BioSemi.nl

Thank you for the response. Yes indeed we use multitaper spectral estimation which involves multiplying the data with Slepian sequences to minimize spectral leakage. Any other possible tests we could run with the system to confirm if this is/is not a hardware issue?

Hi, We are using the Biosemi ActiveTwo 128 channel system. When doing the saltwater (one-bucket) test, we notice that there is periodic noise at 2Hz intervals, starting at 6Hz, 8Hz, 10Hz, 14Hz, 16Hz etc (for some reason 12Hz isn't as prominent). We have tried this test in two rooms in two different ...