Brain Ball

This is the Brain Ball, a visualisation I've been working on as part of an EEG project. It shows a top-down view of a (fairly abstract) head, representing frequencies of brain activity as different colours. It's actually running on a Raspberry Pi, doing EEG processing in Python, and then sending the data through a web socket to do the visualisation in HTML using Canvas.

What you see in the video is one of the more remarkable (and earliest!) EEG results: closing your eyes causes a large spike in Alpha wave activity (shown in blue), especially near the rear of the brain.