Cap EEG kit 8 channels with 8 wet electrodes

Cap EEG Kit, 8 Channels with Wet Electrodes: Research-Grade EEG Signal Quality

A ready-to-wear EEG cap with 8 Ag/AgCl wet electrodes and 2 ear-clip electrodes, pre-placed on the international 10-20 system. With a little conductive gel, wet electrodes give the lowest impedance and the cleanest, most stable EEG signal, the choice for research and demanding experiments. Plug the cables into your PiEEG device and record.

Why this kit?

• Best signal quality. Ag/AgCl electrodes with conductive gel give low impedance and low noise, well known as the standard for high-quality EEG.
• Stable for long sessions. Gel keeps the contact steady through hair and small movements, so the signal stays clean over long recordings.
• Plug and play. Every electrode ends in a standard 2.54 mm connector that fits PiEEG boards directly.
• Correct positions out of the box. 8 electrodes fixed at 10-20 positions covering the front, centre, sides and back of the head.
• Complete kit. Cap, 8 signal electrodes and both ear clips (reference and bias), all in one box.

Wet or dry electrodes?

Compatible devices

The EEG device and conductive gel are not included. Order them separately.

Electrode positions

Packing list

• 1 x EEG cap, nylon, size L
• 8 x wet Ag/AgCl electrodes, each with a cable and a 2.54 mm connector
• 2 x ear-clip electrodes with 2.54 mm connectors (reference and bias)

Specifications

How to use

1. Put on the cap so the Fp1 and Fp2 electrodes sit on the forehead, just above the eyebrows, and the cap is centred on the head.
2. Apply conductive EEG gel to each electrode so it makes contact with the scalp through the hair.
3. Clip the two ear electrodes onto clean earlobes.
4. Plug the 8 electrode cables into channels 1 to 8 of your PiEEG device, and the ear clips into the reference and bias inputs. Note which position goes to which channel.
5. Power the device from a battery and start the software.
6. Check the signal: blink a few times (big spikes on Fp1 and Fp2), then close your eyes for 10 seconds (alpha rhythm rises on O1 and O2).

Full instructions: Wet EEG cap: how to use it (PDF)

Tips for a clean signal

• Clean the forehead and earlobes with an alcohol wipe before use.
• Use a gel made for EEG. A small amount per electrode is enough; too much can bridge neighbouring electrodes.
• Make sure the ear clips sit firmly: a loose reference makes every channel noisy.
• Sit still and relax the face and jaw while recording.
• After use, rinse the electrodes and cap with warm water to remove the gel, and let them dry fully before storing.

Documentation & Links

• How to use the wet EEG cap (PDF)
• Cap guide and electrodes guide
• How to get a clean EEG signal
• PiEEG documentation · pieeg.com · Community on Discord