Electro-Cap (ECI) Standard 10-20 Single Caps

Electro-Caps from ECI (Electro-Cap International) are made of elastic spandex-type fabric and come pre-equipped 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.

Electro-Caps come in different sizes and will fit very large adults to infants. The medium Electro-Cap will fit approximately 65% of all patients over the age of 5. The small cap will fit primarily children from the ages of 2 to 5 years. The extra small cap will fit most children from 9 months to 2 years of age. Sizes in age are approximate; the patient should always be measured to determine the proper cap size.

For smaller sizes to fit babies and newborns, please check our Infa-Caps.

Electro-Caps are used in a variety of different applications including EEG for LTM (Long-Term Monitoring), PSG (Polysomnography), Ambulatory, Telemetry, and even animal research.

One Electro-Cap (ECI) Standard 10-20 Cap (including EEG electrodes) per pack.

Technical Specifications

• Cap Material: Elastic spandex-type fabric
• Size: 34cm - 62cm head circumference
• Electrodes: Recessed, pure tin EEG electrodes (pre-assembled) 
• Applications: for EEG, EEG for LTM, PSG and other EEG applications
• Packaging: 1 x Electro-Cap (ECI) Standard 10-20 Cap (with EEG electrodes) per pack

Application note

1. Connect the Electro-Cap to the electrode board adapter.
2. Place the body harness around the chest and under the armpits of the subject.
3. Fasten the velcro straps together making sure the straps are in front and centered on the chest.
4. Measured the circumference of the head with a special color code tap measure, one inch above the nasion and one inch above the inion. The color-coded tape will indicate the color of the proper cap size.
5. Clip the earclip electrode to the subject’s earlobe.
6. Using a syringe, inject a small amount of Electro-Gel into the disc cavity of the earclip electrodes. Rock the syringe back and forth using moderate pressure. This will abrade the skin and lower the impedance.
7. To ensure proper placement of the electrodes, measure the distance of the nasion and inion to calculate the location of Fpz (10% of the distance between nasion and inion) and mark the location with a marking pen.
8. Measure the circumference of the subject’s head to determine the location of the Fp1 and Fp2 (5% of the circumference left and right of Fpz and mark these locations with a marking pen.
9. Place sponge disks over the Fp1 and Fp2 marks. These will absorb perspiration and reduce motion to the electrodes.
10. Place the Electro-Cap on the subject’s head.
11. Set the Fp1 and Fp2 into the sponge disks on the forehead.
12. Continue to work the Electro-Cap on from front to back until it is tight on the head.
13. Secure the cap straps to the body harness by crisscrossing straps and snapping them into place.
14. Double-check that the straps have been pulled tight and secured. This will reduce movement artefacts during the EEG examination.
15. Work each electrode onto the scalp to move excess hair from beneath the electrode mount. Make sure the Electro-Cap is centered on the head and fits properly.
16. Connect all electrodes to your biosignal amplifier.
17. Fill the syringe with 3-4cc of Electro-Gel.
18. Place two fingers on the electrode holder and with the syringe, inject Electro-Gel while rocking the syringe back and forth using moderate pressure until a small amount of gel comes out of the hole. Wipe off the excess gel from the electrode.
19. Check the impedances and ensure impedances are below 3 kOhms. If the impedance reads above 3 kOhms, the electrode must be refilled and the scalp re-abraded until the impedances improve. If the impedances stay above 3 kOhms, use a Quick Insert electrode which will bypass the electrode on the Electrode Board Adapter.
20. Start the EEG recording.