Motion Sickness: Why Using Your Phone in a Vehicle Can Cause Dizziness and Nausea

When traveling in a moving vehicle, the body relies on a combination of visual input, vestibular signals from the inner ear, and proprioceptive feedback to maintain balance and spatial orientation. However, when someone is using their phone while seated in a moving car, the constant motion of the vehicle stimulates the vestibular system, which is responsible for detecting movement and position.

The Role of Visual Input in Motion Sickness

Looking down at a phone screen introduces an additional layer of visual stimulation. The moving images and scrolling text create a dynamic visual environment that conflicts with the motion signals coming from the inner ear. This sensory mismatch can overwhelm the vestibular center in the brain, leading to feelings of dizziness and disorientation.

Why Nausea Occurs

The vestibular system is closely linked to the autonomic nervous system, particularly the branch that controls involuntary bodily functions such as digestion. When the vestibular system is overstimulated, it can trigger a response in the gastrointestinal tract, increasing gut motility and resulting in nausea or even vomiting. This reaction is a common symptom of motion sickness and is especially pronounced in individuals who are more sensitive to sensory conflicts.

Effective Strategies to Reduce Symptoms

To minimize discomfort, it's recommended to avoid using mobile devices while in transit. Instead, closing your eyes or focusing on a stable point outside the vehicle can help reduce the conflicting sensory input. Choosing a seat with better ventilation and a clear view of the horizon—such as a window seat—can also significantly improve comfort levels.

In environments where air circulation is poor, symptoms tend to worsen. For those who frequently experience motion sickness, taking preventive measures like using over-the-counter anti-nausea medications or applying a motion sickness patch before travel can be highly effective. These solutions help suppress the overactive signals from the vestibular system and reduce the likelihood of experiencing dizziness or nausea during travel.