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Integration with EEG or IR

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Integration with EEG or IR


Status

In progress.

Specifications
EEG (electroencephalography)

The most important consideration: we must make EEG electrodes that will not have large eddy currents, and heat up. Most EEG electrodes are flat pieces of conductive material, which can support large eddy currents during TMS. One solution, shown below, is to replace a flat design with an "interrupted" design, which cannot support eddy currents. For example:

In this scenario, the electrodes are fine threads or wires radiating out from a central cable that contains all the wire elements. These wires, projecting radially from a point, do not support circular eddy currents, but can still pick up EEG signals perfectly fine.

IR (infrared light) transcranial imaging of the brain

Another idea is to use infrared light to interrogate brain activity in an awake behaving human. There are engineering challenges for integration of such circuits into TMS, especially close to the TMS device where eddy currents could be induced, but we can overcome these...

Fabrication methods

To make the TMS-compatible EEG electrode, take several uncoated wires and heatshrink tubing around them. De-insulate the end, and then splay the component wires apart, in the fan-shaped geometry shown above. Then use as convential electrodes, using conductive gels or sponges to insure good contact with the scalp.

Parts vendors

None yet.

Parts list

None yet.

Instructions for assembly

None yet.

Results of testing device

None yet.



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Created by: admin last modification: Sunday 13 of January, 2008 [15:57:41 UTC] by novuth