Mika Sakamoto
| Faculty of Health Care and Medical Sports,Department of Rehabilitation,Occupational Therapy Major | Professor |
| Graduate School of Health Sciences,Doctoral Program in Health Sciences | Professor |
| Graduate School of Health Sciences,Master's and Doctoral Programs in Occupational Therapy | Professor |
| Graduate School of Information Sciences,Major of Information Sciences | Professor |
Last Updated :2025/10/18
■Researcher basic information
■Career
Member History
■Research activity information
Paper
- Preliminary experiment for developing quantitative evaluation of eye movements developing infants.
Mika Sakamoto; Nanae Sakakibara; Kotaro Hachiya; Osamu Uba
The Japanese Journal of Rehabilitation Medicine, Dec. 2025, [Reviewed]
Objective: Children with developmental disabilities exhibit poor eye movement more
frequently compared to typically developing children. Their difficulties, such as being
easily distracted and skipping words while reading, are partly due to their poor eye
movement. It is desirable to identify and intervene in these issues before they become
apparent in preschool, but currently, there are no clear indicators for the developmental
process of eye movement. Therefore, we attempted to develop a quantitative
evaluation of eye movement in typically developing children.
Methods: We used a gaze analysis device to measure the eye movements of six older
children using a prototype eye movement stimulus presentation video.
Results: Although lapses in attention were observed during measurement, all six
participants successfully completed the eye movement tasks. For fixation, on
average,80.8% of gaze points were within 3°of the target. For horizontal saccades, all
participants exhibited rapid eye movements to fixate on the target after its presentation.
In the third trial, waveform analysis for all six participants showed quick gaze shifts,
appropriate eye movement amplitude, and maintenance of gaze during target
presentation, confirming saccade proficiency. For horizontal pursuit, the averaged
waveforms of the six participants showed that the standard deviation at each
measurement point was smallest in the third trial out of five.
Conclusion: Maintaining the children's attention during measurements required effort,
and shortening the measurement time was necessary. However, continuous
measurement of saccades and SPEM showed a learning effect. This early-stage
learning effect may be a characteristic of typically developing children in the future. - 療育における作業療法での眼球運動への取り組みの報告
Mar. 2021, [Reviewed]
Lectures, oral presentations, etc.
- A preliminary study toward the development of quantitative evaluation of eye movements in preschool children.
Mika Sakamoto; Nanae Sakakibara; Kotaro Hachiya; Osamu Uba
WFOT congress 2026, 10 Feb. 2026
Introduction Children with developmental disorders often exhibit immature eye movements, which can underlie problematic behaviors. Clinically, eye movement evaluations are observational, lacking standard indicators.
Objective This study aims to present quantitative indicators of eye movements in typically developing children to clarify abnormalities and characteristics.
Methods Stimulus presentation videos were created to induce eye movements and incorporated into the "JVC Kenwood Gazefinder NP-100" eye-tracking device. After obtaining parental consent, the eye movements of six infants were measured. The study was approved by the Ethics Review Committee of Teikyo Heisei University.
Results The six participants (two boys, four girls, aged 5 years 7 months to 6 years 2 months) had their eye movements averaged every 0.02 seconds. The proportion of gaze within 3 degrees from the fixation point was 90.8%. In the latter half of the 10-second measurement, the deviation and standard deviation of gaze position increased. Horizontal saccades showed the smallest standard deviation in the third trial, indicating quick gaze shifts. The average saccade inclusion rate in horizontal pursuit movements was 27.3%. Both horizontal saccades and pursuit movements improved with repetition.
Conclusion The stimulus presentation video revealed difficulties in maintaining infants' attention due to the measurement length. However, repeated measurements showed a learning effect. Early-stage learning effects may be characteristic of typically developing children. Detailed adjustments to the stimulus presentation video, analysis methods, and head position considerations are required. - 眼球運動より発達障害児をスクリーニングする評価方法の開発に向けた予備的実験
Nov. 2023 - ペアレントトレーニングの定着に関わる因子-地域の機関の活用-
Sep. 2017 - ペアレントトレーニングの地域療育現場における実践への発展に向けて-文献レビューからの提案-
Sep. 2016 - ペアレントトレーニングへの参加報告-作業療法士による実践を目指して-
Jul. 2016 - ペアレントトレーニングの実践報告－療育現場での実施に向けてのpilot study
Jun. 2015 - Effects of the model project for specialized therapy of children with developmental disability at day service facilities for children: based on Japanese Sensory Inventory Revised results
Mika Sakamoto; Keiko Narita
Jun. 2014 - 児童デイサービスでの作業療法士の役割-モデル事業を通してみえてきたこと-
Jun. 2013 - activity
45回日本作業療法学会
Jun. 2011 - 認知症のスクリーニング検査の構成要件について－文献のSystemati Review－
Jun. 2011 - アルツハイマー病の重症度と手指巧緻動作との関連性－動作の速さからみた利き手の優位性の変化－
Jun. 2007 - アルツハイマー病の重症度と手指機能に関する研究－簡易上肢機能検査による下位項目の検討を通して－
Jun. 2006 - アルツハイマー型痴呆高齢者の両手動作における利き手・非利き手機能の検討
Sep. 2005 - 平成14年度臨床実習における遂行困難学生の状況
May 2003 - 作業の効果-作業前後の主観的疲労度による検討-
May 2002
Social Contribution Activities
■University education and qualification information
