about the PSG Scoring notes

Dir all,

Who can explain what the meaning of "No Intervening period bad EEG" as suggested by the variable 'restan4'?

Thanks,

Jenny

If RESTAN4 = "1: Yes", this indicates more than 30 minutes of the sleep period had either lost or unscorable EEG data. RESTAN2 and RESTAN3 indicate when the recording either started or ended in sleep.

Thanks.

Hi mrueschman,

I have another question about the online EEG filters. What the online cut-off frequency of EEG recording in the SHHS1 dataset? I just know the sampling frequency is 125HZ.

Thanks.

Hello,

The high-pass hardware filters for the instrument were 0.15 Hz for EEG channels. There was no ability to set a high filter (low band pass) at acquisition; signal collection began at the mechanical low filter start-up (0.15 or 0.05) and continued to collect without a frequency cut-off.

Best, Stephanie

Got it. Thanks Stephanie.