Brain-computer interfaces (BCI) promise to be a very important tool for the handicapped people in the near future. A wireless biopotential acquisition system is proposed as a solution for true mobility during non-invasive BCI operation. Special care about noise must be taken in a signal acquisition system for biopotentials. The EEG signal amplitude ranges from a few to dozens of micro-volts and it is very low compared with the interference from mains power. Thus, a good quality signal requires an efficient in…
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