmaceutical and Clinical Research.2022; : 84.     CrossRef
    International Journal of Pharmacy and Pharmaceutical Sciences.2022; : 46.     CrossRef
  • The effect of galvanic vestibular stimulation on postural balance in Parkinson's disease: A systematic review and meta-analysis
    Mohammad Mahmud, Zaeem Hadi, Mabel Prendergast, Matteo Ciocca, Abdel Rahman Saad, Yuscah Pondeca, Yen Tai, Gregory Scott, Barry M. Seemungal
    Journal of the Neurological Sciences.2022; 442: 120414.     CrossRef
  • A systematic review of vestibular stimulation in cerebral palsy
    Daniel Topley, Karen McConnell, Claire Kerr
    Disability and Rehabilitation.2021; 43(23): 3291.     CrossRef
  • The link between lateral trunk flexion in Parkinson’s disease and vestibular dysfunction: a clinical study
    Haiyan Tang, You Chen, Zhidong Cen, Zhiyuan Ouyang, Danning Lou, Ying Tan, Wei Luo
    International Journal of Neuroscience.2021; 131(6): 521.     CrossRef
  • Vestibular stimulation: a noninvasive brain stimulation in Parkinson’s disease & its implications
    Thanalakshmi Jagadeesan, Archana Rajagopal, Senthilkumar Sivanesan
    Journal of Complementary and Integrative Medicine.2021; 18(4): 657.     CrossRef
  • Current perspectives on galvanic vestibular stimulation in the treatment of Parkinson’s disease
    Soojin Lee, Aiping Liu, Martin J. McKeown
    Expert Review of Neurotherapeutics.2021; 21(4): 405.     CrossRef
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    David Wilkinson
    Expert Review of Medical Devices.2021; 18(7): 649.     CrossRef
  • Early balance impairment in Parkinson’s Disease: Evidence from Robot-assisted axial rotations
    Alessandro Zampogna, Ilaria Mileti, Francesca Martelli, Marco Paoloni, Zaccaria Del Prete, Eduardo Palermo, Antonio Suppa
    Clinical Neurophysiology.2021; 132(10): 2422.     CrossRef
  • Dizziness in Parkinson’s disease patients is associated with vestibular function
    Jeong-Ho Park, Suk Yun Kang
    Scientific Reports.2021;[Epub]     CrossRef
  • c-Fos Expression after Stochastic Vestibular Stimulation and Levodopa in 6-OHDA Hemilesioned Rats
    Ghazaleh Samoudi, Andrea Nilsson, Thomas Carlsson, Filip Bergquist
    Neuroscience.2020; 424: 146.     CrossRef
  • Sensory Neuromodulation
    Robert D. Black, Lesco L. Rogers
    Frontiers in Systems Neuroscience.2020;[Epub]     CrossRef
  • Efficacy of transmastoidal galvanic stimulation on recovery outcomes in patients with unilateral peripheral vestibular disorders: a randomized controlled trial
    Reham Ali Mohamed Ali Ahmed, Ebtesam Mohamed Fahmy, Amina Mohamed Awad, Mona Mohamed Hamdy, Hussein Ahmed Abd Rahman Shaker
    The Egyptian Journal of Neurology, Psychiatry and Neurosurgery.2020;[Epub]     CrossRef
  • Effect of caloric vestibular stimulation on brain neurochemicals in rotenone induced mouse model of Parkinson’s disease
    Sai Sailesh Kumar G, Srilatha Bashetti
    International Journal of Clinical Biochemistry and Research.2020; 7(1): 49.     CrossRef
  • The Effect of L-dopa on Postural Stability in Parkinson’s Disease Patients
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  • Receptor Ligands as Helping Hands to L-DOPA in the Treatment of Parkinson’s Disease
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    Audiology - Communication Research.2019;[Epub]     CrossRef
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  • Recent advancements in lateral trunk flexion in Parkinson disease
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  • Galvanic Vestibular Stimulation (GVS) Augments Deficient Pedunculopontine Nucleus (PPN) Connectivity in Mild Parkinson's Disease: fMRI Effects of Different Stimuli
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    Frontiers in Neuroscience.2018;[Epub]     CrossRef
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