Hiroaki Hashimoto

ORCID: 0000-0003-4057-4466
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About
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Research Areas
  • Marine and fisheries research
  • Fish Ecology and Management Studies
  • Ichthyology and Marine Biology
  • EEG and Brain-Computer Interfaces
  • Neural dynamics and brain function
  • Coral and Marine Ecosystems Studies
  • Cephalopods and Marine Biology
  • Fish Biology and Ecology Studies
  • Cerebrospinal fluid and hydrocephalus
  • High-Velocity Impact and Material Behavior
  • Liver Disease Diagnosis and Treatment
  • Traumatic Brain Injury and Neurovascular Disturbances
  • Gallbladder and Bile Duct Disorders
  • Identification and Quantification in Food
  • Vacuum and Plasma Arcs
  • Functional Brain Connectivity Studies
  • Marine Biology and Ecology Research
  • Smart Grid and Power Systems
  • Spinal Dysraphism and Malformations
  • Fatigue and fracture mechanics
  • Hepatitis C virus research
  • Dysphagia Assessment and Management
  • Pediatric Hepatobiliary Diseases and Treatments
  • Aquaculture Nutrition and Growth
  • Neurological disorders and treatments

Hiroshima University
2006-2024

Osaka Women's and Children's Hospital
2023-2024

Osaka University
1961-2024

Center for Neuro-Oncology
2024

Massachusetts General Hospital
2024

Harvard University
2024

Otemae Hospital
2020-2023

Hitachi (Japan)
2009-2022

University of Osijek
2021

Berurando General Hospital
2016-2021

We report detailed normal state measurements of the resistivity, magnetic susceptibility and specific heat high-quality single crystals Sr 2 RuO 4 , only copper-free, layered perovskite superconductor ( T c ≈1 K). It is intriguing that despite its very strong anisotropy (the ratio interlayer to in-plane resistivity exceeds 500) arising from essentially two-dimensional Fermi surface, properties are consistent with a universal description for strongly correlated liquid. Therefore, serves as an...

10.1143/jpsj.66.1405 article EN Journal of the Physical Society of Japan 1997-05-15

Endoscopic ultrasound-guided biliary drainage (EUS-BD) can be carried out by two different approaches: choledochoduodenostomy (CDS) and hepaticogastrostomy (HGS). We compared the efficacy safety of these approaches in malignant distal obstruction (MDBO) patients using a prospective, randomized clinical trial.Patients with after failed endoscopic retrograde cholangiopancreatography were randomly selected for either CDS or HGS. The procedures at nine tertiary centers from September 2013 to...

10.1111/den.13406 article EN Digestive Endoscopy 2019-03-25

Various factors have been reported as risk for chronic subdural hematomas (CSDH) recurrence. However, few studies quantitatively evaluated the impact of CSDH locations and burr hole positions on This study aimed to reveal relation between recurrence holes.Initial single surgeries with a drainage tube April 2005 October 2021 at Otemae Hospital were enrolled. Patients' medical records, volume, computed tomography values (CTV) evaluated. The holes assessed using Montreal Neurological Institute...

10.1016/j.wnsx.2023.100204 article EN cc-by World Neurosurgery X 2023-04-27

Although preoperative diffusion-weighted imaging-Alberta Stroke Program Early Computed Tomography Score (DWI-ASPECTS) is well known as a predictor of outcomes after mechanical thrombectomy (MT) for large-vessel occlusion (LVO), assessment changes in DWI-ASPECT from before to MT rare. Therefore, we clarified the relationship between change DWI-ASPECTS and clinical outcomes. In this retrospective single-center study, enrolled 63 cases anterior LVOs treated with April 2015 March 2022....

10.1016/j.inat.2023.101758 article EN cc-by Interdisciplinary Neurosurgery 2023-03-15

Abstract Introduction Most myelomeningocele (MMC) cases present with ventriculomegaly or hydrocephalus, yet a comprehensive volumetric assessment of MMC intracranial structures is lacking. This study aimed to provide baseline data on structural volumes immediately after birth in infants who underwent repair surgeries (postnatal repair). Methods In this retrospective single-center study, we analyzed 52 undergoing postnatal repair, utilizing head computed tomography scans at for assessment....

10.1007/s00381-024-06444-2 article EN cc-by Child s Nervous System 2024-05-07

To realize a brain–machine interface to assist swallowing, neural signal decoding is indispensable. Eight participants with temporal-lobe intracranial electrode implants for epilepsy were asked swallow during electrocorticogram (ECoG) recording. Raw ECoG signals or certain frequency bands of the power converted into images whose vertical axis was number and horizontal time in milliseconds, which used as training data. These data classified four labels (Rest, Mouth open, Water injection,...

10.1142/s0129065720500562 article EN International Journal of Neural Systems 2020-09-16

A clear understanding of the energy distribution in EDM process is very important for explanation some phenomena which cannot be explained well up to now. In this paper, methods and results measuring energies distributed into tool electrode, workpiece dielectric continuous EDM-sinking are described. The electrode obtained by means temperatures removal amounts workpiece, fluid temperature rise after flowing through discharge gap. It found from experimental that greater than independently...

10.2493/jjspe.62.1141 article EN Journal of the Japan Society for Precision Engineering 1996-01-01

A highly sensitive and specific real-time field-deployable detection technology, based on counterflow air introduction atmospheric pressure chemical ionization, has been developed for a wide range of warfare agents (CWAs) comprising gaseous (two blood agents, three choking agents), volatile (six nerve gases one precursor agent, five blister nonvolatile (three lachrymators, vomiting agents) in air. The approach can afford effective both positive negative ion modes, trap multiple-stage mass...

10.1021/ac500042r article EN Analytical Chemistry 2014-03-28

High gamma band (>50 Hz) activity is a key oscillatory phenomenon of brain activation. However, there has not been non-invasive method established to detect language-related high activity. We used 160-channel whole-head magnetoencephalography (MEG) system equipped with superconducting quantum interference device (SQUID) gradiometers non-invasively investigate neuromagnetic activities during silent reading and verb generation tasks in 15 healthy participants. Individual data were divided into...

10.1038/s41598-017-14452-3 article EN cc-by Scientific Reports 2017-10-23

OBJECTIVE Pediatric hydrocephalus requires evaluation while accounting for growth of the intracranial structures, but information on choroid plexus in children is lacking. This study aimed to create normal curves volume, and lateral ventricles volume. Additionally, authors objectively assess degree caused by hyperplasia (CPH) examine impact surgical procedures. METHODS retrospective analyzed head CT scans pediatric patients with minor trauma treated at Osaka Women’s Children’s Hospital...

10.3171/2023.7.peds23218 article EN Journal of Neurosurgery Pediatrics 2023-09-01

Abstract The number of patients with dysphagia is rapidly increasing due to the ageing population. Therefore, importance objectively assessing swallowing function has received attention. Videofluoroscopy and videoendoscopy are standard clinical examinations for dysphagia, but these techniques not suitable daily use because their invasiveness. Here, we aimed develop a novel, non-invasive method measuring using motion tracking system, Kinect v2 sensor. Five males five females normal...

10.1038/s41598-018-23486-0 article EN cc-by Scientific Reports 2018-03-23

Aim: We aimed to identify the candidates for antiviral therapy, among patients who are hepatitis C virus (HCV) carriers with normal serum aminotransferase (ALT), focused on inhibition of hepatocellular carcinoma (HCC). Methods: Four hundred and sixty‐four HCV ALT 129 persistently (PNALT) platelet (PLT) counts ≥150 000/μL received liver biopsies were enrolled. divided into four groups according their levels (≤30 U/L or 31–40 U/L) PLT (≥150 <150 000/μL). Results: In PNALT, rate progression...

10.1111/j.1872-034x.2007.00217.x article EN Hepatology Research 2007-08-09

A new method enabling sensitive real-time air monitoring of highly reactive chemical warfare agents, namely, mustard gas (HD) and Lewisite 1 (L1), by detecting ions their in-line reaction products instead intact is proposed. The based on corona discharge-initiated atmospheric pressure ionization coupled with ion trap tandem mass spectrometry (MSn) via counterflow introduction. Therefore, it allows for specific detection a broad range airborne compounds. In-line reactions, fragmentations...

10.1021/ac504001e article EN Analytical Chemistry 2015-01-02

Abstract Objective Swallowing is a unique movement due to the indispensable orchestration of voluntary and involuntary movements. The transition from swallowing executed within milliseconds. We hypothesized that underlying neural mechanism would be revealed by high‐frequency cortical activities. Methods Eight epileptic participants fitted with intracranial electrodes over orofacial cortex were asked swallow water bolus oscillatory changes, including high γ band (75–150 Hz) β (13–30 Hz),...

10.1002/acn3.51344 article EN cc-by-nc-nd Annals of Clinical and Translational Neurology 2021-05-05

Abstract Infraslow activity (ISA) and high-frequency (HFA) are key biomarkers for studying epileptic seizures. We aimed to elucidate the relationship between ISA HFA around seizure onset. enrolled seven patients with drug-resistant focal epilepsy who underwent intracranial electrode placement. comparatively analyzed ISA, HFA, ISA-HFA phase-amplitude coupling (PAC) in onset zone (SOZ) or non-SOZ (nSOZ) interictal, preictal, ictal states. recorded 15 were larger states than interictal preictal...

10.1038/s41598-021-96479-1 article EN cc-by Scientific Reports 2021-08-31

Abstract Reproductive behaviours of the rockhopper blenny Andamia tetradactyla were studied on supralittoral reefs Kuchierabu‐jima Island, southern Japan. Territorial males defended mating nests, which situated around crevices between rocks and concentrated in high intertidal zones near vertical limits waves. Females occurred large numbers algal mats wave‐splashed zones, approached nests both rising falling tides during daytime. Courtship displays tides, especially when waves surged sprayed...

10.1111/j.1469-7998.2006.00113.x article EN Journal of Zoology 2006-04-13
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