Which EMC (electromagnetic compatibility) devices are helpful for the design and modification of electroencephalogram (EEG) machines?

EMC refactoring of EEG equipment revolves around analog front-end and system isolation. Each electrode input channel should be equipped with a dedicated ESD protection diode (e.g., ESD3V3D3B for 3.3V systems), whose low leakage current characteristics are crucial. At the amplifier power input, a π-type filter (ferrite bead + capacitor) can effectively filter out noise from the switching power supply. To reduce crosstalk between channels, signal traces can be shielded or coplanar waveguide structures can be used. Data cable ports connecting the device to a computer or network must use filtered connectors or have common-mode inductors (CML2012 series) and ESD protection arrays added at the ports to prevent interference from entering sensitive EEG circuits through the cables.