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Pseudo-reversed catch-up saccades during head impulses: a new cerebellar sign

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Funding

This study was supported by the National Research Foundation of Korea (NRF) grant funded by the Ministry of Science and ICT (No. NRF-2021R1F1A1061527).

Author information

Authors and Affiliations

  1. Dizziness Center, Clinical Neuroscience Center, Department of Neurology, Seoul National University College of Medicine, Seoul National University Bundang Hospital, 300 Gumi-dong, Bundang-gu, Seongnam-si, Gyeonggi-do, 463-707, South Korea

    Seonkyung Lee, Yu Jin Koo & Ji-Soo Kim

  2. Research Administration Team, Seoul National University Bundang Hospital, Seongnam, South Korea

    Hyo-Jung Kim

  3. Department of Neurology, Seoul National University College of Medicine, Seoul, South Korea

    Ji-Soo Kim

Authors
  1. Seonkyung Lee
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  2. Yu Jin Koo
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  3. Hyo-Jung Kim
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  4. Ji-Soo Kim
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Contributions

SKL analyzed and interpreted the data and wrote the manuscript. YJK and H-JK analyzed and interpreted the data. JSK conceptualized the study, interpreted the data, and revised the manuscript.

Corresponding author

Correspondence to Ji-Soo Kim.

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Conflicts of interest

No conflicting relationship exists for the authors.

Ethical approval

All experiments followed the tenets of the Declaration of Helsinki and this study was approved by the Institutional Review Board of Seoul National University Bundang Hospital (IRB No. B-2111-721-701).

Informed consent

Written informed consent was obtained from the patient for publication of this case report and any accompanying images.

Supplementary Information

Below is the link to the electronic supplementary material.

Supplementary file1 Video-oculography shows spontaneous nystagmus beating to the left and upward that was suppressed by visual fixation. Horizontal gazes show direction-changing gaze-evoked and rebound nystagmus. (MP4 63004 KB)

Supplementary file2 Horizontal saccades are hypermetric to the right (arrows) and hypometric to the left with saccadic intrusions. (MP4 15487 KB)

Supplementary file3 Video-head impulse tests show hypermetric covert corrective (red arrowhead) and overt back-up saccades (red arrow) during stimulation of the left horizontal semicircular canal and covert corrective saccades (blue arrowhead) during stimulation of the right horizontal canal. (MP4 11208 KB)

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Lee, S., Koo, Y., Kim, HJ. et al. Pseudo-reversed catch-up saccades during head impulses: a new cerebellar sign. J Neurol 269, 5651–5654 (2022). https://doi.org/10.1007/s00415-022-11150-7

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  • DOI: https://doi.org/10.1007/s00415-022-11150-7

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