2023 Fiscal Year Final Research Report
PPPD: diagnostic test batteries and novel treatment strategy based on pathophysiology
Project/Area Number |
21H03084
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Single-year Grants |
Section | 一般 |
Review Section |
Basic Section 56050:Otorhinolaryngology-related
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Research Institution | Niigata University |
Principal Investigator |
Horii Arata 新潟大学, 医歯学系, 教授 (30294060)
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Co-Investigator(Kenkyū-buntansha) |
五十嵐 博中 新潟大学, 脳研究所, 教授 (20231128)
和田森 直 長岡技術科学大学, 工学研究科, 助教 (60303179)
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Project Period (FY) |
2021-04-01 – 2024-03-31
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Keywords | めまい / 視覚 / 体性感覚 / 前庭 / 検査 |
Outline of Final Research Achievements |
In this project I investigated pathophysiology of PPPD through neuroimaging, postural analysis, and hypersensitivity to visual and somatosensory information. The head roll-tilt subjective visual vertical test and gaze stability test after exposure to moving visual stimuli detect the characteristic features of PPPD, that is, somatosensory- and visually-dependent spatial orientation, respectively. Therefore, these tests could be used as diagnostic tools for PPPD. Neuroimaging studies suggest shifts in interactions among visuo-vestibular, sensorimotor, and emotional networks, where visual inputs dominate over vestibular inputs. Postural control also shifts, leading to the stiffening of the lower body. To treat PPPD, we developed sensory substitution methods to fix the sensory reweighting to somatosensory and visual information. Also, we proposed hip rather than strategy for standing in combination with neurofeedback back.
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Free Research Field |
耳鼻咽喉科学
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Academic Significance and Societal Importance of the Research Achievements |
持続性知覚性姿勢誘発めまいは、慢性めまいの約40%を占める高頻度の疾患である。よって、PPPDの病態の解明と新規治療法の開発は、PPPDに悩む多くの患者の福音となる。診断に関して、これまでその多くを問診に頼ってきたが、視覚刺激重心動揺検査や、頭部傾斜自覚的視性垂直位検査など、客観的にPPPDのを捉えることで、その診断がより容易になるこ都に貢献した。また、従来の治療法は病態に沿ったものではなかったため、治療効果の低い患者の存在が問題であった。今回、視覚過敏や体性感覚過敏の修正のための聴覚を用いた感覚代行治療や、股関節戦略を利用した姿勢制御など、治療に関する新たな展開に貢献した。
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