Car sickness is an all-too-common ailment that plagues nearly half of the global population, with chronic sufferers making up around 12%. Surprisingly, children experience this condition at even higher rates. Despite these alarming statistics, effective treatments remain sparse, leaving many to endure the debilitating effects of nausea, dizziness, and discomfort during travel.
In an exciting development, scientists in China have pioneered an innovative solution to mitigate car sickness, merging neuroscience, Brain-Computer Interface (BCI) technology, artificial intelligence (AI), and mindfulness practices. Their groundbreaking wearable headband interprets electroencephalogram (EEG) signals from the brain and delivers real-time feedback, encouraging individuals to focus their minds on mindfulness techniques while diverting attention from the moving environment.
Yuanqing Li, a professor at South China University of Technology and senior author of the study, emphasizes this innovation’s potential. He remarks, “Our BCI-based attention-shifting method demonstrated notable effectiveness in substantially reducing car sickness symptoms across both short- and long-term trip durations, particularly benefiting those with severe cases, as evidenced by real-world tests on over 100 susceptible participants.”
Understanding the Pathophysiology of Car Sickness
Car sickness manifests as a confusing mix of nausea, vomiting, dizziness, and sweating for millions globally. But what causes these unsettling symptoms, and why do certain individuals suffer more acutely? The vestibular system, nestled in our inner ear, detects motion. Concurrently, our visual and auditory systems gauge this movement. However, discrepancies in signal processing can lead to conflicting messages between these systems, triggering motion sickness.
Despite its prevalence, the neurobiological signatures of car sickness remain inadequately understood, complicating the development of effective interventions. Current medications offer only moderate relief and come with known side effects. This situation underscores the urgent need for non-pharmaceutical alternatives to address the widespread issue of car sickness.
Li points out that attention-shifting methods represent a promising strategy. By directing focus away from the external environment, these techniques can help alleviate the discordance between sensory inputs responsible for motion sickness. Common practices, such as deep breathing or cognitive tasks, provide temporary relief but are challenging to maintain over extended periods.
Most attention-shifting studies to date have occurred in controlled laboratory settings, further highlighting the gap in proven, effective non-pharmaceutical options. To bridge this gap, the research team in Guangzhou embarked on the initial study to unravel the neurobiological signature of car sickness and showcase how their novel device can ease symptoms in real-world scenarios.
A Harmonious Blend of Mindfulness and Science
Mindfulness, particularly through focused breathing, plays a pivotal role in regulating our reactions to external stimuli, allowing individuals to center themselves in the present moment. Mindfulness-Based Cognitive Therapy (MBCT) has gained traction over the past two decades, demonstrating significant improvements in mental health by alleviating symptoms of depression, anxiety, and stress.
Li shares that mindfulness is an ideal complement to their approach. He states, “Mindfulness meditation is a well-established cognitive training method. It can enhance attentional control and regulate one’s response to external stimuli, which aligns well with the needs in managing car sickness.”
The integration of mindfulness with technology materializes through a brain-computer interface. This wireless headband captures EEG signals, processes them in real time via AI, and provides visual feedback to users via devices like computers, tablets, or smartphones.
The team assessed participants’ levels of focus, termed the “mindfulness score,” and conveyed this feedback through dynamically adjusting audiovisual elements, like the intensity of a campfire flame on the screen. This mechanism allows users to recognize when their attention drifts, enabling them to recalibrate their focus back to their breathing promptly.
In this study, over 100 participants suffering from car sickness assessed the device’s efficacy during short (two consecutive 20-minute) and long (two 120-minute) car rides. Notably, over 83% of those using the device reported significant alleviation of their symptoms, with the most profound improvements seen in participants with more severe cases.
The closed-loop neurofeedback design is crucial to its success. In a different cohort, those using a sham system with random audiovisual feedback—unrelated to their EEG data—saw only 76% reporting no relief. This stark contrast supports the premise that the device actively engages with the user’s brain activity, rather than simply providing random distraction.
From a neurobiological standpoint, previous research indicates that beta power, or the amount of brain waves in the beta frequency, serves as a signature of car sickness. Li explains, “In simpler terms, the better people felt, the more this signature normalized, signifying that our BCI doesn’t just relieve symptoms but also modulates the brain activity associated with car sickness, providing physiological proof of its effectiveness.”
Looking Ahead: Future Directions
While promising, the device must undergo further validation. Future studies aim to recruit diverse demographics and assess controlled experiments to examine the effectiveness of various non-meditative attention-shifting methods. Researchers are particularly interested in determining if the device might diminish overall susceptibility to car sickness over time.
However, challenges persist. Li notes, “The main challenges include ensuring the device’s stability and reliability across diverse populations and environments, simplifying user experience, and conducting larger-scale, multi-center clinical trials to meet regulatory standards for medical devices.”
If these hurdles are navigated successfully, the device could profoundly impact the lives of countless individuals affected by car sickness. The portability and smartphone connectivity of the device enhance its accessibility, suggesting that if mass-produced, manufacturing costs could be reduced, making it affordable for a broader audience, including those in low- to middle-income countries.
The aspirations of the research team extend beyond car sickness, with hopes to explore the application of this technology in other types of motion sickness, such as seasickness and cybersickness. Li affirms, “Its core mechanism, alleviating sensory conflict by enhancing endogenous attentional control, theoretically holds potential for these scenarios as well.”
Reference: J. Zhu et al., A Wearable Brain–Computer Interface for Mitigating Car Sickness via Attention Shifting, Advanced Science (2026), DOI: 10.1002/advs.202513040
Featured Image Credit: the authors of 10.1002/advs.202513040