Why do People get Motion Sickness

Balancing what your eyes see with what your ears sense can be tricky when you’re on the move.

A collection of nerves, channels and fluid called the vestibular system inside your ears co-ordinates equilibrium by detecting motion from sensory inputs when moving. When you shift your position, the fluid in your ear also moves, triggering nerve messages that – along with visual information from the eyes-tell the brain what’s going on so it can react.

However, when travelling in a coach or on a boat, for example, the atypical motion experienced by the body can cause an imbalance between what the eyes are seeing (or perhaps what they aren’t seeing) and what the ears are experiencing physically.

Why do People get Motion SicknessThe confusion between the ears, eyes and brain can cause nausea, dizziness and/or vomiting because the brain can detect motion but not necessarily see it.

This can also happen in reverse whereby the eyes may perceive movement visually while none is felt by the vestibular system, providing the brain with conflicting information that can’t be processed quick enough to enable the body to respond and maintain balance.

Read also Motion Sickness-Symptoms and Adult-onset motion sickness rare – but can happen

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