Hirokazu Kumazaki

ORCID: 0000-0002-2567-0276
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About
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Research Areas
  • Autism Spectrum Disorder Research
  • Family and Disability Support Research
  • Child Development and Digital Technology
  • Genetics and Neurodevelopmental Disorders
  • Behavioral and Psychological Studies
  • Olfactory and Sensory Function Studies
  • Assistive Technology in Communication and Mobility
  • Biochemical Analysis and Sensing Techniques
  • Obsessive-Compulsive Spectrum Disorders
  • Attention Deficit Hyperactivity Disorder
  • Virology and Viral Diseases
  • Digital Mental Health Interventions
  • Neuroscience and Music Perception
  • Social Robot Interaction and HRI
  • Child Nutrition and Feeding Issues
  • Functional Brain Connectivity Studies
  • Children's Physical and Motor Development
  • Neuroendocrine regulation and behavior
  • Language Development and Disorders
  • Psychiatry, Mental Health, Neuroscience
  • Neural dynamics and brain function
  • Face Recognition and Perception
  • Cerebral Palsy and Movement Disorders
  • Multisensory perception and integration
  • Infant Health and Development

Nagasaki University
2022-2025

Keio University
2012-2024

Kanazawa University
2015-2024

Advanced Telecommunications Research Institute International
2024

Osaka University
2015-2024

University of Fukui
2015-2024

Chiba University
2015-2024

Hamamatsu University School of Medicine
2015-2024

Gifu University
2024

Nagasaki International University
2024

Abstract Background A growing body of anecdotal evidence indicates that the use robots may provide unique opportunities for assisting children with autism spectrum disorders (ASD). However, previous studies investigating effects interventions using on joint attention (JA) in ASD have shown insufficient results. The used these could not turn their eyes, which was a limitation preventing robot from resembling human agent. Methods We compared behavior typical development (TD) during JA...

10.1186/s13229-018-0230-8 article EN cc-by Molecular Autism 2018-09-04

Job interviews are significant barriers for individuals with autism spectrum disorder because these lack good nonverbal communication skills. We developed a job interview training program using an android robot. The robot consists the following three stages: (1) tele-operating and conversing others through robot, (2) face-to-face mock (3) feedback based on exercises participants were randomly assigned to two groups: one group received combined intervention "interview guidance by teachers...

10.1177/1362361319827134 article EN Autism 2019-02-22

Child maltreatment is a major risk factor for psychopathology, including reactive attachment disorder (RAD).To examine whether neural activity during reward processing was altered in children and adolescents with RAD.Sixteen RAD 20 typically developing (TD) individuals performed tasks high low monetary rewards while undergoing functional magnetic resonance imaging.Significantly reduced the caudate nucleus accumbens observed condition group compared TD (P=0.015, family-wise error-corrected...

10.1192/bjpo.bp.115.001586 article EN cc-by-nc-nd BJPsych Open 2015-10-01

Research suggests that many individuals with autism spectrum disorder (ASD) often demonstrate challenges providing appropriate levels of information during conversational interchanges. Considering the preference ASD, and recent rapid technological advances, robotic systems may yield promise in promoting certain aspects conversation interaction such as self-disclosure personal information. In current work, we evaluated disclosures events specific emotional content across two differing...

10.3389/fpsyt.2018.00036 article EN cc-by Frontiers in Psychiatry 2018-02-08

The feasibility and preliminary efficacy of an android robot-mediated mock job interview training in terms both bolstering self-confidence reducing biological levels stress comparison to a psycho-educational approach human was assessed randomized study. Young adults (ages 18 – 25) with autism spectrum disorder (ASD) were participate either our robot system (n=7) or self-paced review materials about job-interviewing skills (n=8). Baseline outcome measurements self-reported...

10.3389/fpsyt.2017.00169 article EN cc-by Frontiers in Psychiatry 2017-09-11

Technological agents could be effective tools to used in interventions for enhancing social orienting some young children with ASD. We examined response bids preschool ASD and typical development (TD) at a very early age (i.e., around 3 years) using prompts presented by technological of various forms human comparisons. Children demonstrated less overall compared TD controls, across or human. They responded more often simple humanoid robot the avatar These results support potential...

10.1007/s10803-018-3841-1 article EN cc-by Journal of Autism and Developmental Disorders 2018-12-03

Recent rapid technological advances have enabled robots to fulfill a variety of human-like functions, leading researchers propose the use such technology for development and subsequent validation interventions individuals with autism spectrum disorder (ASD). Although been proposed as possible therapeutic tools, physical appearances humanoid currently used in therapy these patients are highly varied. Very little is known about how varied designs experienced by ASD. In this study, we...

10.1371/journal.pone.0186581 article EN cc-by PLoS ONE 2017-10-13

Autism is hypothesized to result in a cortical excitatory and inhibitory imbalance driven by interneuron dysfunction, which associated with the generation of gamma oscillations. On other hand, impaired motor control has been widely reported autism. However, no study focused on oscillations during In present study, we investigated motor-related autism using magnetoencephalography. Magnetoencephalographic signals were recorded from 14 right-handed human children (5 female), aged 5–7 years,...

10.1523/jneurosci.1229-18.2018 article EN cc-by Journal of Neuroscience 2018-08-13

Background Children with high autistic traits often exhibit deficits in drawing, an important skill for social adaptability. Machine learning is a powerful technique predictive models from movement data, so drawing processes and product characteristics can be objectively evaluated. This study aimed to assess the potential of evaluating shape using machine predict traits. Method Seventy boys (5.03 ± 0.16) 63 girls (5.06 0.18) general population participated study. Participants were asked draw...

10.1371/journal.pone.0320770 article EN cc-by PLoS ONE 2025-04-09

Atypical responsiveness to olfactory stimuli has been reported as the strongest predictor of social impairment in children with autism spectrum disorders (ASD). However, previous laboratory-based sensory psychophysical studies that have aimed investigate sensitivity ASD produced inconsistent results. The methodology these is limited by several factors, and more sophisticated approaches are required produce consistent results.We measured detection thresholds typical development (TD) using a...

10.1186/s13229-016-0071-2 article EN cc-by Molecular Autism 2016-01-19

Social skills training (SST) is used to help individuals with autism spectrum conditions (ASC) better understand the perspectives of others and social interactions, develop empathy skills, learn how engage socially. However, many ASC cannot easily sustain high motivation concentration during such an intervention when it administered by humans. We developed a program using multiple humanoid robots (STUH), including android robot, that aimed enable become familiar improve their sociability...

10.3389/fpsyt.2023.1168837 article EN cc-by Frontiers in Psychiatry 2023-07-19

Interventions for job interviews targeting the impaired theory of mind observed in individuals with autism spectrum disorders (ASD) are limited. We developed a role-play-based guidance system using an android robot resembling real person. Individuals ASD worked pairs and played dual roles mock interviews. Specifically, one participant acted as interviewee, while other operated interviewer. Eight high-functioning participated this study. After training sessions, participants learned to...

10.3389/fpsyt.2019.00239 article EN cc-by Frontiers in Psychiatry 2019-04-11

Establishing a treatment method for individuals with autism spectrum disorder (ASD) not only to increase their frequency or duration of eye contact but also maintain it after ceasing the intervention, and furthermore generalize across communication partners, is formidable challenge. Android robots, which are type humanoid robot appearances quite similar that humans, expected adapt role training partners face-to-face ASD create easier experiences transferrable humans. To evaluate this...

10.3389/fpsyt.2019.00370 article EN cc-by Frontiers in Psychiatry 2019-06-14

The rapid expansion of online job interviews during the COVID-19 pandemic is expected to continue after has subsided. These are a significant barrier for individuals with autism spectrum disorders (ASD). There little evidence-based training ASD, and development new trainings expected. In an effort facilitate interview skill acquisition we developed group-based program using virtual robot (GOT). GOT, interviewer interviewee projected as robots on screen. Five participants were grouped...

10.3389/fpsyt.2021.704564 article EN cc-by Frontiers in Psychiatry 2022-01-24

The inferior frontal and superior temporal areas in the left hemisphere are crucial for human language processing. In present study, we investigated magnetic mismatch field (MMF) evoked by voice stimuli 3- to 5-year-old typically developing (TD) children with autism spectrum disorder (ASD) using child-customized magnetoencephalography (MEG). ASD exhibited significantly decreased activation gyrus compared TD MMF amplitude. If classified according presence of a speech onset delay (ASD - SOD...

10.1038/s41598-017-17058-x article EN cc-by Scientific Reports 2017-12-01

Childhood maltreatment (CM), including abuse and neglect, is a crucial factor that distorts child development. CM associated with alterations in numerous brain regions, may be hormonal dysregulation. This study aimed to investigate differences secretion patterns of cortisol (CT) oxytocin (OT) among children who experienced CM, living residential care facilities unstable environments. Among 38 maltreated children, 23 (mean age = 12.2 years, SD 3.0) were categorized as “Settled” 15 13.1 2.2)...

10.3389/fpsyt.2015.00173 article EN cc-by Frontiers in Psychiatry 2015-12-11

We conducted a pilot experiment to examine the potential of communication robot for supporting verbal interaction among adolescents with autism spectrum disorders (ASD) and their caregivers. Three teenagers ASD indirectly conversed teacher via desktop humanoid around 40 min on average per day. In this situation, they showed some positive tendencies such as non-echolalic responses talk about problems related human relationships; had not shown before when directly talked in daily life. During...

10.1109/roman.2016.7745215 article EN 2016-08-01
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