about the PSG Scoring notes

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fengzhenhou +0 points · about 1 year ago

Dir all,

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

Thanks,

Jenny

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mrueschman +1 point · about 1 year ago

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.

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fengzhenhou +0 points · about 1 year ago

Thanks.

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fengzhenhou +0 points · about 1 year ago

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.

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stephaniemarvin +1 point · about 1 year ago

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

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fengzhenhou +0 points · about 1 year ago

Got it. Thanks Stephanie.

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