EEG sensors

5 channels: AF3, AF4, T7, T8, Pz

2 references: CMS/DRL references on left mastoid process

New three prong gummy sensor: for better hair penetration on Pz

Sensor material:  Hydrophilic semi-dry polymer

Connectivity

Wireless: Bluetooth Low Energy – Improved radio connectivity, updated antenna with Bluetooth 5 support.

EEG signals

Sampling rate: 128 samples per second per channel

Resolution: 16 bits with 1 LSB = 0.1275μV

Frequency response: 0.5-43Hz, digital notch filters at 50Hz and 60Hz

Filtering: Built in digital 5th order Sinc filter

Dynamic range (input referred): 8400 μV(pp)

Coupling mode: AC coupled

Motion sensors

IMU part:  ICM-20948

Accelerometer: 3-axis +/-8g

Gyroscope: 3-axis +/-2000 dps (converted to 4 normalised quaternions)

Magnetometer: 3-axis +/- 12 gauss

Sampling rate:  32 Hz

Resolution: 16 bits

Power

Battery: Internal Lithium Polymer battery 480mAh

Battery life: Improve battery life up to 20hrs on a single charge.

Detections**

Mental commands: neutral + up to 4 pretrained items per training profile

Performance metrics: Excitement, Engagement, Relaxation, Interest, Stress, Focus

Facial Expressions: Blink, Wink L/R, Surprise, Frown, Smile, Clench

** access subject to license. Raw EEG also available