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Got it. Thanks Stephanie.
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.
Dir all,
Who can explain what the meaning of "No Intervening period bad EEG" as suggested by the variable 'restan4'?
Thanks,
Jenny
Hi mruschman,
Thanks for your reply. Still a question about TIMES34P. Is it calculated by (Time in stage 3-4 sleep)/( total sleep time) ? The denominator is the time excluding all period of wake?
Thanks mrueschman. Is there any variable about the percentage of deep sleep?
Thanks. I want to find a measure to judge the sleep quality such as is it a restorative sleep or not? There are two variables for sleep efficiency, SLP_EFF and SLPEFFP. Would you please figure out the difference of them for me? Sometimes, there is no SLP_EFF available but SLPEFFP always has a value.
Moreover, for some subjects, the time durations recorded by SPonsetP are much larger than Slplatp. I wonder what's the state for those subjects, resting with eye closed in bed or active not in bed?
Thanks. I got it. Another question, is there any variable to represent the sleep-restorability in the morning?
Thank you very much for your quickly reply. So in SHHS1, does the edf data start to be recorded before (at least not later ) than the light out? There is a latency between the start of recording to light out? Is there a variable representing for this ?
Best
Hello everyone,
I have found a variable 'StOnsetP' in SHHS. It's described as "Sleep onset time" and united as time. However, it has a numerical value instead of a time. This confused me. Who can kindly explain the meaning of its value and its correlation with the variable 'slplatp' (Sleep Latency, unit: min) for me? Thanks a lot.
Best, Jenny