Hisashi Akiyama

ORCID: 0009-0000-5193-2754
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About
Contact & Profiles
Research Areas
  • Marine Invertebrate Physiology and Ecology
  • Mental Health Research Topics
  • Schizophrenia research and treatment
  • Marine and environmental studies
  • Marine Ecology and Invasive Species
  • Isotope Analysis in Ecology
  • Crustacean biology and ecology
  • Personality Disorders and Psychopathology
  • Functional Brain Connectivity Studies
  • Parasite Biology and Host Interactions
  • Invertebrate Taxonomy and Ecology
  • Classical Antiquity Studies
  • Astro and Planetary Science
  • Gambling Behavior and Treatments
  • Environmental DNA in Biodiversity Studies
  • Atmospheric Ozone and Climate
  • Marine Biology and Ecology Research
  • Cardiac electrophysiology and arrhythmias
  • Leech Biology and Applications
  • Tryptophan and brain disorders
  • Treatment of Major Depression

Hokkaido University
2024-2025

National Museum of Marine Biology and Aquarium
2024

Miwa Hospital
2024

Hokkaido University Hospital
2023

Background Schizophrenia is a complex mental disorder characterized by significant cognitive and neurobiological alterations. Impairments in function eye movement have been known to be promising biomarkers for schizophrenia. However, assessment methods require specialized expertise. To date, data on simplified measurement tools assessing both patients with schizophrenia are lacking. Objective This study aims assess the efficacy of novel tablet-based platform combining measures classifying...

10.2196/56668 article EN cc-by JMIR Mental Health 2024-05-01

We surveyed the spatial and temporal distribution of Japanese sea nettle jellyfish Chrysaora pacifica in Omura Bay, Japan, using an environmental DNA (eDNA) method. In 2018, C. eDNA concentration increased from March–May at all depths. The seasonal pattern was consistent with previous reports based on visual observations along coast. Thus, method might have advantages to follow while being less time-consuming laborious compared traditional methods. concentrations tended reach a maximum near...

10.3800/pbr.14.320 article EN Plankton and Benthos Research 2019-11-24

<sec> <title>BACKGROUND</title> Schizophrenia is a complex mental disorder characterized by significant cognitive and neurobiological alterations. Impairments in function eye movement have been known to be promising biomarkers for schizophrenia. However, assessment methods require specialized expertise. To date, data on simplified measurement tools assessing both patients with schizophrenia are lacking. </sec> <title>OBJECTIVE</title> This study aims assess the efficacy of novel tablet-based...

10.2196/preprints.56668 preprint EN cc-by 2024-01-25

Unidentified hydromedusae were collected from Nagasaki and Okinawa prefectures in western Japan. In the present study, taxonomic investigations, including morphological observations, of unidentified specimens conducted. The had following characteristics: umbrella spherical; without tentacles; margin with nematocyst ring which centripetal, flat, nematocyst-containing bands run meridionally on exumbrella to apex; manubrium large, cruciform base, four perradial corners mouth oral gonads wall....

10.3800/pbr.19.153 article EN Plankton and Benthos Research 2024-08-29

Phylllorhiza punctata von Lendenfeld, 1884 originates from Australia and Coral Triangle, but its occurrence has been reported in the Atlantic Ocean Mediterranean Sea, so it is necessary to better understand geographic range. Two specimens were collected Nagasaki Kagoshima Prefectures, Japan, morphological molecular studies suggest that they are P. . These &amp;#64257;rst records of species possible individuals have transported Japan by Kuroshio Current.

10.15560/20.5.1046 article EN cc-by Check List 2024-09-19

Intervention for social cognition could be key to improving functioning in patients with schizophrenia. A first step towards its clinical implementation involves interviewing about their subjective difficulties as they experience them the real world. The present study focused on subtypes classified by discrepancies between and actual cognitive impairment. total of 131 outpatients schizophrenia 68 healthy controls were included. Objective measurement was performed using a test battery...

10.1038/s41537-024-00515-8 article EN cc-by-nc-nd Schizophrenia 2024-10-29
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