How to record EEG with IBVA

Please remember - while recording brain waves has a decidedly futuristic sound to it, there are great obstacles to using brain recordings to do any of the myriad things we'd like to do. One of the biggest problems is the skull. Everyone's is a different thickness, and since bone is a great source of impedance this will result in great variability between subjects. Another drawback is that electric signals interfere with each other, meaning that the recording is merely a measure of general electrical activity, not the activation of any neuron or node. This makes it very difficult to locate the site of production for a given wave or waveform. Despite these obstacles, EEGs are useful for a broad range of experimental, diagnostic and therapeutic purposes.

With an IBVA it is very easy to record brainwaves, with a small amount of preparation and equipment. Quickly you will be recording EEG through the forehead from the brain's pre-frontal lobes.

For self-monitoring, with a volunteer or client, firstly use a "steret' alcohol swab to remove grease, sweat or make-up from the area of skin across the middle of the forehead where the surface electrodes will make contact.

Apply 3 new medical electrodes from a sealed pack to the placements inside the IBVA sensor band, and attach the headband to the forehead, closing with the velcro fastening at the posterior of the head.

The three leads from the headland must be placed behind the left ear, and the 'ground' electrode connected to anywhere on the earlobe with the clip.

At the scalp, the electrical signal from the brain is very weak. Any sort of muscular tension will create an electrical signal much larger than the signal you are trying to measure. Always using fresh batteries in IBVA transmitters, new electrodes and sterets will help you to get clean, usable data.

Launch IBVA software on your Apple computer, checking for atmospheric Noise in the device preferences panel indicated by the presence of regular square waves in the Raw Wave panel.