User profiles for Ryo Ochi

Ryo Ochi

Department of neuropsychiatry, Keio University School of Medicine
Verified email at keio.jp
Cited by 128

[HTML][HTML] Polygenic risk scores for major psychiatric and neurodevelopmental disorders contribute to sleep disturbance in childhood: Adolescent Brain Cognitive …

K Ohi, R Ochi, Y Noda, M Wada, S Sugiyama… - Translational …, 2021 - nature.com
Sleep disturbance is a common symptom of psychiatric and neurodevelopmental disorders
and, especially in childhood, can be a precursor to various mental disorders. However, the …

Investigating structural subdivisions of the anterior cingulate cortex in schizophrenia, with implications for treatment resistance and glutamatergic levels

R Ochi, E Plitman, R Patel, R Tarumi, Y Iwata… - Journal of Psychiatry and …, 2022 - jpn.ca
Background: Abnormalities in the anterior cingulate cortex (ACC) are thought to play an
important role in the pathophysiology of schizophrenia. Given regional variations in ACC …

White matter microstructural organizations in patients with severe treatment-resistant schizophrenia: a diffusion tensor imaging study

R Ochi, Y Noda, S Tsuchimoto, R Tarumi… - Progress in Neuro …, 2020 - Elsevier
Previous diffusion tensor imaging (DTI) studies have reported white matter alterations in
patients with schizophrenia. Notably, one third of this population does not respond to first-line …

Association between resilience and cortical thickness in the posterior cingulate cortex and the temporal pole in Japanese older people: A population-based cross …

…, S Nakajima, S Tsugawa, Y Mimura, R Ochi… - Journal of psychiatric …, 2021 - Elsevier
Background Resilience is a crucial factor preventing the onset of mental illness and contributing
to the well-being and healthy longevity, whose neural bases are not fully elucidated in …

Thalamic and striato-pallidal volumes in schizophrenia patients and individuals at risk for psychosis: a multi-atlas segmentation study

…, F Masuda, M Wada, S Kurose, R Ochi… - Schizophrenia …, 2022 - Elsevier
Despite previous neuroimaging studies demonstrating morphological abnormalities of the
thalamus and other subcortical structures in patients with schizophrenia, the potential role of …

[HTML][HTML] Patterns of functional connectivity alterations induced by alcohol reflect somatostatin interneuron expression in the human cerebral cortex

R Ochi, F Ueno, M Sakuma, H Tani, S Tsugawa… - Scientific reports, 2022 - nature.com
Acute alcohol administration affects functional connectivity, yet the underlying mechanism is
unknown. Previous work suggested that a moderate dose of alcohol reduces the activity of …

Approach‐oriented coping strategy level may be related to volume of the whole hippocampus in the elderly

H Kida, S Nakajima, R Shikimoto, R Ochi… - Psychiatry and …, 2020 - Wiley Online Library
Aim Stress‐related disorders and severe stress exposure can cause atrophy of the whole
hippocampus and its subfields. However, the impact of stress coping strategies on the …

Acetaldehyde‐mediated increase in glutamatergic and N‐acetylaspartate neurometabolite levels in the midcingulate cortex of ALDH2*1/*2 heterozygous young …

…, S Nakajima, S Tsugawa, R Ochi… - Alcohol: Clinical and …, 2024 - Wiley Online Library
Background To elucidate the neurobiology underlying alcohol's effect on the human brain,
we examined the acute effects of moderate alcohol administration on levels of glutamatergic …

Disease Progression Patterns of Brain Morphology in Schizophrenia: More Progressed Stages in Treatment Resistance

…, R Tarumi, K Ogyu, S Honda, R Ochi… - Schizophrenia …, 2024 - academic.oup.com
Background and Hypothesis Given the heterogeneity and possible disease progression in
schizophrenia, identifying the neurobiological subtypes and progression patterns in each …

Frontostriatal Structural Connectivity and Striatal Glutamatergic Levels in Treatment-Resistant Schizophrenia: An Integrative Analysis of DTI and 1H-MRS

R Ochi, R Tarumi, Y Noda, S Tsugawa… - Schizophrenia …, 2020 - academic.oup.com
Given that approximately one-third of patients with schizophrenia do not respond to antipsychotics,
different neurobiological bases may underlie treatment resistance in schizophrenia. …