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Drafting Insights: Brain Computer Interfaces

Published Date

Drafting Insights: Brain Computer Interfaces

First let’s take a side-by-side look at the two types of BCI devices.

External BCI device: EEG helmet
Implanted BCI device: Utah Array

External BCI device: EEG helmet
•    Zeto headset FDA approved in 2018
•    Well-established technology for monitoring brain activity

Implanted BCI device: Utah Array
•    4mm x 4mm substrate with 10x10 recording electrode shanks 1.5mm long
•    Cutting-edge technology
•    Gold standard for high-channel microelectrode recording

External BCI device: EEG helmet
•    Spatial Resolution: 3-4cm 
•    Temporal Resolution: 10ms
•    Human Risk: None

Implanted BCI device: Utah Array
•    Spatial Resolution: <0.5mm
•    Temporal Resolution: 1ms
•    Human Risk: Medium


Utah Array: The latest improvement in patient outcomes

•    Array connects to an analog signal cable that connects to the Front-end Board that connects to the digitized signal cable that connects to the Data Acquisition Board that connects to the preprocessed signal cable that connects to the Central Computer. 

Utah Array: The latest improvement in patient outcomes
•    Front-end board
o    1-500uV
    300-7kHz frequency range
o    Amplification 
    30kHz sampling

Utah Array: The latest improvement in patient outcomes

•    Example of broadband 30 kHz LFP data for a co-ripple occurring across two contacts

Utah Array: The latest improvement in patient outcomes
•    Data Acquisition Board
o    Decimation for down sampling
o    Filtering out all signals outside the band of interest


BCI devices enable control and feedback

As this journey continues, look for innovations to continue.

The possibilities are limitless!