| | Filter/preprocessing | Articles |
| | Notch filter for power grid interference (35) | [38, 42, 58, 78, 84, 90, 92, 95, 100, 111–113, 119, 123, 127, 129, 136–141, 144–146, 148, 162, 164, 167, 170, 172, 174, 177] | | Resampling (12) | [39, 40, 78, 83, 93, 96, 101, 128, 131, 138, 146, 177] | | Rereference to common average (28) | [56, 77, 81, 82, 98, 99, 103, 111, 115, 124, 130, 147, 151–154, 158–160, 166, 167, 171, 173, 176–178, 180] | | Interpolation of bad channels (3) | [77, 124, 128] |
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