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  • How Wearable Brain-Imaging Tools Are Gaining Popularity

    Happy 2025, everyone!
    May your year be filled with curiosity, discovery, and a deeper understanding of the amazing organ that powers it all—your brain! 🧠✨

    Introduction

    Portable brain devices, like the EMOTIV headset and the Muse S (see figures below), are transforming how we study the brain. These tools are taking neuroscience out of the lab and into classrooms, homes, and everyday environments. But how do they work, and why are they so promising for the future of research? In this blog, I’ll explore their potential, highlighting examples from recent studies that showcase their versatility and impact.

    Photo from Muse
    Photo from EMOTIV

    What Are Wearable Brain Tools?

    Imagine a device that can measure your brain activity while you sit in your living room, attend a class, or even work on a challenging puzzle. That’s exactly what wearable brain tools like the EMOTIV headset can do! These portable devices use EEG (electroencephalography) to record brain activity by detecting electrical signals through electrodes placed on the scalp. Unlike traditional lab setups with bulky equipment and strict environmental controls, wearable tools are lightweight, wireless, and incredibly user-friendly—sometimes even marketed as “a smartwatch for your brain!”

    One of their biggest advantages is accessibility and portability. These devices not only allow researchers to gain insights into brain activity but are also becoming increasingly available to the general public. For researchers, wearable EEG tools are a leap forward—they enable the collection of high-quality brain data in real-world settings, such as classrooms or homes. This is particularly valuable for studying children or individuals who might find labs intimidating. Moreover, wearable devices are more affordable than conventional lab-based systems, democratizing access to advanced neuroscience research for scientists, educators, and even curious individuals. With these tools, the possibilities for understanding and enhancing brain function are endless.


    Why Are They Gaining Popularity?

    1. Accessibility
      Unlike traditional lab-based systems, wearable brain tools can be used in natural settings like classrooms or homes. They’re easy to use, and with a little bit of practice, anyone can measure their own brain activity.
    2. Portability
      These wearable devices are compact and mobile, unlike the stationary lab-based systems. By making neuroscience research more adaptable, wearable tools open up new opportunities for gathering meaningful data in everyday contexts.
    3. Innovation
      Wearables like the EMOTIV headset are driving innovative studies outside the lab, such as investigating how children’s brainwaves relate to their ability to process numbers.

    A Real-World Example: Children and Number Processing

    The future of brain imaging?

    An example of wearable brain tools in action comes from research conducted by Radboud University and Maastricht University. In this study, we used portable EEG devices to explore how children’s brains process numbers. By measuring brainwaves in a natural setting, we can observe activity in regions associated with numerical reasoning while children performed specific tasks. The results will be available soon and will provide valuable insights into the connection between brain activity and cognitive processes like number recognition and arithmetic skills. For instance, this study highlights differences in how children approach number processing tasks, which could inform tailored educational strategies. Understanding how children’s brains work while they learn can help educators develop interventions to support struggling students or optimize teaching methods for different learning styles. By using wearable tools, studies like this are paving the way for neuroscience to directly improve education, bridging the gap between the lab and the classroom.

    Conclusion

    Wearable brain tools, while revolutionary, do come with limitations. They’re less precise than traditional lab equipment and can be affected by movement or environmental noise in natural settings. However, ongoing advancements are steadily improving their accuracy, portability, and adaptability. In the future, wearable EEG devices could enable personalized cognitive training and tailored learning strategies, bringing neuroscience closer to everyday life and unlocking new possibilities for education and beyond.

    Interested in learning more about how wearable tools are changing neuroscience? Stay tuned for upcoming posts!

    Nienke

    January 8, 2025
    Wearable Brain-Imaging
    Brain, Wearable Brain-Imaging Tools
  • Boosting Your Brain: How Electrical Stimulation Makes You Better At Math

    Imagine if a small zap could improve your math skills! Recent scientific studies suggest that non-invasive brain stimulation, like transcranial electrical stimulation (tES), might do just that. By applying electrical noise over specific brain areas, researchers have found it can enhance learning, especially for those who struggle with solving difficult math problems. This technique may boost brain excitability, helping neurons communicate more efficiently. The result? Better math performance!

    How Does It Work?

    So, how does this all work? tES is a form of brain stimulation that uses low-intensity electrical currents, typically applied through electrodes placed on the scalp, to influence brain activity. Unlike more invasive techniques that require surgery, tES is safe, painless, and can target specific regions, such as those involved in math and working memory. The brain is like an electrical network, and tES helps “tune” its connections, making neurons more responsive and potentially boosting cognitive performance.

    Different Forms of Electrical Brain Stimulation

    There are several techniques used to stimulate the brain, each with unique benefits. tES includes various methods, but here are the most commonly used: the first one is tDCS (transcranial direct current stimulation), which uses a constant low current (1-2 mA) to modulate neuronal activity. tDCS uses either anodal (positive) or cathodal (negative) stimulation. Anodal stimulation increases neuronal excitability, making it easier to fire and enhancing processes like learning and memory. On the other hand, cathodal stimulation reduces excitability, which can be useful for decreasing excitability (i.e., overactive areas). The second technique is tACS (transcranial alternating current stimulation), which applies oscillating currents to influence brain rhythms. Lastly, tRNS (transcranial random noise stimulation), involves random electrical noise to enhance brain excitability and is particularly effective in numerical learning.

    Examples of tDCS (anodal and cathodal), tACS, tRNS as shown in Reed and Cohen Kadosh (2018)

    How Does It Feel?

    Photo from Neuroelectrics

    It is not scary or painful at all! You can feel a mild tingling sensation that usually last a couple of minutes and then disappears. But it is also possible you do not feel anything at all. Sometimes the electrical stimulation has a warming effect, but most of the time the stimulation is barely noticeable.

    Research continues to unravel how electrical brain stimulation can enhance learning, and the results are promising. Who knows… perhaps in the near future, these techniques play an important part in educational and cognitive practices.

    Want to read more about this research? Check the following press release and the associated paper.

    Nienke

    October 25, 2024
    Brain Stimulation
    Brain, Electrical stimulation, Math