Electro-cap for Deymed TruScan
Electro-cap specifically set-up for use with Deymed units. The Deymed style Electro-Caps are an EEG electrode application technique that include leads for short EEG ear clips attached to the cap.
They are made of an elastic spandex-type fabric with recessed, pure tin electrodes attached to the fabric. The electrodes on the standard caps are positioned to the International 10-20 method of electrode placement.
The cap is ordered as a "Custom Cap". We'll need to know which placement the customer prefers for the reference, usually FCZ, CPZ, or POZ. In addition to the 10/20 placements, the cap also has dropped wires for A1 and A2. This cap has two short ear leads that are typically used with the 3 1/2" E5-9S-Drops EEG ear-clips. (E5-9S-Drops not included - short ear leads)
- Extra Small (46-50 cm Green) Part# E1-LEX-S
- Small (50-54 cm Yellow) Part# E1-LEX-S
- Medium (54-58 cm Red) Part# E1-LEX-M
- Large (58-62 cm Blue) Part# E1-LEX-L
- Deymed caps are custom. Call for size if you do not see it here. Takes 10-14 days for delivery. These caps use the short ear leads (E59S-DROPS)
Sizes in age are approximate; the patient should always be measured to determine proper eeg cap size. FCZ is most commonly used reference.
EEG caps for use with Deymed's TruScan32 system: See attached image file. The image is from ECI and shows which electrode sites connect to which physical pin of the connector on the multi-colored ribbon cable of ECI's standard 19-channel cap. Under the support tab it shows which electrode sites connect to which pin # of the connector on the multi-colored ribbon cable of Deymed's standard 19-channel cap.
If you look at the connector , you'll see that the physical pins on the connector are labeled with #s from 1 to 25.
The connections between electrode sites and pins are the same for ECI and Deymed, except that ECI uses AFz for Ground and has no Reference electrode, and Deymed uses AFz for Reference and adds an extra electrode at FCz for the ground: Site Pin# ECI Deymed AFz 9 Ground Reference FCz 13 n/a Ground In order to get a cap from ECI that will work with the Deymed TruScan32, send them the ECI diagram that I've attached, and ask them to make the appropriately-sized cap with the extra electrode at FCz that connects to pin # 13.
Electro-Cap Quick Facts
Use only Ivory or Palmolive liquid detergent for washing your cap. Other soaps and detergents can leave a residue on the electrode surface, causing artifacts and/or impedance problems.
Use only ECI Electro-Gel. Other types of paste and gel can cause artifacts and/or high impedance.
Ensure that all accessory electrodes are the same metal as the electrodes in your cap. All standard ELectro-Caps have tin electrodes. Use of accessory electrodes of a different metal can cause a myriad of problems.
Keep all gel, paste, and moisture away from the connector that plugs into your equipment.