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Vestibular contributions to linear motion perception

Kobel, Megan J. ; Wagner, Andrew R. ; Merfeld, Daniel M.

Experimental brain research, 2024-02, Vol.242 (2), p.385-402 [Periódico revisado por pares]

Berlin/Heidelberg: Springer Berlin Heidelberg

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  • Título:
    Vestibular contributions to linear motion perception
  • Autor: Kobel, Megan J. ; Wagner, Andrew R. ; Merfeld, Daniel M.
  • Assuntos: Ablation ; Biomedical and Life Sciences ; Biomedicine ; Brain research ; Gravitation ; Humans ; Motion ; Motion detection ; Motion Perception ; Neurology ; Neurosciences ; Otoliths ; Perception ; Research Article ; Translation ; Vestibular system ; Vestibule, Labyrinth
  • É parte de: Experimental brain research, 2024-02, Vol.242 (2), p.385-402
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
    Communicated by Bill J Yates.
    Author contributions All authors contributed to the study conception and design. Data collection was performed by MJK and ARW. Data analysis and the first draft of the manuscript was written by MJK. All authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
  • Descrição: Vestibular contributions to linear motion (i.e., translation) perception mediated by the otoliths have yet to be fully characterized. To quantify the maximal extent that non-vestibular cues can contribute to translation perception, we assessed vestibular perceptual thresholds in two patients with complete bilateral vestibular ablation to compare to our data in 12 young (< 40 years), healthy controls. Vestibular thresholds were assessed for naso-occipital (“ x -translation”), inter-aural (“ y -translation”), and superior-inferior (“ z -translation”) translations in three body orientations (upright, supine, side-lying). Overall, in our patients with bilateral complete vestibular loss, thresholds were elevated ~ 2–45 times relative to healthy controls. No systematic differences in vestibular perceptual thresholds were noted between motions that differed only with respect to their orientation relative to the head (i.e., otoliths) in patients with bilateral vestibular loss. In addition, bilateral loss patients tended to show a larger impairment in the perception of earth-vertical translations (i.e., motion parallel to gravity) relative to earth-horizontal translations, which suggests increased contribution of the vestibular system for earth-vertical motions. However, differences were also noted between the two patients. Finally, with the exception of side-lying x -translations, no consistent effects of body orientation in our bilateral loss patients were seen independent from those resulting from changes in the plane of translation relative to gravity. Overall, our data confirm predominant vestibular contributions to whole-body direction-recognition translation tasks and provide fundamental insights into vestibular contributions to translation motion perception.
  • Editor: Berlin/Heidelberg: Springer Berlin Heidelberg
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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