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Tiltable objective microscope visualizes selectivity for head motion direction and dynamics in zebrafish vestibular system

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  • Masashi Tanimoto

    (National Institute for Basic Biology
    Exploratory Research Center on Life and Living Systems (ExCELLS))

  • Ikuko Watakabe

    (National Institute for Basic Biology
    Exploratory Research Center on Life and Living Systems (ExCELLS))

  • Shin-ichi Higashijima

    (National Institute for Basic Biology
    Exploratory Research Center on Life and Living Systems (ExCELLS))

Abstract

Spatio-temporal information about head orientation and movement is fundamental to the sense of balance and motion. Hair cells (HCs) in otolith organs of the vestibular system transduce linear acceleration, including head tilt and vibration. Here, we build a tiltable objective microscope in which an objective lens and specimen tilt together. With in vivo Ca2+ imaging of all utricular HCs and ganglion neurons during 360° static tilt and vibration in pitch and roll axes, we reveal the direction- and static/dynamic stimulus-selective topographic responses in larval zebrafish. We find that head vibration is preferentially received by striolar HCs, whereas static tilt is preferentially transduced by extrastriolar HCs. Spatially ordered direction preference in HCs is consistent with hair-bundle polarity and is preserved in ganglion neurons through topographic innervation. Together, these results demonstrate topographically organized selectivity for direction and dynamics of head orientation/movement in the vestibular periphery.

Suggested Citation

  • Masashi Tanimoto & Ikuko Watakabe & Shin-ichi Higashijima, 2022. "Tiltable objective microscope visualizes selectivity for head motion direction and dynamics in zebrafish vestibular system," Nature Communications, Nature, vol. 13(1), pages 1-16, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-35190-9
    DOI: 10.1038/s41467-022-35190-9
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    References listed on IDEAS

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    1. Qiuxiang Zhang & Suna Li & Hiu-Tung C. Wong & Xinyi J. He & Alisha Beirl & Ronald S. Petralia & Ya-Xian Wang & Katie S. Kindt, 2018. "Synaptically silent sensory hair cells in zebrafish are recruited after damage," Nature Communications, Nature, vol. 9(1), pages 1-16, December.
    2. Jakob Neef & Nicolai T. Urban & Tzu-Lun Ohn & Thomas Frank & Philippe Jean & Stefan W. Hell & Katrin I. Willig & Tobias Moser, 2018. "Quantitative optical nanophysiology of Ca2+ signaling at inner hair cell active zones," Nature Communications, Nature, vol. 9(1), pages 1-17, December.
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