Technical guides
What to know before ordering: the 10-20 system positions, connectors and their compatibility, electrode materials, and how to choose a cap size.
- The international 10-20 system Why two EEGs recorded in two different hospitals can be compared, and what that imposes on the cap you order.
- Connectors and compatibility The question that blocks one order in two. Here is how to know, before ordering, whether a reference will plug into your equipment.
- Electrode materials: gold, Ag/AgCl, tin The choice is not made on price. It is made on the frequency band you record, and on how many times the electrode will be cleaned.
- Choosing an EEG cap size Seven sizes, a colour code, and one measurement to take before ordering. That is all, and it decides the quality of the trace.