The advantage of wet electrodes is that they have a better signal to noise ratio than dry electrodes, and therefore require simpler layers in the amplifier devices (easy to design and less expensive). Useful for long recordings or protocols that require movement.
![eeg leads eeg leads](https://www.medicaldevicecables.com/photo/pl21216463-separating_eeg_hat_silver_chloride_electrode_20_leads_eeg_electrode_cap_for_eeg_machine.jpg)
Gel viscosity allows it to be used in more dense electrode configurations, but the gel dries over time and it is not recommended for long recordings (i.e.
#Eeg leads skin#
![eeg leads eeg leads](https://www.med-linket.com/uploads/重复性脑电极3.jpg)