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Ryoichi Okiyama

Observed names: Okiyama Ryoichi, R Okiyama, R. Okiyama, Ryoich Okiyama, Ryoichi OKIYAMA
Observed institutions: National Institute of Occupational Safety and Health, Tokyo Metropolitan Neurological Hospital, Kanto Central Hospital, National Eye Institute, Musashino Red Cross Hospital, Kobe University, The University of Tokyo, Teikyo University
ORCID: 0000-0001-6073-7897
Observed ORCID: 0000-0001-6073-7897
OpenAlex ID: A5049805196
A clinical and genetic study in a large cohort of patients with spinocerebellar ataxia type 6
2004 · Hiroki Takahashi, Kinya Ishikawa, et al. · Journal of Human Genetics · 98
Effects of STN stimulation on the initiation and inhibition of saccade in Parkinson disease
2010 · A. Yugeta, Y. Terao, et al. · Neurology · 87
Unilateral spatial neglect in AD: Significance of line bisection performance
2000 · S. Ishiai, Y. Koyama, et al. · Neurology · 42
Mechanisms of unilateral STN-DBS in patients with Parkinson’s disease: A PET study
2008 · N. Arai, F. Yokochi, et al. · Journal of Neurology · 39
Bilateral coherence between motor cortices and subthalamic nuclei in patients with Parkinson’s disease
2014 · Kenji Kato, Fusako Yokochi, et al. · Clinical Neurophysiology · 34
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Effects of cueing on visuospatial processing in unilateral spatial neglect
1995 · Sumio Ishiai, Keiko Seki, et al. · Journal of Neurology · 34
Resting-State Pallidal-Cortical Oscillatory Couplings in Patients With Predominant Phasic and Tonic Dystonia
2018 · Fusako Yokochi, Kenji Kato, et al. · Frontiers in Neurology · 30
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PLA2G6 variants associated with the number of affected alleles in Parkinson’s disease in Japan
2020 · Kensuke Daida, Kenya Nishioka, et al. · Neurobiology of Aging · 19
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Unilateral spatial neglect in Alzheimer's disease A line bisection study
2009 · S. Ishiai, R. Okiyama, et al. · Acta Neurologica Scandinavica · 18
Frequency-Specific Synchronization in the Bilateral Subthalamic Nuclei Depending on Voluntary Muscle Contraction and Relaxation in Patients with Parkinson’s Disease
2016 · Kenji Kato, Fusako Yokochi, et al. · Frontiers in Human Neuroscience · 17
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Microelectrode findings and topographic reorganisation of kinaesthetic cells after gamma knife thalamotomy
2008 · T. Terao, F. Yokochi, et al. · Acta Neurochirurgica · 16
An Asian Patient with Myoclonus-Dystonia (DYT11) Responsive to Deep Brain Stimulation of the Globus Pallidus Internus
2014 · Akinori Uruha, Katsuo Kimura, et al. · Case Reports in Neurological Medicine · 15
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Bilateral Effects of Unilateral Pallidothalamic Tractotomy Using Focused Ultrasound in Parkinson's Disease
2025 · Jun Ikezawa, Fusako Yokochi, et al. · Movement Disorders · 14
Degeneration of nigrostriatal dopaminergic neurons in the early to intermediate stage of dementia with Lewy bodies and Parkinson's disease
2023 · Masato Okitsu, Keizo Sugaya, et al. · Journal of the Neurological Sciences · 13
[An autopsy case of panencephalopathic type of Creutzfeldt-Jakob disease: an early clinical sign documented by magnetic resonance imaging].
1989 · R Okiyama, K Tsuchiya, et al. · PubMed · 11
Mononeuropathy Multiplex with Ulcerative Colitis.
1993 · Ryoichi OKIYAMA, Masahito YAMADA, et al. · Internal Medicine · 10
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[Unilateral subthalamic stimulation for early-stage Parkinson's disease].
2005 · Takao Shichi, Ryoichi Okiyama, et al. · PubMed · 9
[A guideline for the treatment of Parkinson's disease].
2002 · Yoshikuni Miziuno, Yasuyuki Okuma, et al. · PubMed · 9
Is Generalized and Segmental Dystonia Accompanied by Impairments in the Dopaminergic System?
2021 · Jun Ikezawa, Fusako Yokochi, et al. · Frontiers in Neurology · 8
Therapeutic Effects of Quetiapine and 5-HT1A Receptor Agonism on Hyperactivity in Dopamine-Deficient Mice
2022 · Yukiko Ochiai, Masayo Fujita, et al. · International Journal of Molecular Sciences · 7
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Relationship between lesion location and the outcome of pallidotomy for Parkinson's disease
2001 · Fusako Yokochi, Ryoichi Okiyama, et al. · Journal of Neurology · 7
[An unusual autopsy case of corticobasal degeneration--with special reference to clinicopathological differentiation from progressive supranuclear palsy and slowly progressive aphasia].
1996 · K Tsuchiya, K Ikeda, et al. · PubMed · 7
Bereitschaftspotential preceding voluntary saccades is abnormal in patients with Parkinson's disease.
1993 · N Shimizu, R Okiyama · PubMed · 7
Deep brain stimulation for patients with dystonia in Machado–Joseph disease: three case reports
2023 · Jun Ikezawa, Fusako Yokochi, et al. · Journal of Neurology · 6
Topographic anatomy of the subthalamic nucleus localized by high-resolution human brain atlas superimposing digital images of cross-sectioned surfaces and histological images of microscopic sections from frozen cadaveric brains
2018 · Takashi Kawasaki, Masahiro Shin, et al. · Journal of Clinical Neuroscience · 6
Works count: 63
Citation count: 603
H-index: 13
I10-index: 16
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