Question may be posed to Liborio Parrino

Honestly, that is some really, really valuable data. Each subject would also be quite a lot of data. I do not know of any online databases for such a thing, and I would be surprised if there was but why not contact some authors who may have the datasets you need directly? Getting the accelerometer data to go along with it is going to be very, very tough as almost all EEG is done in a lab. The datasets you are looking for are almost certainly only being carried out by private companies and you know how they are with publishing RAW data...you could try contacting them but I'm guessing they won't be very forthcoming unless you can offer them something in return. I suggest starting with ZEO, they went defunct but I bet they have some data that is very similar to what you need.

You might also consider looking for this data in mice as there are a few companies out there which have accelerometers built into their wireless EEG setups and so there will be a greater chance of rodent researchers having both EEG, MEG, EOG, and accelerometer data all in the same subjects.

Well, in fact there are such databases e.g. 

http://www.physionet.org/physiobank/database

unfortunately most of the provided datasets on that  site either lack of the accelerometer data or EEG data respectively. Thats why i asked if there are similar databases. But thanks anyhow.

to my knowledge no such data bases.

Thomas Penzel (Berlin) collected databases on polysomnography in Europe. I suggest writing to him directly asking whether he has some polysomnography combined with actometer data, or can refer you to such a database. Good luck!

I work on the National Sleep Research Resource (NSRR -- https://sleepdata.org/). We have published many large, de-identified sleep databases (EDFs and covariates).

None of our current databases match the specifications laid out above (i.e. missing actigraphy), though we hope to soon post data collected as part of the Multi-Ethnic Study of Atherosclerosis Sleep ancillary study (MESA Sleep -- http://www.mesa-nhlbi.org/). As part of that project, participants (2,000+) wore an actigraphy device for 7 days and went through a single night of full PSG. Most subjects have a single night of concurrent PSG and actigraphy. Combining data from different devices may pose new challenges, but it might be fruitful.

Here's a recent publication that describes the MESA Sleep project: https://www.researchgate.net/publication/268791362_RacialEthnic_Differences_in_Sleep_Disturbances_The_Multi-Ethnic_Study_of_Atherosclerosis_(MESA)

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