EEG Electrode Types Explained: Disc, Ear Clip & Needle Electrodes

EEG Electrode Types Explained

EEG recording relies on several distinct electrode designs, each suited to different parts of the scalp, different setup speeds, and different levels of reuse. Here's a breakdown of the main types clinics use.

Disc Electrodes

Reusable EEG disc electrodes typically feature a 10mm gold- or silver-plated disc with color-coded, super-flexible leadwires terminating in standard touch proof connectors. They're a standard, reusable option for routine EEG setups and are available with either Teflon or PVC-insulated leadwires depending on your preference. Shop EEG disc electrodes.

Ear Clip Electrodes

Ear clip electrodes are used for reference and ground placement in EEG montages. Reusable ear clips typically consist of two EEG cups in a clip design, available in silver, silver/chloride, or gold-plated surface options depending on the impedance characteristics you need. Shop ear clip electrodes.

Needle Electrodes for EEG

For applications where disc or cup electrodes aren't practical - such as certain surgical monitoring setups - disposable low profile needle electrodes offer a pre-sterilized, single-use alternative with a round tapered point and super-flexible leadwire. Shop low profile needle electrodes.

Reusable vs. Disposable

Reusable disc and ear clip electrodes cost less per use but require cleaning and disinfection between patients per your facility's infection control protocol. Disposable needle electrodes cost more per use but eliminate reprocessing entirely and reduce cross-contamination risk - the same tradeoff that applies to EMG needle electrodes.

Choosing the Right Electrode

The right choice depends on your setup speed requirements, infection control protocol, and the specific montage you're running. If you're not sure which type fits your lab's workflow, call 1-800-323-1771 and we can walk through your options.