Silver-silver chloride (Ag-AgCl) electrodes provide accurate and clear transmission of surface biopotentials. Reusable electrodes are permanently connected to robust and pliable leadwires (1 mm OD). The leadwires terminate in standard Touchproof connectors for interfacing to 100C series Biopotential modules or Module Extension Cables. Unshielded electrodes terminate in a single Touchproof connector. Shielded electrodes terminate in two Touchproof connectors, one connects to the Ag-AgCl disk and the other connects to the leadwire shield.
For best signal performance use shielded electrodes (EL254S or EL258S) as recording electrodes and unshielded electrodes (EL254 or EL258) as ground or reference electrodes. For ease of setup for EEG monitoring, use the EL258H for both recording and reference electrodes. When recording from subjects in MRI or x-ray based environments, see BIOPAC MRI Guidelines and use the EL254RT or EL258RT for the recording and reference electrodes. These electrodes employ carbon fiber leadwire for superior radiotranslucent performance.
Use reusable electrodes with:
GEL103conductive adhesive gel
or Electrode Accessories: ADD208 Adhesive collars and electrode gel
Generally, for each Biopotential amplifier module, two EL254S or EL258S and one EL254 or EL258 are required. For radiotranslucent requirements, use three of the EL254RT or EL258RT with each Biopotential module.
These lead electrodes are suitable for most applications (ECG, EEG, EGG, EMG, EOG and ERS recordings). The EL258 is unshielded and the EL258S is shielded. The EL258H is a low-profile version of the EL258 and includes a 2mm center hole for injecting gel after the electrode is attached to the subject. The EL258RT is a radiotranslucent version of the EL258.
CBL201 required for connection to 100A or 100B-series amplifiers.
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