Published on Oct 19, 2012
Muse, InteraXon's new brainwave-sensing headband, allows you to do more with your mind then ever thought possible. Visit our site for more details at http://www.choosemuse.com.
We've received a lot of questions about the number of sensors Muse has, as well as why the number of sensors is important.
We're answering this question here for you today to help clarify things. We've also updated the wording on our website in our FAQ section -- www.choosemuse.com
Have a question you'd like us to respond to in a future update? Contact us: firstname.lastname@example.org
Q: Your video says Muse has 4 sensors. But your website says that Muse has 7 sensors. Which number is accurate?
A: Muse has 7 sensors, which include a 'ground' and a 'reference'. You may have also seen these sensors referred to in some technical documents as electrodes. These are important for both a great user experience and delivering exceptional data quality.
The reference electrode provides a baseline measurement that every recording is compared to. You can think of it this way: when you measure your height, you measure it relative to the floor. When measuring brainwaves, it's relative to the reference electrode.
What is commonly called the ground electrode is used to cancel noise that is present in all other recordings generated. You can think of it this way: EEG recordings, like many other types of recordings, are susceptible to sources of noise. One way to increase the signal-to-noise ratio (getting rid of that noise), before the data is sent to the host system such as your tablet or PC, is through the ground electrode.
The ground and reference electrodes are crucial to generate full, complete, and flexible data from Muse, as well as providing a more dynamic user experience. When we include the ground and reference in our sensor count, the accurate sensor count for Muse is 7.
These 7 sensors give you full and complete control over your app experience. When our Brain Health System displays real-time feedback it really is a truthful measurement of your brain's current activity and performance
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