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Hiroshi Hayashi · SciRah

Researcher profile · Semantic Scholar

Hiroshi Hayashi

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Hiroshi Hayashi — researcher profile on SciRah

h-index: 12
Works: 57
Citations: 416

Most-cited papers

Paroxetine treatment of delusional disorder, somatic type
Hiroshi Hayashi, Shingo Oshino, J. Ishikawa, S. Kawakatsu +1 more
2004Human psychopharmacology57 citations
Semantic Scholar
Typical and atypical appearance of early‐onset Alzheimer's disease: A clinical, neuroimaging and neuropathological study
S. Kawakatsu, R. Kobayashi, Hiroshi Hayashi
2017Neuropathology (Kyoto. 1993)30 citations
Semantic Scholar
[18F]THK-5351 PET imaging in early-stage semantic variant primary progressive aphasia: a report of two cases and a literature review
R. Kobayashi, Hiroshi Hayashi, S. Kawakatsu, Aiko Ishiki +3 more
2018BMC Neurology19 citations Open access
Semantic Scholar
Sulpiride treatment of Cotard's syndrome in schizophrenia.
Hiroaki Shiraishi, Masanao Ito, Hiroshi Hayashi, K. Otani
2004Progress in Neuro-psychopharmacology and Biological Psychiatry19 citations
Semantic Scholar
Application of the VSRAD, a Specific and Sensitive Voxel-Based Morphometry, to Comparison of Entorhinal Cortex Atrophy between Dementia with Lewy Bodies and Alzheimer’s Disease
Hiroshi Hayashi, S. Kawakatsu, A. Suzuki, Yuzuru Shibuya +3 more
2012Dementia and Geriatric Cognitive Disorders18 citations
Semantic Scholar
Successful treatment by paroxetine of delusional disorder, somatic type, accompanied by severe secondary depression.
Hiroshi Hayashi, Takaki Akahane, Haruyoshi Suzuki, T. Sasaki +2 more
2010Clinical neuropharmacology18 citations
Semantic Scholar
Differentiation Between Dementia With Lewy Bodies And Alzheimer’s Disease Using Voxel-Based Morphometry Of Structural MRI: A Multicenter Study
H. Matsuda, Kota Yokoyama, N. Sato, K. Ito +17 more
2019Neuropsychiatric Disease and Treatment17 citations Open access
Semantic Scholar
Comparison of entorhinal cortex atrophy between early‐onset and late‐onset Alzheimer's disease using the VSRAD, a specific and sensitive voxel‐based morphometry
Yuzuru Shibuya, S. Kawakatsu, Hiroshi Hayashi, R. Kobayashi +3 more
2013International Journal of Geriatric Psychiatry17 citations
Semantic Scholar
Utility of Easy Z-Score Imaging System-Assisted SPECT in Detecting Onset Age-Dependent Decreases in Cerebral Blood Flow in the Posterior Cingulate Cortex, Precuneus, and Parietal Lobe in Alzheimer's Disease with Amyloid Accumulation
Hiroshi Hayashi, R. Kobayashi, S. Kawakatsu, Daichi Morioka +1 more
2020Dementia and Geriatric Cognitive Disorders Extra14 citations Open access
Semantic Scholar
Extremely grotesque somatic delusions in a patient of delusional disorder and its response to risperidone treatment.
Takaki Akahane, Hiroshi Hayashi, Haruyoshi Suzuki, S. Kawakatsu +1 more
2009General Hospital Psychiatry14 citations
Semantic Scholar
Malignant catatonia with severe bronchorrhea and its response to electroconvulsive therapy.
Hiroshi Hayashi, T. Aoshima, K. Otani
2006Progress in Neuro-psychopharmacology and Biological Psychiatry14 citations
Semantic Scholar
Expanding the phenotypic spectrum of ARCN1-related syndrome
Alyssa L. Ritter, J. Gold, Hiroshi Hayashi, Amanda M. Ackermann +38 more
2022Genetics in Medicine12 citations Open access
Semantic Scholar
Comparison of the decreases in regional cerebral blood flow in the posterior cingulate cortex, precuneus, and parietal lobe between suspected non‐Alzheimer's disease pathophysiology and Alzheimer's disease
Hiroshi Hayashi, R. Kobayashi, S. Kawakatsu, Makoto Ohba +2 more
2021Psychogeriatrics12 citations
Semantic Scholar
Clinicopathological heterogeneity of Alzheimer's disease with pure Alzheimer's disease pathology: Cases associated with dementia with Lewy bodies, very early‐onset dementia, and primary progressive aphasia
S. Kawakatsu, R. Kobayashi, Hiroshi Hayashi, Daichi Morioka +4 more
2021Neuropathology (Kyoto. 1993)12 citations
Semantic Scholar
Recognition of the coronavirus disease 2019 pandemic and face mask wearing in patients with Alzheimer's disease: an investigation at a medical centre for dementia in Japan
R. Kobayashi, Hiroshi Hayashi, S. Kawakatsu, Daichi Morioka +3 more
2020Psychogeriatrics11 citations Open access
Semantic Scholar
Bromocriptine augmentation therapy in a patient with Cotard's syndrome.
S. Kondo, Hiroshi Hayashi, T. Eguchi, Takanobu Oyama +2 more
2003Progress in Neuro-psychopharmacology and Biological Psychiatry11 citations
Semantic Scholar
Globular glial tauopathy Type II: Clinicopathological study of two autopsy cases
Hidetomo Tanaka, S. Kawakatsu, Y. Toyoshima, T. Miura +10 more
2019Neuropathology (Kyoto. 1993)10 citations
Semantic Scholar
Effects of computerized cognitive training on biomarker responses in older adults with mild cognitive impairment: A scoping review
Hiroshi Hayashi, Toshimasa Sone, Kazuaki Iokawa, Koshi Sumigawa +6 more
2024Health Science Reports8 citations Open access
Semantic Scholar
Clinicopathological diversity of semantic dementia: Comparisons of patients with early‐onset versus late‐onset, left‐sided versus right‐sided temporal atrophy, and TDP‐type A versus type C pathology
S. Kawakatsu, R. Kobayashi, Daichi Morioka, Hiroshi Hayashi +5 more
2022Neuropathology (Kyoto. 1993)8 citations
Semantic Scholar
Catatonia as the Initial Manifestation of Dementia with Lewy Bodies
Yusuke Saito, Keisuke Noto, R. Kobayashi, A. Suzuki +3 more
2021The American journal of case reports8 citations Open access
Semantic Scholar
Familial dementia with Lewy bodies with VPS13C mutations.
R. Kobayashi, H. Naruse, Shingo Koyama, S. Kawakatsu +7 more
2020Parkinsonism & Related Disorders8 citations
Semantic Scholar
Assessment of Amyloid Deposition in Patients With Probable REM Sleep Behavior Disorder as a Prodromal Symptom of Dementia With Lewy Bodies Using PiB-PET
R. Kobayashi, Hiroshi Hayashi, S. Kawakatsu, N. Okamura +2 more
2019Frontiers in Neurology7 citations Open access
Semantic Scholar
Neuroleptic malignant syndrome complicated by massive intestinal bleeding in a patient with chronic renal failure.
Hiroshi Hayashi, S. Kawakatsu, Kyota Watanabe, T. Fukasawa +1 more
2002Progress in Neuro-psychopharmacology and Biological Psychiatry6 citations
Semantic Scholar
Fluctuation of dopamine transporter availability in psychiatric‐onset dementia with Lewy bodies: the dilemma of treatment with antidepressants
R. Kobayashi, S. Kawakatsu, Daichi Morioka, Hiroshi Hayashi +1 more
2023Psychogeriatrics5 citations
Semantic Scholar
Clonazepam‐induced misidentification in prodromal dementia with Lewy bodies
Daichi Morioka, R. Kobayashi, Hiroshi Hayashi, S. Kawakatsu +1 more
2022Psychogeriatrics5 citations
Semantic Scholar
Neuroleptic malignant syndrome following quetiapine treatment in a patient with dementia with Lewy bodies.
R. Kobayashi, Y. Matsumoto, Hiroshi Hayashi, A. Suzuki +1 more
2017Asian Journal of Psychiatry5 citations
Semantic Scholar
Effects of Electronic Sports on Community‐Dwelling Older Adults With Mild Cognitive Impairment: A Randomized Controlled Study
Hiroshi Hayashi, Toshimasa Sone, Kazuaki Iokawa, Akihiko Asao +7 more
2026Geriatrics & Gerontology International4 citations
Semantic Scholar
Limbic‐predominant age‐related TDP‐43 encephalopathy characterised by frontotemporal dementia‐like behavioural symptoms
R. Kobayashi, S. Kawakatsu, Daichi Morioka, Hiroshi Hayashi +3 more
2022Psychogeriatrics4 citations
Semantic Scholar
Comparing Medial Temporal Atrophy Between Early-Onset Semantic Dementia and Early-Onset Alzheimer's Disease Using Voxel-Based Morphometry: A Multicenter MRI Study.
R. Kobayashi, Hiroshi Hayashi, S. Kawakatsu, Yuzuru Shibuya +6 more
2022Current Alzheimer Research4 citations
Semantic Scholar
Comparison of Alzheimer’s disease patients and healthy controls in the easy Z-score imaging system with differential image reconstruction methods using SPECT/CT: verification using normal database of our institution
Makoto Ohba, R. Kobayashi, Kazukuni Kirii, Kyosuke Fujita +6 more
2021Annals of Nuclear Medicine4 citations
Semantic Scholar
Detection of reduced dopamine transporter availability by 123I‐N‐omega‐fluoropropyl‐2‐beta‐carbomethoxy‐3‐beta (4‐iodophenyl) nortropane single‐photon emission computed tomography in a patient of frontotemporal dementia with motor neuron disease
R. Kobayashi, Hiroshi Hayashi, S. Kawakatsu, Hiroki Nagasawa +3 more
2020Psychogeriatrics4 citations
Semantic Scholar
Suicide as a result of stereotypic behaviour in a case with semantic dementia
R. Kobayashi, Hiroshi Hayashi, Takaki Tokairin, S. Kawakatsu +1 more
2018Psychogeriatrics4 citations
Semantic Scholar
Capgras syndrome occurring in lithium toxicity.
Hiroki Nagasawa, Hiroshi Hayashi, K. Otani
2012Clinical neuropharmacology4 citations
Semantic Scholar
Malignant catatonia and neuroleptic malignant syndrome: Revisited
K. Otani, Hiroshi Hayashi, A. Suzuki, T. Aoshima
20064 citations
Semantic Scholar
[Factors related to survival rate, and life satisfaction in stroke patients in Yamagata Prefecture, Japan].
Hiroshi Hayashi, T. Ahiko, S. Yasumura
1995Nihon Koshu Eisei Zasshi (Japanese Journal of Public Health)3 citations
Semantic Scholar
Impact of Neuropsychiatric Symptoms on Caregiver Burden of People With Dementia With Lewy Bodies: A Multicentre Prospective Longitudinal Study
Hiroshi Hayashi, R. Kobayashi, Yuzuru Shibuya, Satomi Aso +7 more
2025Psychogeriatrics2 citations
Semantic Scholar
Association Between Shopping Assistance and Functional Decline in Older Residents with Support Levels Under the Long-Term Care Insurance System in Japan: A Retrospective, Cross-Sectional Study
Akihiko Asao, Toshimasa Sone, Takaaki Fujita, Hiroshi Hayashi +8 more
2024Geriatrics2 citations
Semantic Scholar
Improvement of Somatic Delusions with Altered Regional Cerebral Blood Flow Following Electroconvulsive Therapy in a Patient with Schizoaffective Disorder
Hiroshi Hayashi, R. Kobayashi, Daichi Morioka, Yusuke Saito +2 more
2021The American journal of case reports2 citations Open access
Semantic Scholar
Long-term specificity and stability of somatic delusions in delusional disorder, somatic type
Yuzuru Shibuya, Hiroshi Hayashi, A. Suzuki, K. Otani
2012Acta Neuropsychiatrica2 citations
Semantic Scholar
Delusion of Reduplication of Tongue Accompanied by Dangerous Self-Treatments in a Patient with Alzheimer's Disease
Hiroshi Hayashi, A. Suzuki, Y. Matsumoto, K. Otani
2011Australian and New Zealand journal of psychiatry (Print)2 citations
Semantic Scholar
A Comparison between Peripheral and Central origin in elderly Patients with vestibular vertigo by using Magnetic Resonance Angiography and single photon emission computed tomography using I-123 iodoamphetamine
Motohiro Arai, A. Higuchi, Tadanari Itoh, Yasuhiko Mochimatu +2 more
20012 citations Open access
Semantic Scholar
Screening for Pre-Frailty Using Phase Angle Derived from Bioelectrical Impedance Analysis in Community-Dwelling Older Adults
Masayuki Hoshi, T. Ogata, Maaya Chiguchi, Ayane Nakamaru +10 more
2026Geriatrics1 citations
Semantic Scholar
Simple and Objective Evaluation Items for the Prognosis and Mortality of Delirium in Real‐World Clinical Practice: A Preliminary Retrospective Study
Yuzuru Shibuya, R. Kobayashi, Takuma Numazawa, Toyoki Toyoshima +5 more
2023Psychiatric Research and Clinical Practice1 citations Open access
Semantic Scholar
Phenoconversion from rapid eye movement sleep behaviour disorder to multiple system atrophy is predicted by abnormal dopamine transporter imaging combined with normal 123I‐metaiodobenzylguanidine myocardial scintigraphy: a case report
R. Kobayashi, Hiroshi Hayashi, S. Kawakatsu, Daichi Morioka +3 more
2020Psychogeriatrics1 citations
Semantic Scholar
Thought visualization occurring in a patient of dementia with Lewy bodies.
R. Kobayashi, Daichi Morioka, Hiroshi Hayashi, A. Suzuki +1 more
2019Asian Journal of Psychiatry1 citations
Semantic Scholar
Association of adjustability of grasping force in dominant and nondominant hands with physical and cognitive function in community-dwelling older adults: a cross-sectional study
J. Yabuki, Shoji Yabuki, Kazuaki Iokawa, Hiroshi Hayashi +6 more
2026BMC Geriatrics0 citations Open access
Semantic Scholar
Association Between Smartphone-Based IMU Turning Performance and Screening-Defined Mild Cognitive Impairment in Older Adults
Masayuki Hoshi, Koei Ishida, Ayane Nakamaru, Yuu Okabe +10 more
2026Italian National Conference on Sensors0 citations Open access
Semantic Scholar
Association Between Phase Angle and AWGS 2025-Defined Sarcopenia in Community-Dwelling Older Adults
Masayuki Hoshi, Yui Miyazaki, T. Ogata, Koei Ishida +14 more
2026Healthcare0 citations Open access
Semantic Scholar
Whole-brain histogram analysis and top 20% gray and white matter ratio of amyloid positron emission tomography: A comparison with the centiloid scale
R. Yamakuni, Shinya Seino, Anna Yamaki, Atsushi Shima +91 more
2026Annals of Nuclear Medicine0 citations Open access
Semantic Scholar
Daytime assessment of attention and orientation is associated with clinical outcomes in patients with delirium: A prospective observational study.
Yuzuru Shibuya, R. Kobayashi, Toyoki Toyoshima, M. Kaga +8 more
2026General Hospital Psychiatry0 citations Open access
Semantic Scholar

Frequent co-authors

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S. Kawakatsu×30
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S. Kawakatsu — researcher profile on SciRah
K. Otani×27
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K. Otani — researcher profile on SciRah
R. Kobayashi×27
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R. Kobayashi — researcher profile on SciRah
Toshimasa Sone×10
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Toshimasa Sone — researcher profile on SciRah

×9

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Daichi Morioka — researcher profile on SciRah

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A. Suzuki — researcher profile on SciRah

Yuzuru Shibuya×7

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Yuzuru Shibuya — researcher profile on SciRah

Daichi Morioka×7

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Daichi Morioka — researcher profile on SciRah

Kazuaki Iokawa×6

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Kazuaki Iokawa — researcher profile on SciRah

Akihiko Asao×6

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Akihiko Asao — researcher profile on SciRah

Maki Ogasawara×6

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Maki Ogasawara — researcher profile on SciRah

Koichi Otani×5

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Koichi Otani — researcher profile on SciRah