Designed by kjpargeter / Freepik

EEGino Pi

EEGino Pi

My colleague Maud PĂ©lissier and I are currently setting-up a simplified, 1-channel wearable EEG system for our linguistic experiments. We want to use it in more realistic contexts outside the lab and for demos in class.

How does it compare to professional gear?

Feature EEGino Pi professional
sample rate (Hz) 1,000 1,000
resolution (bits) 10 24
number of channels up to 4 > 32
pricing € approx. 300 approx. 30,000

With 1 electrode in the occipital region, eyes closed, we get very decent alpha waves (band-pass filtered): alpha waves

Although it is not directly comparable partly because of our imperfect ad-hoc post-sync method, here is the signal recorded at the same location with our pro-grade system with an estimated lag of -300 to 300 ms re the EEGino Pi signal.

alpha waves

Time-frequency representation for the EEGino Pi: scalogram

Corresponding time-frequency plot for the pro EEG: scalogram

From this rather informal visual test, it seems that our prototype is a good substitute for a professional EEG system in cases where spatial resolution and bit depth are not critical.

More info coming soon (hopefully)… stay tuned!

Emmanuel Ferragne
Associate Professor of Phonetics

Phonetician, AI enthusiast, occasional musician, amateur kickboxer.