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Next, you need to inject gel into each electrode site using a syringe with a blunt tip. See the the Obtaining consumables section for gel and syringe recommendations. The aim of this procedure is to achieve good electrical contact between the participant’s scalp and the electrode inside the cap. You can obtain online measures of electrode impedance using the ASAlab software, as detailed on the Running an experiment page, which is highly recommended for efficient cap set up.
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