Skip to main content

Advertisement

Log in

Subjective visual vertical imprecision during lateral head tilt in patients with chronic dizziness

  • Research Article
  • Published:
Experimental Brain Research Aims and scope Submit manuscript

Abstract

Most prior studies of the subjective visual vertical (SVV) focus on inaccuracy of subjects’ SVV responses with the head in an upright position. Here we investigated SVV imprecision during lateral head tilt in patients with chronic dizziness compared to healthy controls. Forty-five dizzy patients and 45 healthy controls underwent SVV testing wearing virtual reality (VR) goggles, sitting upright (0°) and during head tilt in the roll plane (± 30°). Ten trials were completed in each of three static head positions. The SVV inaccuracy and SVV imprecision were analyzed and compared between groups, along with systematic errors during head tilt, i.e., A-effect and E-effect (E-effect is a typical SVV response during head tilts of ± 30°). The SVV imprecision was found to be affected by head position (upright/right head tilt/left head tilt, p < 0.001) and underlying dizziness (dizzy patients/healthy controls, p = 0.005). The SVV imprecision during left head tilt was greater in dizzy patients compared to healthy controls (p = 0.04). With right head tilt, there was a trend towards greater SVV imprecision in dizzy patients (p = 0.08). Dizzy patients were more likely to have bilateral (6.7%) or unilateral (22.2%) A-effect during lateral head tilt than healthy controls (bilateral (0%) or unilateral (6.7%) A-effect, p < 0.01). Greater SVV imprecision in chronically dizzy patients during head tilts may be attributable to increased noise of vestibular sensory afferents or disturbances of multisensory integration. Our findings suggest that SVV imprecision may be a useful clinical parameter of underlying dizziness measurable with bedside SVV testing in VR.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3

Similar content being viewed by others

Availability of data and materials

Requests for study data may be addressed to the corresponding author.

Code availability

N/A.

References

Download references

Funding

None.

Author information

Authors and Affiliations

Authors

Contributions

Conceptualization: AW, CHW, YHK, and TPC; methodology: AW, CHW, YHK, and TPC; data collection: CHW and TPC; data analysis: AW, CHW, YHK, and TPC; manuscript drafting and revisions: AW, CHW, YHK, and TPC. All authors have read and agreed to the final version of the manuscript.

Corresponding author

Correspondence to Tzu-Pu Chang.

Ethics declarations

Conflict of interest

None to disclose.

Ethics approval

Ethical approval for this study (REC-109-06) was provided by the Research Ethics Committee of Taichung Tzu Chi Hospital. The study was performed in accordance with the guidelines of the Declaration of Helsinki, and written informed consent was obtained from all subjects prior to participation.

Additional information

Communicated by Francesco Lacquaniti.

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Supplementary Information

Below is the link to the electronic supplementary material.

Supplementary file1 (PDF 179 KB)

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Winnick, A.A., Wang, CH., Ko, YH. et al. Subjective visual vertical imprecision during lateral head tilt in patients with chronic dizziness. Exp Brain Res 240, 199–206 (2022). https://doi.org/10.1007/s00221-021-06247-w

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s00221-021-06247-w

Keywords

Navigation