Brainwaves are a bit like the Earths magnetic field lines

It’s amazing to me that the brain also generates magnetic fields outside of our heads.  Perhaps this is what some people call the ‘aura’ of a person but I’ll leave that for another day. Proof of these magnetic fields are evidenced in the use of very sensitive magnetic sensors which are placed on the head, usually by neuroscientists conducting experiments, which pick up electrical wave lengths via the magnetic fields they produce.  Neuroscientists can look at the graph produced by the EEG (electroencephalogram) and make diagnoses like epilepsy or sleep disorders.  Magnetoencephalogram (MEG) headset technology is able to detect magnetism deeper in the brain (without any ill effects on the subject) and can give a more detailed picture of the cognitive processes in different areas in the brain whilst performing different activities.

Magnetoencephalogram (MEG) 3D printed headset developed by Nottingham University.

Richard Bright is an artist using EEG technology in his artwork who gave a talk at London Laser Project (a Leonard initiative) based at Central Saint Martins.

check out China Blue for her EEG interactive sound sculpture

Imagining Blue

Lisa Park also uses EEG in her performance work :