Researchers have developed a face-mounted electronic tattoo, or “e-tattoo,” to monitor mental workload in high-stress professions, utilizing EEG and EOG technology for brain activity analysis.
Scientists have introduced an innovative solution designed to help individuals in high-pressure work environments monitor their cognitive performance. This new device, known as an electronic tattoo or “e-tattoo,” is applied to the forehead and is intended to track brainwaves and mental workload.
A study published in the journal Device outlines the advantages of e-tattoos as a cost-effective and user-friendly method for assessing mental workload. Dr. Nanshu Lu, the senior author of the research from the University of Texas at Austin, emphasized that mental workload is a critical component in human-in-the-loop systems, significantly affecting cognitive performance and decision-making.
In an email to Fox News Digital, Dr. Lu noted that the motivation behind this device stems from the needs of professionals in high-demand, high-stakes jobs, including pilots, air traffic controllers, doctors, and emergency dispatchers. The technology could also benefit emergency room doctors and operators of robots or drones, enhancing both training and performance.
One of the primary objectives of the study was to develop a method for measuring cognitive fatigue in roles that require intense mental focus. The e-tattoo is designed to be temporarily affixed to the forehead and is notably smaller than existing devices on the market.
The device operates by employing electroencephalogram (EEG) and electrooculogram (EOG) technologies to monitor brain waves and eye movements. Traditional EEG and EOG machines tend to be bulky and expensive; however, the e-tattoo presents a compact and affordable alternative.
Dr. Lu explained, “We propose a wireless forehead EEG and EOG sensor designed to be as thin and conformable to the skin as a temporary tattoo sticker, which is referred to as a forehead e-tattoo.” She further noted that understanding human mental workload is essential in the fields of human-machine interaction and ergonomics due to its direct impact on cognitive performance.
The study involved six participants who were tasked with identifying letters displayed on a screen. The letters appeared one at a time in various locations, and participants were instructed to click a mouse if either the letter or its position matched one shown previously. Each participant completed the task multiple times, with varying levels of difficulty.
The researchers observed that as the tasks increased in complexity, the brainwave patterns detected by the e-tattoo indicated a corresponding rise in mental workload. The device comprises a battery pack, reusable chips, and a disposable sensor, making it both practical and efficient for use in cognitive assessments.
Currently, the e-tattoo exists as a laboratory prototype. Dr. Lu mentioned that further development is necessary before it can be commercialized, including the implementation of real-time mental workload decoding and validation in more realistic settings. The prototype is estimated to cost around $200.
This groundbreaking research highlights the potential for e-tattoos to revolutionize how professionals in high-stress jobs monitor their cognitive health and performance, paving the way for advancements in training and operational efficiency.
According to Fox News, the development of this technology could significantly impact various fields by providing a more accessible means of tracking mental workload and cognitive fatigue.