Relation between motion sickness susceptibility and vasovagal syncope susceptibility

Area of Science:

• Neuroscience
• Autonomic Nervous System Research
• Human Physiology

Background:

• Motion sickness is prevalent, particularly in children, yet its underlying causes and individual susceptibility factors remain unclear.
• Autonomic nervous system dysfunction is implicated in motion sickness symptoms (e.g., pallor, sweating) and is well-established in vasovagal syncope.
• Understanding shared physiological mechanisms could illuminate the susceptibility of certain individuals to both conditions.

Purpose of the Study:

• To investigate the potential relationship between susceptibility to motion sickness and vasovagal syncope.
• To explore if shared autonomic nervous system pathways contribute to both conditions.

Main Methods:

• A retrospective study analyzing questionnaire data from 899 university students (aged 20.4 ± 2.1 years, 405 males).
• Participants completed surveys assessing their susceptibility to motion sickness and vasovagal syncope/presyncope in both childhood and adulthood.
• Statistical analysis was performed to identify correlations between susceptibility levels.

Main Results:

• Motion sickness susceptibility was reported by 31.1% in childhood and 7.9% in adulthood (p < 0.001).
• Vasovagal syncope susceptibility was 36.4% in childhood and 33.9% in adulthood (not significant).
• A significant association was found between adulthood motion sickness susceptibility and both childhood (p = 0.004) and adulthood (p = 0.005) vasovagal syncope susceptibility.

Conclusions:

• A significant relationship exists between motion sickness and vasovagal syncope susceptibility.
• This correlation suggests a potential common underlying pathophysiological mechanism.
• Further research into this shared mechanism could enhance understanding of both motion sickness and vasovagal syncope.