Why Do I Get Nauseous on Rides? The Science Behind Motion Sickness Explained

Motion sickness, often known as carsickness, seasickness, or airsickness, is a disorder that causes nausea, vomiting, dizziness, and discomfort when the body is in motion. Motion sickness arises when the brain receives disoriented instructions from the body. This contradicting information causes confusion in the brain, resulting in motion sickness. However, not everyone gets motion sickness. In this article, we’ll look at the senses involved and how motion sickness occurs.

The Two Senses Involved In Motion Sickness

The inner ear uses semicircular canals to maintain balance and detect motion. These canals are filled with fluid and respond to changes in motion and direction. When you move, the fluid in the semicircular canals flows, stimulating microscopic hair cells that send messages to your brain, which allows you to maintain balance and perceive motion properly.

Now, your semicircular canals are not the only cause of this sickness. Your eyes play an equal role by capturing your surroundings through their lenses and transmitting the information to the brain, allowing it to grasp what is going on.

How Does Motion Sickness Occur?

Remember we discussed the brain and how it receives messages from the inner ear canal and the eyes. In the instance of motion sickness, the two senses do not agree. For example, when you’re reading in a moving car, your eyes observe stillness, but your ears perceive movement due to fluid movement in the canals. This causes confusion in the brain.

The brain may produce nausea and other uncomfortable sensations as a way of trying to sort out the lack of clarity. This is its method of telling you that something is wrong and that it is having trouble interpreting the conflicting information it is getting.

Who Is More Likely To Experience Motion Sickness?

As stated before, not everyone gets motion sickness. This is as a result of various factors like:

• Age: Young children and elderly people are more likely to experience motion sickness. For children, their sensory systems are not fully developed or synchronized, which makes them more susceptible to motion sickness. However, in older adults, age-related changes in the inner ear and sensory processing can lead to motion sickness. As people age, their inner ear function might deteriorate, resulting in poor balance and vestibular function.
• Gender: Women are often more prone to motion sickness than men. Hormonal changes, particularly estrogen, can influence susceptibility to motion sickness. According to research, hormonal changes throughout the menstrual cycle, pregnancy, or menopause can affect the severity of motion nausea symptoms in women.
• Pregnancy: Pregnant women may be more sensitive to motion sickness due to hormonal changes during pregnancy.
• Migraines: Those who get migraines frequently also have an increased risk of motion sickness.

Summary

Motion sickness occurs when your brain becomes confused because your eyes and inner ears give conflicting signals. Your eyes may see that you are sitting still, but your inner ears detect motion. This disagreement causes confusion in your brain, resulting in sensations such as nausea or dizziness which are symptoms of motion sickness.