Relationship Between Motion Sickness Susceptibility and Vestibular Test Results

Area of Science:

• Neuroscience
• Vestibular System Research

Background:

• Accurate diagnosis of motion sickness is challenging due to the lack of sensitive and specific tests.
• Vestibular system dysfunction is implicated in motion sickness, but direct correlations with diagnostic tests remain unclear.

Purpose of the Study:

• To investigate the correlation between various vestibular function tests and motion sickness susceptibility.
• To evaluate the diagnostic sensitivity of the skull vibration-induced nystagmus test (SVINT) for motion sickness.

Main Methods:

• 44 young adults were assessed using the Motion Sickness Susceptibility Questionnaire-Short Form (MSSQ-SF) and divided into motion sickness and control groups.
• A comprehensive battery of vestibular tests was performed, including ocular and cervical vestibular evoked myogenic potential (oVEMP & cVEMP) tests, SVINT, video head impulse test (vHIT), and oculomotor tests.

Main Results:

• A significant difference was observed only in the n1-p1 amplitudes of the left oVEMP test between the groups (p=0.014).
• No other tested vestibular function parameters showed significant differences between individuals with and without motion sickness susceptibility.

Conclusions:

• No significant relationship was found between motion sickness susceptibility and the results of the evaluated vestibular function tests.
• The SVINT test did not demonstrate diagnostic utility for motion sickness in this cohort.
• This study highlights the complexity of motion sickness and suggests that environmental factors during testing may influence results.