Unreliable association between self-reported sense of direction and peripheral vestibular function

Area of Science:

• Neuroscience
• Otolaryngology
• Human Vestibular System

Background:

• Peripheral vestibular impairment leads to measurable spatial orientation deficits.
• Questionnaires like the Santa Barbara Sense of Direction Scale (SBSODS) assess subjective spatial skills.
• The link between subjective spatial abilities and objective vestibular function is poorly understood.

Purpose of the Study:

• To investigate the correlation between objective vestibular function and subjective self-assessment of spatial orientation.
• To determine if subjective spatial skills predict objective vestibular deficits.

Main Methods:

• 177 patients with vertigo or balance disorders underwent neuro-otological exams (calorics, vHIT, SVV).
• Patients completed the German version of the SBSODS.
• Correlation and regression analyses were performed between vestibular test results and SBSODS scores.

Main Results:

• No stable correlation was found between objective vestibular function and subjective sense of spatial orientation.
• A multiple linear regression model could not reliably explain the variance in self-reported scores.
• Patient groups with varying self-assessed spatial skills showed no significant differences in objective vestibular function.

Conclusions:

• Self-reported spatial orientation assessment does not robustly correlate with objective peripheral vestibular function.
• Current subjective measures may not accurately reflect underlying vestibular deficits.
• Novel methods are necessary to identify orientation impairments in individuals with vestibular hypofunction.